LCOV - code coverage report
Current view: top level - src/bin/psql - tab-complete.in.c (source / functions) Coverage Total Hit
Test: PostgreSQL 19devel Lines: 28.0 % 2393 669
Test Date: 2026-03-01 16:14:42 Functions: 97.4 % 39 38
Legend: Lines:     hit not hit

            Line data    Source code
       1              : /*
       2              :  * psql - the PostgreSQL interactive terminal
       3              :  *
       4              :  * Copyright (c) 2000-2026, PostgreSQL Global Development Group
       5              :  *
       6              :  * src/bin/psql/tab-complete.in.c
       7              :  *
       8              :  * Note: this will compile and work as-is if SWITCH_CONVERSION_APPLIED
       9              :  * is not defined.  However, the expected usage is that it's first run
      10              :  * through gen_tabcomplete.pl, which will #define that symbol, fill in the
      11              :  * tcpatterns[] array, and convert the else-if chain in match_previous_words()
      12              :  * into a switch.  See comments for match_previous_words() and the header
      13              :  * comment in gen_tabcomplete.pl for more detail.
      14              :  */
      15              : 
      16              : /*----------------------------------------------------------------------
      17              :  * This file implements a somewhat more sophisticated readline "TAB
      18              :  * completion" in psql. It is not intended to be AI, to replace
      19              :  * learning SQL, or to relieve you from thinking about what you're
      20              :  * doing. Also it does not always give you all the syntactically legal
      21              :  * completions, only those that are the most common or the ones that
      22              :  * the programmer felt most like implementing.
      23              :  *
      24              :  * CAVEAT: Tab completion causes queries to be sent to the backend.
      25              :  * The number of tuples returned gets limited, in most default
      26              :  * installations to 1000, but if you still don't like this prospect,
      27              :  * you can turn off tab completion in your ~/.inputrc (or else
      28              :  * ${INPUTRC}) file so:
      29              :  *
      30              :  *   $if psql
      31              :  *   set disable-completion on
      32              :  *   $endif
      33              :  *
      34              :  * See `man 3 readline' or `info readline' for the full details.
      35              :  *
      36              :  * BUGS:
      37              :  * - Quotes, parentheses, and other funny characters are not handled
      38              :  *   all that gracefully.
      39              :  *----------------------------------------------------------------------
      40              :  */
      41              : 
      42              : #include "postgres_fe.h"
      43              : 
      44              : #include "input.h"
      45              : #include "tab-complete.h"
      46              : 
      47              : /* If we don't have this, we might as well forget about the whole thing: */
      48              : #ifdef USE_READLINE
      49              : 
      50              : #include <ctype.h>
      51              : #include <sys/stat.h>
      52              : 
      53              : #include "catalog/pg_am_d.h"
      54              : #include "catalog/pg_class_d.h"
      55              : #include "common.h"
      56              : #include "common/keywords.h"
      57              : #include "libpq-fe.h"
      58              : #include "mb/pg_wchar.h"
      59              : #include "pqexpbuffer.h"
      60              : #include "settings.h"
      61              : #include "stringutils.h"
      62              : 
      63              : /*
      64              :  * Ancient versions of libedit provide filename_completion_function()
      65              :  * instead of rl_filename_completion_function().  Likewise for
      66              :  * [rl_]completion_matches().
      67              :  */
      68              : #ifndef HAVE_RL_FILENAME_COMPLETION_FUNCTION
      69              : #define rl_filename_completion_function filename_completion_function
      70              : #endif
      71              : 
      72              : #ifndef HAVE_RL_COMPLETION_MATCHES
      73              : #define rl_completion_matches completion_matches
      74              : #endif
      75              : 
      76              : /*
      77              :  * Currently we assume that rl_filename_dequoting_function exists if
      78              :  * rl_filename_quoting_function does.  If that proves not to be the case,
      79              :  * we'd need to test for the former, or possibly both, in configure.
      80              :  */
      81              : #ifdef HAVE_RL_FILENAME_QUOTING_FUNCTION
      82              : #define USE_FILENAME_QUOTING_FUNCTIONS 1
      83              : #endif
      84              : 
      85              : /* word break characters */
      86              : #define WORD_BREAKS     "\t\n@><=;|&() "
      87              : 
      88              : /*
      89              :  * Since readline doesn't let us pass any state through to the tab completion
      90              :  * callback, we have to use this global variable to let get_previous_words()
      91              :  * get at the previous lines of the current command.  Ick.
      92              :  */
      93              : PQExpBuffer tab_completion_query_buf = NULL;
      94              : 
      95              : /*
      96              :  * In some situations, the query to find out what names are available to
      97              :  * complete with must vary depending on server version.  We handle this by
      98              :  * storing a list of queries, each tagged with the minimum server version
      99              :  * it will work for.  Each list must be stored in descending server version
     100              :  * order, so that the first satisfactory query is the one to use.
     101              :  *
     102              :  * When the query string is otherwise constant, an array of VersionedQuery
     103              :  * suffices.  Terminate the array with an entry having min_server_version = 0.
     104              :  * That entry's query string can be a query that works in all supported older
     105              :  * server versions, or NULL to give up and do no completion.
     106              :  */
     107              : typedef struct VersionedQuery
     108              : {
     109              :     int         min_server_version;
     110              :     const char *query;
     111              : } VersionedQuery;
     112              : 
     113              : /*
     114              :  * This struct is used to define "schema queries", which are custom-built
     115              :  * to obtain possibly-schema-qualified names of database objects.  There is
     116              :  * enough similarity in the structure that we don't want to repeat it each
     117              :  * time.  So we put the components of each query into this struct and
     118              :  * assemble them with the common boilerplate in _complete_from_query().
     119              :  *
     120              :  * We also use this struct to define queries that use completion_ref_object,
     121              :  * which is some object related to the one(s) we want to get the names of
     122              :  * (for example, the table we want the indexes of).  In that usage the
     123              :  * objects we're completing might not have a schema of their own, but the
     124              :  * reference object almost always does (passed in completion_ref_schema).
     125              :  *
     126              :  * As with VersionedQuery, we can use an array of these if the query details
     127              :  * must vary across versions.
     128              :  */
     129              : typedef struct SchemaQuery
     130              : {
     131              :     /*
     132              :      * If not zero, minimum server version this struct applies to.  If not
     133              :      * zero, there should be a following struct with a smaller minimum server
     134              :      * version; use catname == NULL in the last entry if we should do nothing.
     135              :      */
     136              :     int         min_server_version;
     137              : 
     138              :     /*
     139              :      * Name of catalog or catalogs to be queried, with alias(es), eg.
     140              :      * "pg_catalog.pg_class c".  Note that "pg_namespace n" and/or
     141              :      * "pg_namespace nr" will be added automatically when needed.
     142              :      */
     143              :     const char *catname;
     144              : 
     145              :     /*
     146              :      * Selection condition --- only rows meeting this condition are candidates
     147              :      * to display.  If catname mentions multiple tables, include the necessary
     148              :      * join condition here.  For example, this might look like "c.relkind = "
     149              :      * CppAsString2(RELKIND_RELATION).  Write NULL (not an empty string) if
     150              :      * not needed.
     151              :      */
     152              :     const char *selcondition;
     153              : 
     154              :     /*
     155              :      * Visibility condition --- which rows are visible without schema
     156              :      * qualification?  For example, "pg_catalog.pg_table_is_visible(c.oid)".
     157              :      * NULL if not needed.
     158              :      */
     159              :     const char *viscondition;
     160              : 
     161              :     /*
     162              :      * Namespace --- name of field to join to pg_namespace.oid when there is
     163              :      * schema qualification.  For example, "c.relnamespace".  NULL if we don't
     164              :      * want to join to pg_namespace (then any schema part in the input word
     165              :      * will be ignored).
     166              :      */
     167              :     const char *namespace;
     168              : 
     169              :     /*
     170              :      * Result --- the base object name to return.  For example, "c.relname".
     171              :      */
     172              :     const char *result;
     173              : 
     174              :     /*
     175              :      * In some cases, it's difficult to keep the query from returning the same
     176              :      * object multiple times.  Specify use_distinct to filter out duplicates.
     177              :      */
     178              :     bool        use_distinct;
     179              : 
     180              :     /*
     181              :      * Additional literal strings (usually keywords) to be offered along with
     182              :      * the query results.  Provide a NULL-terminated array of constant
     183              :      * strings, or NULL if none.
     184              :      */
     185              :     const char *const *keywords;
     186              : 
     187              :     /*
     188              :      * If this query uses completion_ref_object/completion_ref_schema,
     189              :      * populate the remaining fields, else leave them NULL.  When using this
     190              :      * capability, catname must include the catalog that defines the
     191              :      * completion_ref_object, and selcondition must include the join condition
     192              :      * that connects it to the result's catalog.
     193              :      *
     194              :      * refname is the field that should be equated to completion_ref_object,
     195              :      * for example "cr.relname".
     196              :      */
     197              :     const char *refname;
     198              : 
     199              :     /*
     200              :      * Visibility condition to use when completion_ref_schema is not set.  For
     201              :      * example, "pg_catalog.pg_table_is_visible(cr.oid)".  NULL if not needed.
     202              :      */
     203              :     const char *refviscondition;
     204              : 
     205              :     /*
     206              :      * Name of field to join to pg_namespace.oid when completion_ref_schema is
     207              :      * set.  For example, "cr.relnamespace".  NULL if we don't want to
     208              :      * consider completion_ref_schema.
     209              :      */
     210              :     const char *refnamespace;
     211              : } SchemaQuery;
     212              : 
     213              : 
     214              : /* Store maximum number of records we want from database queries
     215              :  * (implemented via SELECT ... LIMIT xx).
     216              :  */
     217              : static int  completion_max_records;
     218              : 
     219              : /*
     220              :  * Communication variables set by psql_completion (mostly in COMPLETE_WITH_FOO
     221              :  * macros) and then used by the completion callback functions.  Ugly but there
     222              :  * is no better way.
     223              :  */
     224              : static char completion_last_char;   /* last char of input word */
     225              : static const char *completion_charp;    /* to pass a string */
     226              : static const char *const *completion_charpp;    /* to pass a list of strings */
     227              : static const VersionedQuery *completion_vquery; /* to pass a VersionedQuery */
     228              : static const SchemaQuery *completion_squery;    /* to pass a SchemaQuery */
     229              : static char *completion_ref_object; /* name of reference object */
     230              : static char *completion_ref_schema; /* schema name of reference object */
     231              : static bool completion_case_sensitive;  /* completion is case sensitive */
     232              : static bool completion_verbatim;    /* completion is verbatim */
     233              : static bool completion_force_quote; /* true to force-quote filenames */
     234              : 
     235              : /*
     236              :  * A few macros to ease typing. You can use these to complete the given
     237              :  * string with
     238              :  * 1) The result from a query you pass it. (Perhaps one of those below?)
     239              :  *    We support both simple and versioned queries.
     240              :  * 2) The result from a schema query you pass it.
     241              :  *    We support both simple and versioned schema queries.
     242              :  * 3) The items from a null-pointer-terminated list (with or without
     243              :  *    case-sensitive comparison); if the list is constant you can build it
     244              :  *    with COMPLETE_WITH() or COMPLETE_WITH_CS().  The QUERY_LIST and
     245              :  *    QUERY_PLUS forms combine such literal lists with a query result.
     246              :  * 4) The list of attributes of the given table (possibly schema-qualified).
     247              :  * 5) The list of arguments to the given function (possibly schema-qualified).
     248              :  *
     249              :  * The query is generally expected to return raw SQL identifiers; matching
     250              :  * to what the user typed is done in a quoting-aware fashion.  If what is
     251              :  * returned is not SQL identifiers, use one of the VERBATIM forms, in which
     252              :  * case the query results are matched to the user's text without double-quote
     253              :  * processing (so if quoting is needed, you must provide it in the query
     254              :  * results).
     255              :  */
     256              : #define COMPLETE_WITH_QUERY(query) \
     257              :     COMPLETE_WITH_QUERY_LIST(query, NULL)
     258              : 
     259              : #define COMPLETE_WITH_QUERY_LIST(query, list) \
     260              : do { \
     261              :     completion_charp = query; \
     262              :     completion_charpp = list; \
     263              :     completion_verbatim = false; \
     264              :     matches = rl_completion_matches(text, complete_from_query); \
     265              : } while (0)
     266              : 
     267              : #define COMPLETE_WITH_QUERY_PLUS(query, ...) \
     268              : do { \
     269              :     static const char *const list[] = { __VA_ARGS__, NULL }; \
     270              :     COMPLETE_WITH_QUERY_LIST(query, list); \
     271              : } while (0)
     272              : 
     273              : #define COMPLETE_WITH_QUERY_VERBATIM(query) \
     274              :     COMPLETE_WITH_QUERY_VERBATIM_LIST(query, NULL)
     275              : 
     276              : #define COMPLETE_WITH_QUERY_VERBATIM_LIST(query, list) \
     277              : do { \
     278              :     completion_charp = query; \
     279              :     completion_charpp = list; \
     280              :     completion_verbatim = true; \
     281              :     matches = rl_completion_matches(text, complete_from_query); \
     282              : } while (0)
     283              : 
     284              : #define COMPLETE_WITH_QUERY_VERBATIM_PLUS(query, ...) \
     285              : do { \
     286              :     static const char *const list[] = { __VA_ARGS__, NULL }; \
     287              :     COMPLETE_WITH_QUERY_VERBATIM_LIST(query, list); \
     288              : } while (0)
     289              : 
     290              : #define COMPLETE_WITH_VERSIONED_QUERY(query) \
     291              :     COMPLETE_WITH_VERSIONED_QUERY_LIST(query, NULL)
     292              : 
     293              : #define COMPLETE_WITH_VERSIONED_QUERY_LIST(query, list) \
     294              : do { \
     295              :     completion_vquery = query; \
     296              :     completion_charpp = list; \
     297              :     completion_verbatim = false; \
     298              :     matches = rl_completion_matches(text, complete_from_versioned_query); \
     299              : } while (0)
     300              : 
     301              : #define COMPLETE_WITH_VERSIONED_QUERY_PLUS(query, ...) \
     302              : do { \
     303              :     static const char *const list[] = { __VA_ARGS__, NULL }; \
     304              :     COMPLETE_WITH_VERSIONED_QUERY_LIST(query, list); \
     305              : } while (0)
     306              : 
     307              : #define COMPLETE_WITH_SCHEMA_QUERY(query) \
     308              :     COMPLETE_WITH_SCHEMA_QUERY_LIST(query, NULL)
     309              : 
     310              : #define COMPLETE_WITH_SCHEMA_QUERY_LIST(query, list) \
     311              : do { \
     312              :     completion_squery = &(query); \
     313              :     completion_charpp = list; \
     314              :     completion_verbatim = false; \
     315              :     matches = rl_completion_matches(text, complete_from_schema_query); \
     316              : } while (0)
     317              : 
     318              : #define COMPLETE_WITH_SCHEMA_QUERY_PLUS(query, ...) \
     319              : do { \
     320              :     static const char *const list[] = { __VA_ARGS__, NULL }; \
     321              :     COMPLETE_WITH_SCHEMA_QUERY_LIST(query, list); \
     322              : } while (0)
     323              : 
     324              : #define COMPLETE_WITH_SCHEMA_QUERY_VERBATIM(query) \
     325              : do { \
     326              :     completion_squery = &(query); \
     327              :     completion_charpp = NULL; \
     328              :     completion_verbatim = true; \
     329              :     matches = rl_completion_matches(text, complete_from_schema_query); \
     330              : } while (0)
     331              : 
     332              : #define COMPLETE_WITH_VERSIONED_SCHEMA_QUERY(query) \
     333              :     COMPLETE_WITH_VERSIONED_SCHEMA_QUERY_LIST(query, NULL)
     334              : 
     335              : #define COMPLETE_WITH_VERSIONED_SCHEMA_QUERY_LIST(query, list) \
     336              : do { \
     337              :     completion_squery = query; \
     338              :     completion_charpp = list; \
     339              :     completion_verbatim = false; \
     340              :     matches = rl_completion_matches(text, complete_from_versioned_schema_query); \
     341              : } while (0)
     342              : 
     343              : #define COMPLETE_WITH_VERSIONED_SCHEMA_QUERY_PLUS(query, ...) \
     344              : do { \
     345              :     static const char *const list[] = { __VA_ARGS__, NULL }; \
     346              :     COMPLETE_WITH_VERSIONED_SCHEMA_QUERY_LIST(query, list); \
     347              : } while (0)
     348              : 
     349              : /*
     350              :  * Caution: COMPLETE_WITH_CONST is not for general-purpose use; you probably
     351              :  * want COMPLETE_WITH() with one element, instead.
     352              :  */
     353              : #define COMPLETE_WITH_CONST(cs, con) \
     354              : do { \
     355              :     completion_case_sensitive = (cs); \
     356              :     completion_charp = (con); \
     357              :     matches = rl_completion_matches(text, complete_from_const); \
     358              : } while (0)
     359              : 
     360              : #define COMPLETE_WITH_LIST_INT(cs, list) \
     361              : do { \
     362              :     completion_case_sensitive = (cs); \
     363              :     completion_charpp = (list); \
     364              :     matches = rl_completion_matches(text, complete_from_list); \
     365              : } while (0)
     366              : 
     367              : #define COMPLETE_WITH_LIST(list) COMPLETE_WITH_LIST_INT(false, list)
     368              : #define COMPLETE_WITH_LIST_CS(list) COMPLETE_WITH_LIST_INT(true, list)
     369              : 
     370              : #define COMPLETE_WITH(...) \
     371              : do { \
     372              :     static const char *const list[] = { __VA_ARGS__, NULL }; \
     373              :     COMPLETE_WITH_LIST(list); \
     374              : } while (0)
     375              : 
     376              : #define COMPLETE_WITH_CS(...) \
     377              : do { \
     378              :     static const char *const list[] = { __VA_ARGS__, NULL }; \
     379              :     COMPLETE_WITH_LIST_CS(list); \
     380              : } while (0)
     381              : 
     382              : #define COMPLETE_WITH_ATTR(relation) \
     383              :     COMPLETE_WITH_ATTR_LIST(relation, NULL)
     384              : 
     385              : #define COMPLETE_WITH_ATTR_LIST(relation, list) \
     386              : do { \
     387              :     set_completion_reference(relation); \
     388              :     completion_squery = &(Query_for_list_of_attributes); \
     389              :     completion_charpp = list; \
     390              :     completion_verbatim = false; \
     391              :     matches = rl_completion_matches(text, complete_from_schema_query); \
     392              : } while (0)
     393              : 
     394              : #define COMPLETE_WITH_ATTR_PLUS(relation, ...) \
     395              : do { \
     396              :     static const char *const list[] = { __VA_ARGS__, NULL }; \
     397              :     COMPLETE_WITH_ATTR_LIST(relation, list); \
     398              : } while (0)
     399              : 
     400              : /*
     401              :  * libedit will typically include the literal's leading single quote in
     402              :  * "text", while readline will not.  Adapt our offered strings to fit.
     403              :  * But include a quote if there's not one just before "text", to get the
     404              :  * user off to the right start.
     405              :  */
     406              : #define COMPLETE_WITH_ENUM_VALUE(type) \
     407              : do { \
     408              :     set_completion_reference(type); \
     409              :     if (text[0] == '\'' || \
     410              :         start == 0 || rl_line_buffer[start - 1] != '\'') \
     411              :         completion_squery = &(Query_for_list_of_enum_values_quoted); \
     412              :     else \
     413              :         completion_squery = &(Query_for_list_of_enum_values_unquoted); \
     414              :     completion_charpp = NULL; \
     415              :     completion_verbatim = true; \
     416              :     matches = rl_completion_matches(text, complete_from_schema_query); \
     417              : } while (0)
     418              : 
     419              : /*
     420              :  * Timezone completion is mostly like enum label completion, but we work
     421              :  * a little harder since this is a more common use-case.
     422              :  */
     423              : #define COMPLETE_WITH_TIMEZONE_NAME() \
     424              : do { \
     425              :     static const char *const list[] = { "DEFAULT", NULL }; \
     426              :     if (text[0] == '\'') \
     427              :         completion_charp = Query_for_list_of_timezone_names_quoted_in; \
     428              :     else if (start == 0 || rl_line_buffer[start - 1] != '\'') \
     429              :         completion_charp = Query_for_list_of_timezone_names_quoted_out; \
     430              :     else \
     431              :         completion_charp = Query_for_list_of_timezone_names_unquoted; \
     432              :     completion_charpp = list;                             \
     433              :     completion_verbatim = true; \
     434              :     matches = rl_completion_matches(text, complete_from_query); \
     435              : } while (0)
     436              : 
     437              : #define COMPLETE_WITH_FUNCTION_ARG(function) \
     438              : do { \
     439              :     set_completion_reference(function); \
     440              :     completion_squery = &(Query_for_list_of_arguments); \
     441              :     completion_charpp = NULL; \
     442              :     completion_verbatim = true; \
     443              :     matches = rl_completion_matches(text, complete_from_schema_query); \
     444              : } while (0)
     445              : 
     446              : #define COMPLETE_WITH_FILES_LIST(escape, force_quote, list) \
     447              : do { \
     448              :     completion_charp = escape; \
     449              :     completion_charpp = list; \
     450              :     completion_force_quote = force_quote; \
     451              :     matches = rl_completion_matches(text, complete_from_files); \
     452              : } while (0)
     453              : 
     454              : #define COMPLETE_WITH_FILES(escape, force_quote) \
     455              :     COMPLETE_WITH_FILES_LIST(escape, force_quote, NULL)
     456              : 
     457              : #define COMPLETE_WITH_FILES_PLUS(escape, force_quote, ...) \
     458              : do { \
     459              :     static const char *const list[] = { __VA_ARGS__, NULL }; \
     460              :     COMPLETE_WITH_FILES_LIST(escape, force_quote, list); \
     461              : } while (0)
     462              : 
     463              : #define COMPLETE_WITH_GENERATOR(generator) \
     464              :     matches = rl_completion_matches(text, generator)
     465              : 
     466              : /*
     467              :  * Assembly instructions for schema queries
     468              :  *
     469              :  * Note that toast tables are not included in those queries to avoid
     470              :  * unnecessary bloat in the completions generated.
     471              :  */
     472              : 
     473              : static const SchemaQuery Query_for_constraint_of_table = {
     474              :     .catname = "pg_catalog.pg_constraint con, pg_catalog.pg_class c1",
     475              :     .selcondition = "con.conrelid=c1.oid",
     476              :     .result = "con.conname",
     477              :     .refname = "c1.relname",
     478              :     .refviscondition = "pg_catalog.pg_table_is_visible(c1.oid)",
     479              :     .refnamespace = "c1.relnamespace",
     480              : };
     481              : 
     482              : static const SchemaQuery Query_for_constraint_of_table_not_validated = {
     483              :     .catname = "pg_catalog.pg_constraint con, pg_catalog.pg_class c1",
     484              :     .selcondition = "con.conrelid=c1.oid and not con.convalidated",
     485              :     .result = "con.conname",
     486              :     .refname = "c1.relname",
     487              :     .refviscondition = "pg_catalog.pg_table_is_visible(c1.oid)",
     488              :     .refnamespace = "c1.relnamespace",
     489              : };
     490              : 
     491              : static const SchemaQuery Query_for_constraint_of_type = {
     492              :     .catname = "pg_catalog.pg_constraint con, pg_catalog.pg_type t",
     493              :     .selcondition = "con.contypid=t.oid",
     494              :     .result = "con.conname",
     495              :     .refname = "t.typname",
     496              :     .refviscondition = "pg_catalog.pg_type_is_visible(t.oid)",
     497              :     .refnamespace = "t.typnamespace",
     498              : };
     499              : 
     500              : static const SchemaQuery Query_for_index_of_table = {
     501              :     .catname = "pg_catalog.pg_class c1, pg_catalog.pg_class c2, pg_catalog.pg_index i",
     502              :     .selcondition = "c1.oid=i.indrelid and i.indexrelid=c2.oid",
     503              :     .result = "c2.relname",
     504              :     .refname = "c1.relname",
     505              :     .refviscondition = "pg_catalog.pg_table_is_visible(c1.oid)",
     506              :     .refnamespace = "c1.relnamespace",
     507              : };
     508              : 
     509              : static const SchemaQuery Query_for_unique_index_of_table = {
     510              :     .catname = "pg_catalog.pg_class c1, pg_catalog.pg_class c2, pg_catalog.pg_index i",
     511              :     .selcondition = "c1.oid=i.indrelid and i.indexrelid=c2.oid and i.indisunique",
     512              :     .result = "c2.relname",
     513              :     .refname = "c1.relname",
     514              :     .refviscondition = "pg_catalog.pg_table_is_visible(c1.oid)",
     515              :     .refnamespace = "c1.relnamespace",
     516              : };
     517              : 
     518              : static const SchemaQuery Query_for_list_of_aggregates[] = {
     519              :     {
     520              :         .min_server_version = 110000,
     521              :         .catname = "pg_catalog.pg_proc p",
     522              :         .selcondition = "p.prokind = 'a'",
     523              :         .viscondition = "pg_catalog.pg_function_is_visible(p.oid)",
     524              :         .namespace = "p.pronamespace",
     525              :         .result = "p.proname",
     526              :     },
     527              :     {
     528              :         .catname = "pg_catalog.pg_proc p",
     529              :         .selcondition = "p.proisagg",
     530              :         .viscondition = "pg_catalog.pg_function_is_visible(p.oid)",
     531              :         .namespace = "p.pronamespace",
     532              :         .result = "p.proname",
     533              :     }
     534              : };
     535              : 
     536              : static const SchemaQuery Query_for_list_of_arguments = {
     537              :     .catname = "pg_catalog.pg_proc p",
     538              :     .result = "pg_catalog.oidvectortypes(p.proargtypes)||')'",
     539              :     .refname = "p.proname",
     540              :     .refviscondition = "pg_catalog.pg_function_is_visible(p.oid)",
     541              :     .refnamespace = "p.pronamespace",
     542              : };
     543              : 
     544              : static const SchemaQuery Query_for_list_of_attributes = {
     545              :     .catname = "pg_catalog.pg_attribute a, pg_catalog.pg_class c",
     546              :     .selcondition = "c.oid = a.attrelid and a.attnum > 0 and not a.attisdropped",
     547              :     .result = "a.attname",
     548              :     .refname = "c.relname",
     549              :     .refviscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     550              :     .refnamespace = "c.relnamespace",
     551              : };
     552              : 
     553              : static const SchemaQuery Query_for_list_of_attribute_numbers = {
     554              :     .catname = "pg_catalog.pg_attribute a, pg_catalog.pg_class c",
     555              :     .selcondition = "c.oid = a.attrelid and a.attnum > 0 and not a.attisdropped",
     556              :     .result = "a.attnum::pg_catalog.text",
     557              :     .refname = "c.relname",
     558              :     .refviscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     559              :     .refnamespace = "c.relnamespace",
     560              : };
     561              : 
     562              : static const char *const Keywords_for_list_of_datatypes[] = {
     563              :     "bigint",
     564              :     "boolean",
     565              :     "character",
     566              :     "double precision",
     567              :     "integer",
     568              :     "real",
     569              :     "smallint",
     570              : 
     571              :     /*
     572              :      * Note: currently there's no value in offering the following multiword
     573              :      * type names, because tab completion cannot succeed for them: we can't
     574              :      * disambiguate until somewhere in the second word, at which point we
     575              :      * won't have the first word as context.  ("double precision" does work,
     576              :      * as long as no other type name begins with "double".)  Leave them out to
     577              :      * encourage users to use the PG-specific aliases, which we can complete.
     578              :      */
     579              : #ifdef NOT_USED
     580              :     "bit varying",
     581              :     "character varying",
     582              :     "time with time zone",
     583              :     "time without time zone",
     584              :     "timestamp with time zone",
     585              :     "timestamp without time zone",
     586              : #endif
     587              :     NULL
     588              : };
     589              : 
     590              : static const SchemaQuery Query_for_list_of_datatypes = {
     591              :     .catname = "pg_catalog.pg_type t",
     592              :     /* selcondition --- ignore table rowtypes and array types */
     593              :     .selcondition = "(t.typrelid = 0 "
     594              :     " OR (SELECT c.relkind = " CppAsString2(RELKIND_COMPOSITE_TYPE)
     595              :     "     FROM pg_catalog.pg_class c WHERE c.oid = t.typrelid)) "
     596              :     "AND t.typname !~ '^_'",
     597              :     .viscondition = "pg_catalog.pg_type_is_visible(t.oid)",
     598              :     .namespace = "t.typnamespace",
     599              :     .result = "t.typname",
     600              :     .keywords = Keywords_for_list_of_datatypes,
     601              : };
     602              : 
     603              : static const SchemaQuery Query_for_list_of_composite_datatypes = {
     604              :     .catname = "pg_catalog.pg_type t",
     605              :     /* selcondition --- only get composite types */
     606              :     .selcondition = "(SELECT c.relkind = " CppAsString2(RELKIND_COMPOSITE_TYPE)
     607              :     " FROM pg_catalog.pg_class c WHERE c.oid = t.typrelid) "
     608              :     "AND t.typname !~ '^_'",
     609              :     .viscondition = "pg_catalog.pg_type_is_visible(t.oid)",
     610              :     .namespace = "t.typnamespace",
     611              :     .result = "t.typname",
     612              : };
     613              : 
     614              : static const SchemaQuery Query_for_list_of_domains = {
     615              :     .catname = "pg_catalog.pg_type t",
     616              :     .selcondition = "t.typtype = 'd'",
     617              :     .viscondition = "pg_catalog.pg_type_is_visible(t.oid)",
     618              :     .namespace = "t.typnamespace",
     619              :     .result = "t.typname",
     620              : };
     621              : 
     622              : static const SchemaQuery Query_for_list_of_enum_values_quoted = {
     623              :     .catname = "pg_catalog.pg_enum e, pg_catalog.pg_type t",
     624              :     .selcondition = "t.oid = e.enumtypid",
     625              :     .result = "pg_catalog.quote_literal(enumlabel)",
     626              :     .refname = "t.typname",
     627              :     .refviscondition = "pg_catalog.pg_type_is_visible(t.oid)",
     628              :     .refnamespace = "t.typnamespace",
     629              : };
     630              : 
     631              : static const SchemaQuery Query_for_list_of_enum_values_unquoted = {
     632              :     .catname = "pg_catalog.pg_enum e, pg_catalog.pg_type t",
     633              :     .selcondition = "t.oid = e.enumtypid",
     634              :     .result = "e.enumlabel",
     635              :     .refname = "t.typname",
     636              :     .refviscondition = "pg_catalog.pg_type_is_visible(t.oid)",
     637              :     .refnamespace = "t.typnamespace",
     638              : };
     639              : 
     640              : /* Note: this intentionally accepts aggregates as well as plain functions */
     641              : static const SchemaQuery Query_for_list_of_functions[] = {
     642              :     {
     643              :         .min_server_version = 110000,
     644              :         .catname = "pg_catalog.pg_proc p",
     645              :         .selcondition = "p.prokind != 'p'",
     646              :         .viscondition = "pg_catalog.pg_function_is_visible(p.oid)",
     647              :         .namespace = "p.pronamespace",
     648              :         .result = "p.proname",
     649              :     },
     650              :     {
     651              :         .catname = "pg_catalog.pg_proc p",
     652              :         .viscondition = "pg_catalog.pg_function_is_visible(p.oid)",
     653              :         .namespace = "p.pronamespace",
     654              :         .result = "p.proname",
     655              :     }
     656              : };
     657              : 
     658              : static const SchemaQuery Query_for_list_of_procedures[] = {
     659              :     {
     660              :         .min_server_version = 110000,
     661              :         .catname = "pg_catalog.pg_proc p",
     662              :         .selcondition = "p.prokind = 'p'",
     663              :         .viscondition = "pg_catalog.pg_function_is_visible(p.oid)",
     664              :         .namespace = "p.pronamespace",
     665              :         .result = "p.proname",
     666              :     },
     667              :     {
     668              :         /* not supported in older versions */
     669              :         .catname = NULL,
     670              :     }
     671              : };
     672              : 
     673              : static const SchemaQuery Query_for_list_of_routines = {
     674              :     .catname = "pg_catalog.pg_proc p",
     675              :     .viscondition = "pg_catalog.pg_function_is_visible(p.oid)",
     676              :     .namespace = "p.pronamespace",
     677              :     .result = "p.proname",
     678              : };
     679              : 
     680              : static const SchemaQuery Query_for_list_of_sequences = {
     681              :     .catname = "pg_catalog.pg_class c",
     682              :     .selcondition = "c.relkind IN (" CppAsString2(RELKIND_SEQUENCE) ")",
     683              :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     684              :     .namespace = "c.relnamespace",
     685              :     .result = "c.relname",
     686              : };
     687              : 
     688              : static const SchemaQuery Query_for_list_of_foreign_tables = {
     689              :     .catname = "pg_catalog.pg_class c",
     690              :     .selcondition = "c.relkind IN (" CppAsString2(RELKIND_FOREIGN_TABLE) ")",
     691              :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     692              :     .namespace = "c.relnamespace",
     693              :     .result = "c.relname",
     694              : };
     695              : 
     696              : static const SchemaQuery Query_for_list_of_tables = {
     697              :     .catname = "pg_catalog.pg_class c",
     698              :     .selcondition =
     699              :     "c.relkind IN (" CppAsString2(RELKIND_RELATION) ", "
     700              :     CppAsString2(RELKIND_PARTITIONED_TABLE) ")",
     701              :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     702              :     .namespace = "c.relnamespace",
     703              :     .result = "c.relname",
     704              : };
     705              : 
     706              : static const SchemaQuery Query_for_list_of_partitioned_tables = {
     707              :     .catname = "pg_catalog.pg_class c",
     708              :     .selcondition = "c.relkind IN (" CppAsString2(RELKIND_PARTITIONED_TABLE) ")",
     709              :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     710              :     .namespace = "c.relnamespace",
     711              :     .result = "c.relname",
     712              : };
     713              : 
     714              : static const SchemaQuery Query_for_list_of_tables_for_constraint = {
     715              :     .catname = "pg_catalog.pg_class c, pg_catalog.pg_constraint con",
     716              :     .selcondition = "c.oid=con.conrelid and c.relkind IN ("
     717              :     CppAsString2(RELKIND_RELATION) ", "
     718              :     CppAsString2(RELKIND_PARTITIONED_TABLE) ")",
     719              :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     720              :     .namespace = "c.relnamespace",
     721              :     .result = "c.relname",
     722              :     .use_distinct = true,
     723              :     .refname = "con.conname",
     724              : };
     725              : 
     726              : static const SchemaQuery Query_for_list_of_tables_for_policy = {
     727              :     .catname = "pg_catalog.pg_class c, pg_catalog.pg_policy p",
     728              :     .selcondition = "c.oid=p.polrelid",
     729              :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     730              :     .namespace = "c.relnamespace",
     731              :     .result = "c.relname",
     732              :     .use_distinct = true,
     733              :     .refname = "p.polname",
     734              : };
     735              : 
     736              : static const SchemaQuery Query_for_list_of_tables_for_rule = {
     737              :     .catname = "pg_catalog.pg_class c, pg_catalog.pg_rewrite r",
     738              :     .selcondition = "c.oid=r.ev_class",
     739              :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     740              :     .namespace = "c.relnamespace",
     741              :     .result = "c.relname",
     742              :     .use_distinct = true,
     743              :     .refname = "r.rulename",
     744              : };
     745              : 
     746              : static const SchemaQuery Query_for_list_of_tables_for_trigger = {
     747              :     .catname = "pg_catalog.pg_class c, pg_catalog.pg_trigger t",
     748              :     .selcondition = "c.oid=t.tgrelid",
     749              :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     750              :     .namespace = "c.relnamespace",
     751              :     .result = "c.relname",
     752              :     .use_distinct = true,
     753              :     .refname = "t.tgname",
     754              : };
     755              : 
     756              : static const SchemaQuery Query_for_list_of_ts_configurations = {
     757              :     .catname = "pg_catalog.pg_ts_config c",
     758              :     .viscondition = "pg_catalog.pg_ts_config_is_visible(c.oid)",
     759              :     .namespace = "c.cfgnamespace",
     760              :     .result = "c.cfgname",
     761              : };
     762              : 
     763              : static const SchemaQuery Query_for_list_of_ts_dictionaries = {
     764              :     .catname = "pg_catalog.pg_ts_dict d",
     765              :     .viscondition = "pg_catalog.pg_ts_dict_is_visible(d.oid)",
     766              :     .namespace = "d.dictnamespace",
     767              :     .result = "d.dictname",
     768              : };
     769              : 
     770              : static const SchemaQuery Query_for_list_of_ts_parsers = {
     771              :     .catname = "pg_catalog.pg_ts_parser p",
     772              :     .viscondition = "pg_catalog.pg_ts_parser_is_visible(p.oid)",
     773              :     .namespace = "p.prsnamespace",
     774              :     .result = "p.prsname",
     775              : };
     776              : 
     777              : static const SchemaQuery Query_for_list_of_ts_templates = {
     778              :     .catname = "pg_catalog.pg_ts_template t",
     779              :     .viscondition = "pg_catalog.pg_ts_template_is_visible(t.oid)",
     780              :     .namespace = "t.tmplnamespace",
     781              :     .result = "t.tmplname",
     782              : };
     783              : 
     784              : static const SchemaQuery Query_for_list_of_views = {
     785              :     .catname = "pg_catalog.pg_class c",
     786              :     .selcondition = "c.relkind IN (" CppAsString2(RELKIND_VIEW) ")",
     787              :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     788              :     .namespace = "c.relnamespace",
     789              :     .result = "c.relname",
     790              : };
     791              : 
     792              : static const SchemaQuery Query_for_list_of_matviews = {
     793              :     .catname = "pg_catalog.pg_class c",
     794              :     .selcondition = "c.relkind IN (" CppAsString2(RELKIND_MATVIEW) ")",
     795              :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     796              :     .namespace = "c.relnamespace",
     797              :     .result = "c.relname",
     798              : };
     799              : 
     800              : static const SchemaQuery Query_for_list_of_indexes = {
     801              :     .catname = "pg_catalog.pg_class c",
     802              :     .selcondition =
     803              :     "c.relkind IN (" CppAsString2(RELKIND_INDEX) ", "
     804              :     CppAsString2(RELKIND_PARTITIONED_INDEX) ")",
     805              :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     806              :     .namespace = "c.relnamespace",
     807              :     .result = "c.relname",
     808              : };
     809              : 
     810              : static const SchemaQuery Query_for_list_of_partitioned_indexes = {
     811              :     .catname = "pg_catalog.pg_class c",
     812              :     .selcondition = "c.relkind = " CppAsString2(RELKIND_PARTITIONED_INDEX),
     813              :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     814              :     .namespace = "c.relnamespace",
     815              :     .result = "c.relname",
     816              : };
     817              : 
     818              : 
     819              : /* All relations */
     820              : static const SchemaQuery Query_for_list_of_relations = {
     821              :     .catname = "pg_catalog.pg_class c",
     822              :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     823              :     .namespace = "c.relnamespace",
     824              :     .result = "c.relname",
     825              : };
     826              : 
     827              : /* partitioned relations */
     828              : static const SchemaQuery Query_for_list_of_partitioned_relations = {
     829              :     .catname = "pg_catalog.pg_class c",
     830              :     .selcondition = "c.relkind IN (" CppAsString2(RELKIND_PARTITIONED_TABLE)
     831              :     ", " CppAsString2(RELKIND_PARTITIONED_INDEX) ")",
     832              :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     833              :     .namespace = "c.relnamespace",
     834              :     .result = "c.relname",
     835              : };
     836              : 
     837              : static const SchemaQuery Query_for_list_of_operator_families = {
     838              :     .catname = "pg_catalog.pg_opfamily c",
     839              :     .viscondition = "pg_catalog.pg_opfamily_is_visible(c.oid)",
     840              :     .namespace = "c.opfnamespace",
     841              :     .result = "c.opfname",
     842              : };
     843              : 
     844              : /* Relations supporting INSERT, UPDATE or DELETE */
     845              : static const SchemaQuery Query_for_list_of_updatables = {
     846              :     .catname = "pg_catalog.pg_class c",
     847              :     .selcondition =
     848              :     "c.relkind IN (" CppAsString2(RELKIND_RELATION) ", "
     849              :     CppAsString2(RELKIND_FOREIGN_TABLE) ", "
     850              :     CppAsString2(RELKIND_VIEW) ", "
     851              :     CppAsString2(RELKIND_PARTITIONED_TABLE) ")",
     852              :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     853              :     .namespace = "c.relnamespace",
     854              :     .result = "c.relname",
     855              : };
     856              : 
     857              : /* Relations supporting MERGE */
     858              : static const SchemaQuery Query_for_list_of_mergetargets = {
     859              :     .catname = "pg_catalog.pg_class c",
     860              :     .selcondition =
     861              :     "c.relkind IN (" CppAsString2(RELKIND_RELATION) ", "
     862              :     CppAsString2(RELKIND_VIEW) ", "
     863              :     CppAsString2(RELKIND_PARTITIONED_TABLE) ") ",
     864              :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     865              :     .namespace = "c.relnamespace",
     866              :     .result = "c.relname",
     867              : };
     868              : 
     869              : /* Relations supporting SELECT */
     870              : static const SchemaQuery Query_for_list_of_selectables = {
     871              :     .catname = "pg_catalog.pg_class c",
     872              :     .selcondition =
     873              :     "c.relkind IN (" CppAsString2(RELKIND_RELATION) ", "
     874              :     CppAsString2(RELKIND_SEQUENCE) ", "
     875              :     CppAsString2(RELKIND_VIEW) ", "
     876              :     CppAsString2(RELKIND_MATVIEW) ", "
     877              :     CppAsString2(RELKIND_FOREIGN_TABLE) ", "
     878              :     CppAsString2(RELKIND_PARTITIONED_TABLE) ")",
     879              :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     880              :     .namespace = "c.relnamespace",
     881              :     .result = "c.relname",
     882              : };
     883              : 
     884              : /* Relations supporting TRUNCATE */
     885              : static const SchemaQuery Query_for_list_of_truncatables = {
     886              :     .catname = "pg_catalog.pg_class c",
     887              :     .selcondition =
     888              :     "c.relkind IN (" CppAsString2(RELKIND_RELATION) ", "
     889              :     CppAsString2(RELKIND_FOREIGN_TABLE) ", "
     890              :     CppAsString2(RELKIND_PARTITIONED_TABLE) ")",
     891              :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     892              :     .namespace = "c.relnamespace",
     893              :     .result = "c.relname",
     894              : };
     895              : 
     896              : /* Relations supporting GRANT are currently same as those supporting SELECT */
     897              : #define Query_for_list_of_grantables Query_for_list_of_selectables
     898              : 
     899              : /* Relations supporting ANALYZE */
     900              : static const SchemaQuery Query_for_list_of_analyzables = {
     901              :     .catname = "pg_catalog.pg_class c",
     902              :     .selcondition =
     903              :     "c.relkind IN (" CppAsString2(RELKIND_RELATION) ", "
     904              :     CppAsString2(RELKIND_PARTITIONED_TABLE) ", "
     905              :     CppAsString2(RELKIND_MATVIEW) ", "
     906              :     CppAsString2(RELKIND_FOREIGN_TABLE) ")",
     907              :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     908              :     .namespace = "c.relnamespace",
     909              :     .result = "c.relname",
     910              : };
     911              : 
     912              : /*
     913              :  * Relations supporting COPY TO/FROM are currently almost the same as
     914              :  * those supporting ANALYZE. Although views with INSTEAD OF INSERT triggers
     915              :  * can be used with COPY FROM, they are rarely used for this purpose,
     916              :  * so plain views are intentionally excluded from this tab completion.
     917              :  */
     918              : #define Query_for_list_of_tables_for_copy Query_for_list_of_analyzables
     919              : 
     920              : /* Relations supporting index creation */
     921              : static const SchemaQuery Query_for_list_of_indexables = {
     922              :     .catname = "pg_catalog.pg_class c",
     923              :     .selcondition =
     924              :     "c.relkind IN (" CppAsString2(RELKIND_RELATION) ", "
     925              :     CppAsString2(RELKIND_PARTITIONED_TABLE) ", "
     926              :     CppAsString2(RELKIND_MATVIEW) ")",
     927              :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     928              :     .namespace = "c.relnamespace",
     929              :     .result = "c.relname",
     930              : };
     931              : 
     932              : /*
     933              :  * Relations supporting VACUUM are currently same as those supporting
     934              :  * indexing.
     935              :  */
     936              : #define Query_for_list_of_vacuumables Query_for_list_of_indexables
     937              : 
     938              : /* Relations supporting CLUSTER */
     939              : static const SchemaQuery Query_for_list_of_clusterables = {
     940              :     .catname = "pg_catalog.pg_class c",
     941              :     .selcondition =
     942              :     "c.relkind IN (" CppAsString2(RELKIND_RELATION) ", "
     943              :     CppAsString2(RELKIND_PARTITIONED_TABLE) ", "
     944              :     CppAsString2(RELKIND_MATVIEW) ")",
     945              :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     946              :     .namespace = "c.relnamespace",
     947              :     .result = "c.relname",
     948              : };
     949              : 
     950              : static const SchemaQuery Query_for_list_of_constraints_with_schema = {
     951              :     .catname = "pg_catalog.pg_constraint c",
     952              :     .selcondition = "c.conrelid <> 0",
     953              :     .namespace = "c.connamespace",
     954              :     .result = "c.conname",
     955              : };
     956              : 
     957              : static const SchemaQuery Query_for_list_of_statistics = {
     958              :     .catname = "pg_catalog.pg_statistic_ext s",
     959              :     .viscondition = "pg_catalog.pg_statistics_obj_is_visible(s.oid)",
     960              :     .namespace = "s.stxnamespace",
     961              :     .result = "s.stxname",
     962              : };
     963              : 
     964              : static const SchemaQuery Query_for_list_of_collations = {
     965              :     .catname = "pg_catalog.pg_collation c",
     966              :     .selcondition = "c.collencoding IN (-1, pg_catalog.pg_char_to_encoding(pg_catalog.getdatabaseencoding()))",
     967              :     .viscondition = "pg_catalog.pg_collation_is_visible(c.oid)",
     968              :     .namespace = "c.collnamespace",
     969              :     .result = "c.collname",
     970              : };
     971              : 
     972              : static const SchemaQuery Query_for_partition_of_table = {
     973              :     .catname = "pg_catalog.pg_class c1, pg_catalog.pg_class c2, pg_catalog.pg_inherits i",
     974              :     .selcondition = "c1.oid=i.inhparent and i.inhrelid=c2.oid and c2.relispartition",
     975              :     .viscondition = "pg_catalog.pg_table_is_visible(c2.oid)",
     976              :     .namespace = "c2.relnamespace",
     977              :     .result = "c2.relname",
     978              :     .refname = "c1.relname",
     979              :     .refviscondition = "pg_catalog.pg_table_is_visible(c1.oid)",
     980              :     .refnamespace = "c1.relnamespace",
     981              : };
     982              : 
     983              : static const SchemaQuery Query_for_rule_of_table = {
     984              :     .catname = "pg_catalog.pg_rewrite r, pg_catalog.pg_class c1",
     985              :     .selcondition = "r.ev_class=c1.oid",
     986              :     .result = "r.rulename",
     987              :     .refname = "c1.relname",
     988              :     .refviscondition = "pg_catalog.pg_table_is_visible(c1.oid)",
     989              :     .refnamespace = "c1.relnamespace",
     990              : };
     991              : 
     992              : static const SchemaQuery Query_for_trigger_of_table = {
     993              :     .catname = "pg_catalog.pg_trigger t, pg_catalog.pg_class c1",
     994              :     .selcondition = "t.tgrelid=c1.oid and not t.tgisinternal",
     995              :     .result = "t.tgname",
     996              :     .refname = "c1.relname",
     997              :     .refviscondition = "pg_catalog.pg_table_is_visible(c1.oid)",
     998              :     .refnamespace = "c1.relnamespace",
     999              : };
    1000              : 
    1001              : 
    1002              : /*
    1003              :  * Queries to get lists of names of various kinds of things, possibly
    1004              :  * restricted to names matching a partially entered name.  Don't use
    1005              :  * this method where the user might wish to enter a schema-qualified
    1006              :  * name; make a SchemaQuery instead.
    1007              :  *
    1008              :  * In these queries, there must be a restriction clause of the form
    1009              :  *      output LIKE '%s'
    1010              :  * where "output" is the same string that the query returns.  The %s
    1011              :  * will be replaced by a LIKE pattern to match the already-typed text.
    1012              :  *
    1013              :  * There can be a second '%s', which will be replaced by a suitably-escaped
    1014              :  * version of the string provided in completion_ref_object.  If there is a
    1015              :  * third '%s', it will be replaced by a suitably-escaped version of the string
    1016              :  * provided in completion_ref_schema.  NOTE: using completion_ref_object
    1017              :  * that way is usually the wrong thing, and using completion_ref_schema
    1018              :  * that way is always the wrong thing.  Make a SchemaQuery instead.
    1019              :  */
    1020              : 
    1021              : #define Query_for_list_of_template_databases \
    1022              : "SELECT d.datname "\
    1023              : "  FROM pg_catalog.pg_database d "\
    1024              : " WHERE d.datname LIKE '%s' "\
    1025              : "   AND (d.datistemplate OR pg_catalog.pg_has_role(d.datdba, 'USAGE'))"
    1026              : 
    1027              : #define Query_for_list_of_databases \
    1028              : "SELECT datname FROM pg_catalog.pg_database "\
    1029              : " WHERE datname LIKE '%s'"
    1030              : 
    1031              : #define Query_for_list_of_database_vars \
    1032              : "SELECT conf FROM ("\
    1033              : "       SELECT setdatabase, pg_catalog.split_part(pg_catalog.unnest(setconfig),'=',1) conf"\
    1034              : "         FROM pg_db_role_setting "\
    1035              : "       ) s, pg_database d "\
    1036              : " WHERE s.setdatabase = d.oid "\
    1037              : "   AND conf LIKE '%s'"\
    1038              : "   AND d.datname LIKE '%s'"
    1039              : 
    1040              : #define Query_for_list_of_tablespaces \
    1041              : "SELECT spcname FROM pg_catalog.pg_tablespace "\
    1042              : " WHERE spcname LIKE '%s'"
    1043              : 
    1044              : #define Query_for_list_of_encodings \
    1045              : " SELECT DISTINCT pg_catalog.pg_encoding_to_char(conforencoding) "\
    1046              : "   FROM pg_catalog.pg_conversion "\
    1047              : "  WHERE pg_catalog.pg_encoding_to_char(conforencoding) LIKE pg_catalog.upper('%s')"
    1048              : 
    1049              : #define Query_for_list_of_languages \
    1050              : "SELECT lanname "\
    1051              : "  FROM pg_catalog.pg_language "\
    1052              : " WHERE lanname != 'internal' "\
    1053              : "   AND lanname LIKE '%s'"
    1054              : 
    1055              : #define Query_for_list_of_schemas \
    1056              : "SELECT nspname FROM pg_catalog.pg_namespace "\
    1057              : " WHERE nspname LIKE '%s'"
    1058              : 
    1059              : /* Use COMPLETE_WITH_QUERY_VERBATIM with these queries for GUC names: */
    1060              : #define Query_for_list_of_alter_system_set_vars \
    1061              : "SELECT pg_catalog.lower(name) FROM pg_catalog.pg_settings "\
    1062              : " WHERE context != 'internal' "\
    1063              : "   AND pg_catalog.lower(name) LIKE pg_catalog.lower('%s')"
    1064              : 
    1065              : #define Query_for_list_of_set_vars \
    1066              : "SELECT pg_catalog.lower(name) FROM pg_catalog.pg_settings "\
    1067              : " WHERE context IN ('user', 'superuser') "\
    1068              : "   AND pg_catalog.lower(name) LIKE pg_catalog.lower('%s')"
    1069              : 
    1070              : #define Query_for_list_of_show_vars \
    1071              : "SELECT pg_catalog.lower(name) FROM pg_catalog.pg_settings "\
    1072              : " WHERE pg_catalog.lower(name) LIKE pg_catalog.lower('%s')"
    1073              : 
    1074              : #define Query_for_list_of_roles \
    1075              : " SELECT rolname "\
    1076              : "   FROM pg_catalog.pg_roles "\
    1077              : "  WHERE rolname LIKE '%s'"
    1078              : 
    1079              : /* add these to Query_for_list_of_roles in OWNER contexts */
    1080              : #define Keywords_for_list_of_owner_roles \
    1081              : "CURRENT_ROLE", "CURRENT_USER", "SESSION_USER"
    1082              : 
    1083              : /* add these to Query_for_list_of_roles in GRANT contexts */
    1084              : #define Keywords_for_list_of_grant_roles \
    1085              : Keywords_for_list_of_owner_roles, "PUBLIC"
    1086              : 
    1087              : #define Query_for_all_table_constraints \
    1088              : "SELECT conname "\
    1089              : "  FROM pg_catalog.pg_constraint c "\
    1090              : " WHERE c.conrelid <> 0 "\
    1091              : "       and conname LIKE '%s'"
    1092              : 
    1093              : #define Query_for_list_of_fdws \
    1094              : " SELECT fdwname "\
    1095              : "   FROM pg_catalog.pg_foreign_data_wrapper "\
    1096              : "  WHERE fdwname LIKE '%s'"
    1097              : 
    1098              : #define Query_for_list_of_servers \
    1099              : " SELECT srvname "\
    1100              : "   FROM pg_catalog.pg_foreign_server "\
    1101              : "  WHERE srvname LIKE '%s'"
    1102              : 
    1103              : #define Query_for_list_of_user_mappings \
    1104              : " SELECT usename "\
    1105              : "   FROM pg_catalog.pg_user_mappings "\
    1106              : "  WHERE usename LIKE '%s'"
    1107              : 
    1108              : #define Query_for_list_of_user_vars \
    1109              : "SELECT conf FROM ("\
    1110              : "       SELECT rolname, pg_catalog.split_part(pg_catalog.unnest(rolconfig),'=',1) conf"\
    1111              : "         FROM pg_catalog.pg_roles"\
    1112              : "       ) s"\
    1113              : "  WHERE s.conf like '%s' "\
    1114              : "    AND s.rolname LIKE '%s'"
    1115              : 
    1116              : #define Query_for_list_of_access_methods \
    1117              : " SELECT amname "\
    1118              : "   FROM pg_catalog.pg_am "\
    1119              : "  WHERE amname LIKE '%s'"
    1120              : 
    1121              : #define Query_for_list_of_index_access_methods \
    1122              : " SELECT amname "\
    1123              : "   FROM pg_catalog.pg_am "\
    1124              : "  WHERE amname LIKE '%s' AND "\
    1125              : "   amtype=" CppAsString2(AMTYPE_INDEX)
    1126              : 
    1127              : #define Query_for_list_of_table_access_methods \
    1128              : " SELECT amname "\
    1129              : "   FROM pg_catalog.pg_am "\
    1130              : "  WHERE amname LIKE '%s' AND "\
    1131              : "   amtype=" CppAsString2(AMTYPE_TABLE)
    1132              : 
    1133              : #define Query_for_list_of_extensions \
    1134              : " SELECT extname "\
    1135              : "   FROM pg_catalog.pg_extension "\
    1136              : "  WHERE extname LIKE '%s'"
    1137              : 
    1138              : #define Query_for_list_of_available_extensions \
    1139              : " SELECT name "\
    1140              : "   FROM pg_catalog.pg_available_extensions "\
    1141              : "  WHERE name LIKE '%s' AND installed_version IS NULL"
    1142              : 
    1143              : #define Query_for_list_of_available_extension_versions \
    1144              : " SELECT version "\
    1145              : "   FROM pg_catalog.pg_available_extension_versions "\
    1146              : "  WHERE version LIKE '%s' AND name='%s'"
    1147              : 
    1148              : #define Query_for_list_of_prepared_statements \
    1149              : " SELECT name "\
    1150              : "   FROM pg_catalog.pg_prepared_statements "\
    1151              : "  WHERE name LIKE '%s'"
    1152              : 
    1153              : #define Query_for_list_of_event_triggers \
    1154              : " SELECT evtname "\
    1155              : "   FROM pg_catalog.pg_event_trigger "\
    1156              : "  WHERE evtname LIKE '%s'"
    1157              : 
    1158              : #define Query_for_list_of_tablesample_methods \
    1159              : " SELECT proname "\
    1160              : "   FROM pg_catalog.pg_proc "\
    1161              : "  WHERE prorettype = 'pg_catalog.tsm_handler'::pg_catalog.regtype AND "\
    1162              : "        proargtypes[0] = 'pg_catalog.internal'::pg_catalog.regtype AND "\
    1163              : "        proname LIKE '%s'"
    1164              : 
    1165              : #define Query_for_list_of_policies \
    1166              : " SELECT polname "\
    1167              : "   FROM pg_catalog.pg_policy "\
    1168              : "  WHERE polname LIKE '%s'"
    1169              : 
    1170              : #define Query_for_values_of_enum_GUC \
    1171              : " SELECT val FROM ( "\
    1172              : "   SELECT name, pg_catalog.unnest(enumvals) AS val "\
    1173              : "     FROM pg_catalog.pg_settings "\
    1174              : "    ) ss "\
    1175              : "  WHERE val LIKE '%s'"\
    1176              : "        and pg_catalog.lower(name)=pg_catalog.lower('%s')"
    1177              : 
    1178              : #define Query_for_list_of_channels \
    1179              : " SELECT channel "\
    1180              : "   FROM pg_catalog.pg_listening_channels() AS channel "\
    1181              : "  WHERE channel LIKE '%s'"
    1182              : 
    1183              : #define Query_for_list_of_cursors \
    1184              : " SELECT name "\
    1185              : "   FROM pg_catalog.pg_cursors "\
    1186              : "  WHERE name LIKE '%s'"
    1187              : 
    1188              : #define Query_for_list_of_timezone_names_unquoted \
    1189              : " SELECT name "\
    1190              : "   FROM pg_catalog.pg_timezone_names() "\
    1191              : "  WHERE pg_catalog.lower(name) LIKE pg_catalog.lower('%s')"
    1192              : 
    1193              : #define Query_for_list_of_timezone_names_quoted_out \
    1194              : "SELECT pg_catalog.quote_literal(name) AS name "\
    1195              : "  FROM pg_catalog.pg_timezone_names() "\
    1196              : " WHERE pg_catalog.lower(name) LIKE pg_catalog.lower('%s')"
    1197              : 
    1198              : #define Query_for_list_of_timezone_names_quoted_in \
    1199              : "SELECT pg_catalog.quote_literal(name) AS name "\
    1200              : "  FROM pg_catalog.pg_timezone_names() "\
    1201              : " WHERE pg_catalog.quote_literal(pg_catalog.lower(name)) LIKE pg_catalog.lower('%s')"
    1202              : 
    1203              : /* Privilege options shared between GRANT and REVOKE */
    1204              : #define Privilege_options_of_grant_and_revoke \
    1205              : "SELECT", "INSERT", "UPDATE", "DELETE", "TRUNCATE", "REFERENCES", "TRIGGER", \
    1206              : "CREATE", "CONNECT", "TEMPORARY", "EXECUTE", "USAGE", "SET", "ALTER SYSTEM", \
    1207              : "MAINTAIN", "ALL"
    1208              : 
    1209              : /* ALTER PROCEDURE options */
    1210              : #define Alter_procedure_options \
    1211              : "DEPENDS ON EXTENSION", "EXTERNAL SECURITY", "NO DEPENDS ON EXTENSION", \
    1212              : "OWNER TO", "RENAME TO", "RESET", "SECURITY", "SET"
    1213              : 
    1214              : /* ALTER ROUTINE options */
    1215              : #define Alter_routine_options \
    1216              : Alter_procedure_options, "COST", "IMMUTABLE", "LEAKPROOF", "NOT LEAKPROOF", \
    1217              : "PARALLEL", "ROWS", "STABLE", "VOLATILE"
    1218              : 
    1219              : /* ALTER FUNCTION options */
    1220              : #define Alter_function_options \
    1221              : Alter_routine_options, "CALLED ON NULL INPUT", "RETURNS NULL ON NULL INPUT", \
    1222              : "STRICT", "SUPPORT"
    1223              : 
    1224              : /* COPY options shared between FROM and TO */
    1225              : #define Copy_common_options \
    1226              : "DELIMITER", "ENCODING", "ESCAPE", "FORMAT", "HEADER", "NULL", "QUOTE"
    1227              : 
    1228              : /* COPY FROM options */
    1229              : #define Copy_from_options \
    1230              : Copy_common_options, "DEFAULT", "FORCE_NOT_NULL", "FORCE_NULL", "FREEZE", \
    1231              : "LOG_VERBOSITY", "ON_ERROR", "REJECT_LIMIT"
    1232              : 
    1233              : /* COPY TO options */
    1234              : #define Copy_to_options \
    1235              : Copy_common_options, "FORCE_QUOTE"
    1236              : 
    1237              : /*
    1238              :  * These object types were introduced later than our support cutoff of
    1239              :  * server version 9.2.  We use the VersionedQuery infrastructure so that
    1240              :  * we don't send certain-to-fail queries to older servers.
    1241              :  */
    1242              : 
    1243              : static const VersionedQuery Query_for_list_of_publications[] = {
    1244              :     {100000,
    1245              :         " SELECT pubname "
    1246              :         "   FROM pg_catalog.pg_publication "
    1247              :         "  WHERE pubname LIKE '%s'"
    1248              :     },
    1249              :     {0, NULL}
    1250              : };
    1251              : 
    1252              : static const VersionedQuery Query_for_list_of_subscriptions[] = {
    1253              :     {100000,
    1254              :         " SELECT s.subname "
    1255              :         "   FROM pg_catalog.pg_subscription s, pg_catalog.pg_database d "
    1256              :         "  WHERE s.subname LIKE '%s' "
    1257              :         "    AND d.datname = pg_catalog.current_database() "
    1258              :         "    AND s.subdbid = d.oid"
    1259              :     },
    1260              :     {0, NULL}
    1261              : };
    1262              : 
    1263              :  /* Known command-starting keywords. */
    1264              : static const char *const sql_commands[] = {
    1265              :     "ABORT", "ALTER", "ANALYZE", "BEGIN", "CALL", "CHECKPOINT", "CLOSE", "CLUSTER",
    1266              :     "COMMENT", "COMMIT", "COPY", "CREATE", "DEALLOCATE", "DECLARE",
    1267              :     "DELETE FROM", "DISCARD", "DO", "DROP", "END", "EXECUTE", "EXPLAIN",
    1268              :     "FETCH", "GRANT", "IMPORT FOREIGN SCHEMA", "INSERT INTO", "LISTEN", "LOAD", "LOCK",
    1269              :     "MERGE INTO", "MOVE", "NOTIFY", "PREPARE",
    1270              :     "REASSIGN", "REFRESH MATERIALIZED VIEW", "REINDEX", "RELEASE",
    1271              :     "RESET", "REVOKE", "ROLLBACK",
    1272              :     "SAVEPOINT", "SECURITY LABEL", "SELECT", "SET", "SHOW", "START",
    1273              :     "TABLE", "TRUNCATE", "UNLISTEN", "UPDATE", "VACUUM", "VALUES",
    1274              :     "WAIT FOR", "WITH",
    1275              :     NULL
    1276              : };
    1277              : 
    1278              : /*
    1279              :  * This is a list of all "things" in Pgsql, which can show up after CREATE or
    1280              :  * DROP; and there is also a query to get a list of them.
    1281              :  */
    1282              : 
    1283              : typedef struct
    1284              : {
    1285              :     const char *name;
    1286              :     /* Provide at most one of these three types of query: */
    1287              :     const char *query;          /* simple query, or NULL */
    1288              :     const VersionedQuery *vquery;   /* versioned query, or NULL */
    1289              :     const SchemaQuery *squery;  /* schema query, or NULL */
    1290              :     const char *const *keywords;    /* keywords to be offered as well */
    1291              :     const bits32 flags;         /* visibility flags, see below */
    1292              : } pgsql_thing_t;
    1293              : 
    1294              : #define THING_NO_CREATE     (1 << 0)  /* should not show up after CREATE */
    1295              : #define THING_NO_DROP       (1 << 1)  /* should not show up after DROP */
    1296              : #define THING_NO_ALTER      (1 << 2)  /* should not show up after ALTER */
    1297              : #define THING_NO_SHOW       (THING_NO_CREATE | THING_NO_DROP | THING_NO_ALTER)
    1298              : 
    1299              : /* When we have DROP USER etc, also offer MAPPING FOR */
    1300              : static const char *const Keywords_for_user_thing[] = {
    1301              :     "MAPPING FOR",
    1302              :     NULL
    1303              : };
    1304              : 
    1305              : static const pgsql_thing_t words_after_create[] = {
    1306              :     {"ACCESS METHOD", NULL, NULL, NULL, NULL, THING_NO_ALTER},
    1307              :     {"AGGREGATE", NULL, NULL, Query_for_list_of_aggregates},
    1308              :     {"CAST", NULL, NULL, NULL}, /* Casts have complex structures for names, so
    1309              :                                  * skip it */
    1310              :     {"COLLATION", NULL, NULL, &Query_for_list_of_collations},
    1311              : 
    1312              :     /*
    1313              :      * CREATE CONSTRAINT TRIGGER is not supported here because it is designed
    1314              :      * to be used only by pg_dump.
    1315              :      */
    1316              :     {"CONFIGURATION", NULL, NULL, &Query_for_list_of_ts_configurations, NULL, THING_NO_SHOW},
    1317              :     {"CONVERSION", "SELECT conname FROM pg_catalog.pg_conversion WHERE conname LIKE '%s'"},
    1318              :     {"DATABASE", Query_for_list_of_databases},
    1319              :     {"DEFAULT PRIVILEGES", NULL, NULL, NULL, NULL, THING_NO_CREATE | THING_NO_DROP},
    1320              :     {"DICTIONARY", NULL, NULL, &Query_for_list_of_ts_dictionaries, NULL, THING_NO_SHOW},
    1321              :     {"DOMAIN", NULL, NULL, &Query_for_list_of_domains},
    1322              :     {"EVENT TRIGGER", NULL, NULL, NULL},
    1323              :     {"EXTENSION", Query_for_list_of_extensions},
    1324              :     {"FOREIGN DATA WRAPPER", NULL, NULL, NULL},
    1325              :     {"FOREIGN TABLE", NULL, NULL, NULL},
    1326              :     {"FUNCTION", NULL, NULL, Query_for_list_of_functions},
    1327              :     {"GROUP", Query_for_list_of_roles},
    1328              :     {"INDEX", NULL, NULL, &Query_for_list_of_indexes},
    1329              :     {"LANGUAGE", Query_for_list_of_languages},
    1330              :     {"LARGE OBJECT", NULL, NULL, NULL, NULL, THING_NO_CREATE | THING_NO_DROP},
    1331              :     {"MATERIALIZED VIEW", NULL, NULL, &Query_for_list_of_matviews},
    1332              :     {"OPERATOR", NULL, NULL, NULL}, /* Querying for this is probably not such
    1333              :                                      * a good idea. */
    1334              :     {"OR REPLACE", NULL, NULL, NULL, NULL, THING_NO_DROP | THING_NO_ALTER},
    1335              :     {"OWNED", NULL, NULL, NULL, NULL, THING_NO_CREATE | THING_NO_ALTER},  /* for DROP OWNED BY ... */
    1336              :     {"PARSER", NULL, NULL, &Query_for_list_of_ts_parsers, NULL, THING_NO_SHOW},
    1337              :     {"POLICY", NULL, NULL, NULL},
    1338              :     {"PROCEDURE", NULL, NULL, Query_for_list_of_procedures},
    1339              :     {"PUBLICATION", NULL, Query_for_list_of_publications},
    1340              :     {"ROLE", Query_for_list_of_roles},
    1341              :     {"ROUTINE", NULL, NULL, &Query_for_list_of_routines, NULL, THING_NO_CREATE},
    1342              :     {"RULE", "SELECT rulename FROM pg_catalog.pg_rules WHERE rulename LIKE '%s'"},
    1343              :     {"SCHEMA", Query_for_list_of_schemas},
    1344              :     {"SEQUENCE", NULL, NULL, &Query_for_list_of_sequences},
    1345              :     {"SERVER", Query_for_list_of_servers},
    1346              :     {"STATISTICS", NULL, NULL, &Query_for_list_of_statistics},
    1347              :     {"SUBSCRIPTION", NULL, Query_for_list_of_subscriptions},
    1348              :     {"SYSTEM", NULL, NULL, NULL, NULL, THING_NO_CREATE | THING_NO_DROP},
    1349              :     {"TABLE", NULL, NULL, &Query_for_list_of_tables},
    1350              :     {"TABLESPACE", Query_for_list_of_tablespaces},
    1351              :     {"TEMP", NULL, NULL, NULL, NULL, THING_NO_DROP | THING_NO_ALTER}, /* for CREATE TEMP TABLE
    1352              :                                                                          * ... */
    1353              :     {"TEMPLATE", NULL, NULL, &Query_for_list_of_ts_templates, NULL, THING_NO_SHOW},
    1354              :     {"TEMPORARY", NULL, NULL, NULL, NULL, THING_NO_DROP | THING_NO_ALTER},    /* for CREATE TEMPORARY
    1355              :                                                                              * TABLE ... */
    1356              :     {"TEXT SEARCH", NULL, NULL, NULL},
    1357              :     {"TRANSFORM", NULL, NULL, NULL, NULL, THING_NO_ALTER},
    1358              :     {"TRIGGER", "SELECT tgname FROM pg_catalog.pg_trigger WHERE tgname LIKE '%s' AND NOT tgisinternal"},
    1359              :     {"TYPE", NULL, NULL, &Query_for_list_of_datatypes},
    1360              :     {"UNIQUE", NULL, NULL, NULL, NULL, THING_NO_DROP | THING_NO_ALTER}, /* for CREATE UNIQUE
    1361              :                                                                          * INDEX ... */
    1362              :     {"UNLOGGED", NULL, NULL, NULL, NULL, THING_NO_DROP | THING_NO_ALTER}, /* for CREATE UNLOGGED
    1363              :                                                                              * TABLE ... */
    1364              :     {"USER", Query_for_list_of_roles, NULL, NULL, Keywords_for_user_thing},
    1365              :     {"USER MAPPING FOR", NULL, NULL, NULL},
    1366              :     {"VIEW", NULL, NULL, &Query_for_list_of_views},
    1367              :     {NULL}                      /* end of list */
    1368              : };
    1369              : 
    1370              : /*
    1371              :  * The tcpatterns[] table provides the initial pattern-match rule for each
    1372              :  * switch case in match_previous_words().  The contents of the table
    1373              :  * are constructed by gen_tabcomplete.pl.
    1374              :  */
    1375              : 
    1376              : /* Basic match rules appearing in tcpatterns[].kind */
    1377              : enum TCPatternKind
    1378              : {
    1379              :     Match,
    1380              :     MatchCS,
    1381              :     HeadMatch,
    1382              :     HeadMatchCS,
    1383              :     TailMatch,
    1384              :     TailMatchCS,
    1385              : };
    1386              : 
    1387              : /* Things besides string literals that can appear in tcpatterns[].words */
    1388              : #define MatchAny  NULL
    1389              : #define MatchAnyExcept(pattern)  ("!" pattern)
    1390              : #define MatchAnyN ""
    1391              : 
    1392              : /* One entry in tcpatterns[] */
    1393              : typedef struct
    1394              : {
    1395              :     int         id;             /* case label used in match_previous_words */
    1396              :     enum TCPatternKind kind;    /* match kind, see above */
    1397              :     int         nwords;         /* length of words[] array */
    1398              :     const char *const *words;   /* array of match words */
    1399              : } TCPattern;
    1400              : 
    1401              : /* Macro emitted by gen_tabcomplete.pl to fill a tcpatterns[] entry */
    1402              : #define TCPAT(id, kind, ...) \
    1403              :     { (id), (kind), VA_ARGS_NARGS(__VA_ARGS__), \
    1404              :       (const char * const []) { __VA_ARGS__ } }
    1405              : 
    1406              : #ifdef SWITCH_CONVERSION_APPLIED
    1407              : 
    1408              : static const TCPattern tcpatterns[] =
    1409              : {
    1410              :     /* Insert tab-completion pattern data here. */
    1411              : };
    1412              : 
    1413              : #endif                          /* SWITCH_CONVERSION_APPLIED */
    1414              : 
    1415              : /* Storage parameters for CREATE TABLE and ALTER TABLE */
    1416              : static const char *const table_storage_parameters[] = {
    1417              :     "autovacuum_analyze_scale_factor",
    1418              :     "autovacuum_analyze_threshold",
    1419              :     "autovacuum_enabled",
    1420              :     "autovacuum_freeze_max_age",
    1421              :     "autovacuum_freeze_min_age",
    1422              :     "autovacuum_freeze_table_age",
    1423              :     "autovacuum_multixact_freeze_max_age",
    1424              :     "autovacuum_multixact_freeze_min_age",
    1425              :     "autovacuum_multixact_freeze_table_age",
    1426              :     "autovacuum_vacuum_cost_delay",
    1427              :     "autovacuum_vacuum_cost_limit",
    1428              :     "autovacuum_vacuum_insert_scale_factor",
    1429              :     "autovacuum_vacuum_insert_threshold",
    1430              :     "autovacuum_vacuum_max_threshold",
    1431              :     "autovacuum_vacuum_scale_factor",
    1432              :     "autovacuum_vacuum_threshold",
    1433              :     "fillfactor",
    1434              :     "log_autovacuum_min_duration",
    1435              :     "log_autoanalyze_min_duration",
    1436              :     "parallel_workers",
    1437              :     "toast.autovacuum_enabled",
    1438              :     "toast.autovacuum_freeze_max_age",
    1439              :     "toast.autovacuum_freeze_min_age",
    1440              :     "toast.autovacuum_freeze_table_age",
    1441              :     "toast.autovacuum_multixact_freeze_max_age",
    1442              :     "toast.autovacuum_multixact_freeze_min_age",
    1443              :     "toast.autovacuum_multixact_freeze_table_age",
    1444              :     "toast.autovacuum_vacuum_cost_delay",
    1445              :     "toast.autovacuum_vacuum_cost_limit",
    1446              :     "toast.autovacuum_vacuum_insert_scale_factor",
    1447              :     "toast.autovacuum_vacuum_insert_threshold",
    1448              :     "toast.autovacuum_vacuum_max_threshold",
    1449              :     "toast.autovacuum_vacuum_scale_factor",
    1450              :     "toast.autovacuum_vacuum_threshold",
    1451              :     "toast.log_autovacuum_min_duration",
    1452              :     "toast.vacuum_index_cleanup",
    1453              :     "toast.vacuum_max_eager_freeze_failure_rate",
    1454              :     "toast.vacuum_truncate",
    1455              :     "toast_tuple_target",
    1456              :     "user_catalog_table",
    1457              :     "vacuum_index_cleanup",
    1458              :     "vacuum_max_eager_freeze_failure_rate",
    1459              :     "vacuum_truncate",
    1460              :     NULL
    1461              : };
    1462              : 
    1463              : /* Optional parameters for CREATE VIEW and ALTER VIEW */
    1464              : static const char *const view_optional_parameters[] = {
    1465              :     "check_option",
    1466              :     "security_barrier",
    1467              :     "security_invoker",
    1468              :     NULL
    1469              : };
    1470              : 
    1471              : /* Forward declaration of functions */
    1472              : static char **psql_completion(const char *text, int start, int end);
    1473              : static char **match_previous_words(int pattern_id,
    1474              :                                    const char *text, int start, int end,
    1475              :                                    char **previous_words,
    1476              :                                    int previous_words_count);
    1477              : static char *create_command_generator(const char *text, int state);
    1478              : static char *drop_command_generator(const char *text, int state);
    1479              : static char *alter_command_generator(const char *text, int state);
    1480              : static char *complete_from_query(const char *text, int state);
    1481              : static char *complete_from_versioned_query(const char *text, int state);
    1482              : static char *complete_from_schema_query(const char *text, int state);
    1483              : static char *complete_from_versioned_schema_query(const char *text, int state);
    1484              : static char *_complete_from_query(const char *simple_query,
    1485              :                                   const SchemaQuery *schema_query,
    1486              :                                   const char *const *keywords,
    1487              :                                   bool verbatim,
    1488              :                                   const char *text, int state);
    1489              : static void set_completion_reference(const char *word);
    1490              : static void set_completion_reference_verbatim(const char *word);
    1491              : static char *complete_from_list(const char *text, int state);
    1492              : static char *complete_from_const(const char *text, int state);
    1493              : static void append_variable_names(char ***varnames, int *nvars,
    1494              :                                   int *maxvars, const char *varname,
    1495              :                                   const char *prefix, const char *suffix);
    1496              : static char **complete_from_variables(const char *text,
    1497              :                                       const char *prefix, const char *suffix, bool need_value);
    1498              : static char *complete_from_files(const char *text, int state);
    1499              : static char *_complete_from_files(const char *text, int state);
    1500              : 
    1501              : static char *pg_strdup_keyword_case(const char *s, const char *ref);
    1502              : static char *escape_string(const char *text);
    1503              : static char *make_like_pattern(const char *word);
    1504              : static void parse_identifier(const char *ident,
    1505              :                              char **schemaname, char **objectname,
    1506              :                              bool *schemaquoted, bool *objectquoted);
    1507              : static char *requote_identifier(const char *schemaname, const char *objectname,
    1508              :                                 bool quote_schema, bool quote_object);
    1509              : static bool identifier_needs_quotes(const char *ident);
    1510              : static PGresult *exec_query(const char *query);
    1511              : 
    1512              : static char **get_previous_words(int point, char **buffer, int *nwords);
    1513              : 
    1514              : static char *get_guctype(const char *varname);
    1515              : 
    1516              : #ifdef USE_FILENAME_QUOTING_FUNCTIONS
    1517              : static char *quote_file_name(char *fname, int match_type, char *quote_pointer);
    1518              : static char *dequote_file_name(char *fname, int quote_char);
    1519              : #endif
    1520              : 
    1521              : 
    1522              : /*
    1523              :  * Initialize the readline library for our purposes.
    1524              :  */
    1525              : void
    1526            3 : initialize_readline(void)
    1527              : {
    1528            3 :     rl_readline_name = (char *) pset.progname;
    1529            3 :     rl_attempted_completion_function = psql_completion;
    1530              : 
    1531              : #ifdef USE_FILENAME_QUOTING_FUNCTIONS
    1532            3 :     rl_filename_quoting_function = quote_file_name;
    1533            3 :     rl_filename_dequoting_function = dequote_file_name;
    1534              : #endif
    1535              : 
    1536            3 :     rl_basic_word_break_characters = WORD_BREAKS;
    1537              : 
    1538              :     /*
    1539              :      * Ideally we'd include '"' in rl_completer_quote_characters too, which
    1540              :      * should allow us to complete quoted identifiers that include spaces.
    1541              :      * However, the library support for rl_completer_quote_characters is
    1542              :      * presently too inconsistent to want to mess with that.  (Note in
    1543              :      * particular that libedit has this variable but completely ignores it.)
    1544              :      */
    1545            3 :     rl_completer_quote_characters = "'";
    1546              : 
    1547              :     /*
    1548              :      * Set rl_filename_quote_characters to "all possible characters",
    1549              :      * otherwise Readline will skip filename quoting if it thinks a filename
    1550              :      * doesn't need quoting.  Readline actually interprets this as bytes, so
    1551              :      * there are no encoding considerations here.
    1552              :      */
    1553              : #ifdef HAVE_RL_FILENAME_QUOTE_CHARACTERS
    1554              :     {
    1555            3 :         unsigned char *fqc = (unsigned char *) pg_malloc(256);
    1556              : 
    1557          768 :         for (int i = 0; i < 255; i++)
    1558          765 :             fqc[i] = (unsigned char) (i + 1);
    1559            3 :         fqc[255] = '\0';
    1560            3 :         rl_filename_quote_characters = (const char *) fqc;
    1561              :     }
    1562              : #endif
    1563              : 
    1564            3 :     completion_max_records = 1000;
    1565              : 
    1566              :     /*
    1567              :      * There is a variable rl_completion_query_items for this but apparently
    1568              :      * it's not defined everywhere.
    1569              :      */
    1570            3 : }
    1571              : 
    1572              : /*
    1573              :  * Check if 'word' matches any of the '|'-separated strings in 'pattern',
    1574              :  * using case-insensitive or case-sensitive comparisons.
    1575              :  *
    1576              :  * If pattern is NULL, it's a wild card that matches any word.
    1577              :  * If pattern begins with '!', the result is negated, ie we check that 'word'
    1578              :  * does *not* match any alternative appearing in the rest of 'pattern'.
    1579              :  * Any alternative can contain '*' which is a wild card, i.e., it can match
    1580              :  * any substring; however, we allow at most one '*' per alternative.
    1581              :  *
    1582              :  * For readability, callers should use the macros MatchAny and MatchAnyExcept
    1583              :  * to invoke those two special cases for 'pattern'.  (But '|' and '*' must
    1584              :  * just be written directly in patterns.)  There is also MatchAnyN, but that
    1585              :  * is supported only in Matches/MatchesCS and is not handled here.
    1586              :  */
    1587              : static bool
    1588         7843 : word_matches(const char *pattern,
    1589              :              const char *word,
    1590              :              bool case_sensitive)
    1591              : {
    1592              :     size_t      wordlen;
    1593              : 
    1594              : #define cimatch(s1, s2, n) \
    1595              :     (case_sensitive ? strncmp(s1, s2, n) == 0 : pg_strncasecmp(s1, s2, n) == 0)
    1596              : 
    1597              :     /* NULL pattern matches anything. */
    1598         7843 :     if (pattern == NULL)
    1599          161 :         return true;
    1600              : 
    1601              :     /* Handle negated patterns from the MatchAnyExcept macro. */
    1602         7682 :     if (*pattern == '!')
    1603            2 :         return !word_matches(pattern + 1, word, case_sensitive);
    1604              : 
    1605              :     /* Else consider each alternative in the pattern. */
    1606         7680 :     wordlen = strlen(word);
    1607              :     for (;;)
    1608          787 :     {
    1609         8467 :         const char *star = NULL;
    1610              :         const char *c;
    1611              : 
    1612              :         /* Find end of current alternative, and locate any wild card. */
    1613         8467 :         c = pattern;
    1614        56521 :         while (*c != '\0' && *c != '|')
    1615              :         {
    1616        48054 :             if (*c == '*')
    1617          409 :                 star = c;
    1618        48054 :             c++;
    1619              :         }
    1620              :         /* Was there a wild card? */
    1621         8467 :         if (star)
    1622              :         {
    1623              :             /* Yes, wildcard match? */
    1624          409 :             size_t      beforelen = star - pattern,
    1625          409 :                         afterlen = c - star - 1;
    1626              : 
    1627          809 :             if (wordlen >= (beforelen + afterlen) &&
    1628          414 :                 cimatch(word, pattern, beforelen) &&
    1629            7 :                 cimatch(word + wordlen - afterlen, star + 1, afterlen))
    1630            7 :                 return true;
    1631              :         }
    1632              :         else
    1633              :         {
    1634              :             /* No, plain match? */
    1635        10219 :             if (wordlen == (c - pattern) &&
    1636         2161 :                 cimatch(word, pattern, wordlen))
    1637         1213 :                 return true;
    1638              :         }
    1639              :         /* Out of alternatives? */
    1640         7247 :         if (*c == '\0')
    1641         6460 :             break;
    1642              :         /* Nope, try next alternative. */
    1643          787 :         pattern = c + 1;
    1644              :     }
    1645              : 
    1646         6460 :     return false;
    1647              : }
    1648              : 
    1649              : /*
    1650              :  * Implementation of TailMatches and TailMatchesCS tests: do the last N words
    1651              :  * in previous_words match the pattern arguments?
    1652              :  *
    1653              :  * The array indexing might look backwards, but remember that
    1654              :  * previous_words[0] contains the *last* word on the line, not the first.
    1655              :  */
    1656              : static bool
    1657         7359 : TailMatchesArray(bool case_sensitive,
    1658              :                  int previous_words_count, char **previous_words,
    1659              :                  int narg, const char *const *args)
    1660              : {
    1661         7359 :     if (previous_words_count < narg)
    1662         5226 :         return false;
    1663              : 
    1664         2220 :     for (int argno = 0; argno < narg; argno++)
    1665              :     {
    1666         2183 :         const char *arg = args[argno];
    1667              : 
    1668         2183 :         if (!word_matches(arg, previous_words[narg - argno - 1],
    1669              :                           case_sensitive))
    1670         2096 :             return false;
    1671              :     }
    1672              : 
    1673           37 :     return true;
    1674              : }
    1675              : 
    1676              : /*
    1677              :  * As above, but the pattern is passed as a variadic argument list.
    1678              :  */
    1679              : static bool
    1680           36 : TailMatchesImpl(bool case_sensitive,
    1681              :                 int previous_words_count, char **previous_words,
    1682              :                 int narg,...)
    1683              : {
    1684              :     const char *argarray[64];
    1685              :     va_list     args;
    1686              : 
    1687              :     Assert(narg <= lengthof(argarray));
    1688              : 
    1689           36 :     if (previous_words_count < narg)
    1690           10 :         return false;
    1691              : 
    1692           26 :     va_start(args, narg);
    1693           64 :     for (int argno = 0; argno < narg; argno++)
    1694           38 :         argarray[argno] = va_arg(args, const char *);
    1695           26 :     va_end(args);
    1696              : 
    1697           26 :     return TailMatchesArray(case_sensitive,
    1698              :                             previous_words_count, previous_words,
    1699              :                             narg, argarray);
    1700              : }
    1701              : 
    1702              : /*
    1703              :  * Implementation of HeadMatches and HeadMatchesCS tests: do the first N
    1704              :  * words in previous_words match the pattern arguments?
    1705              :  */
    1706              : static bool
    1707         4839 : HeadMatchesArray(bool case_sensitive,
    1708              :                  int previous_words_count, char **previous_words,
    1709              :                  int narg, const char *const *args)
    1710              : {
    1711         4839 :     if (previous_words_count < narg)
    1712          442 :         return false;
    1713              : 
    1714         5693 :     for (int argno = 0; argno < narg; argno++)
    1715              :     {
    1716         5658 :         const char *arg = args[argno];
    1717              : 
    1718         5658 :         if (!word_matches(arg, previous_words[previous_words_count - argno - 1],
    1719              :                           case_sensitive))
    1720         4362 :             return false;
    1721              :     }
    1722              : 
    1723           35 :     return true;
    1724              : }
    1725              : 
    1726              : /*
    1727              :  * As above, but the pattern is passed as a variadic argument list.
    1728              :  */
    1729              : static bool
    1730           10 : HeadMatchesImpl(bool case_sensitive,
    1731              :                 int previous_words_count, char **previous_words,
    1732              :                 int narg,...)
    1733              : {
    1734              :     const char *argarray[64];
    1735              :     va_list     args;
    1736              : 
    1737              :     Assert(narg <= lengthof(argarray));
    1738              : 
    1739           10 :     if (previous_words_count < narg)
    1740            2 :         return false;
    1741              : 
    1742            8 :     va_start(args, narg);
    1743           25 :     for (int argno = 0; argno < narg; argno++)
    1744           17 :         argarray[argno] = va_arg(args, const char *);
    1745            8 :     va_end(args);
    1746              : 
    1747            8 :     return HeadMatchesArray(case_sensitive,
    1748              :                             previous_words_count, previous_words,
    1749              :                             narg, argarray);
    1750              : }
    1751              : 
    1752              : /*
    1753              :  * Implementation of Matches and MatchesCS tests: do all of the words
    1754              :  * in previous_words match the pattern arguments?
    1755              :  *
    1756              :  * This supports an additional kind of wildcard: MatchAnyN (represented as "")
    1757              :  * can match any number of words, including zero, in the middle of the list.
    1758              :  */
    1759              : static bool
    1760        26433 : MatchesArray(bool case_sensitive,
    1761              :              int previous_words_count, char **previous_words,
    1762              :              int narg, const char *const *args)
    1763              : {
    1764        26433 :     int         match_any_pos = -1;
    1765              : 
    1766              :     /* Even with MatchAnyN, there must be at least N-1 words */
    1767        26433 :     if (previous_words_count < narg - 1)
    1768        14605 :         return false;
    1769              : 
    1770              :     /* Check for MatchAnyN */
    1771        47515 :     for (int argno = 0; argno < narg; argno++)
    1772              :     {
    1773        36318 :         const char *arg = args[argno];
    1774              : 
    1775        36318 :         if (arg != NULL && arg[0] == '\0')
    1776              :         {
    1777          631 :             match_any_pos = argno;
    1778          631 :             break;
    1779              :         }
    1780              :     }
    1781              : 
    1782        11828 :     if (match_any_pos < 0)
    1783              :     {
    1784              :         /* Standard case without MatchAnyN */
    1785        11197 :         if (previous_words_count != narg)
    1786         7735 :             return false;
    1787              : 
    1788              :         /* Either Head or Tail match will do for the rest */
    1789         3462 :         if (!HeadMatchesArray(case_sensitive,
    1790              :                               previous_words_count, previous_words,
    1791              :                               narg, args))
    1792         3435 :             return false;
    1793              :     }
    1794              :     else
    1795              :     {
    1796              :         /* Match against head */
    1797          631 :         if (!HeadMatchesArray(case_sensitive,
    1798              :                               previous_words_count, previous_words,
    1799              :                               match_any_pos, args))
    1800          631 :             return false;
    1801              : 
    1802              :         /* Match against tail */
    1803            0 :         if (!TailMatchesArray(case_sensitive,
    1804              :                               previous_words_count, previous_words,
    1805            0 :                               narg - match_any_pos - 1,
    1806            0 :                               args + match_any_pos + 1))
    1807            0 :             return false;
    1808              :     }
    1809              : 
    1810           27 :     return true;
    1811              : }
    1812              : 
    1813              : /*
    1814              :  * As above, but the pattern is passed as a variadic argument list.
    1815              :  */
    1816              : static bool
    1817           14 : MatchesImpl(bool case_sensitive,
    1818              :             int previous_words_count, char **previous_words,
    1819              :             int narg,...)
    1820              : {
    1821              :     const char *argarray[64];
    1822              :     va_list     args;
    1823              : 
    1824              :     Assert(narg <= lengthof(argarray));
    1825              : 
    1826              :     /* Even with MatchAnyN, there must be at least N-1 words */
    1827           14 :     if (previous_words_count < narg - 1)
    1828            0 :         return false;
    1829              : 
    1830           14 :     va_start(args, narg);
    1831           56 :     for (int argno = 0; argno < narg; argno++)
    1832           42 :         argarray[argno] = va_arg(args, const char *);
    1833           14 :     va_end(args);
    1834              : 
    1835           14 :     return MatchesArray(case_sensitive,
    1836              :                         previous_words_count, previous_words,
    1837              :                         narg, argarray);
    1838              : }
    1839              : 
    1840              : /*
    1841              :  * Check if the final character of 's' is 'c'.
    1842              :  */
    1843              : static bool
    1844            3 : ends_with(const char *s, char c)
    1845              : {
    1846            3 :     size_t      length = strlen(s);
    1847              : 
    1848            3 :     return (length > 0 && s[length - 1] == c);
    1849              : }
    1850              : 
    1851              : /*
    1852              :  * The completion function.
    1853              :  *
    1854              :  * According to readline spec this gets passed the text entered so far and its
    1855              :  * start and end positions in the readline buffer. The return value is some
    1856              :  * partially obscure list format that can be generated by readline's
    1857              :  * rl_completion_matches() function, so we don't have to worry about it.
    1858              :  */
    1859              : static char **
    1860           67 : psql_completion(const char *text, int start, int end)
    1861              : {
    1862              :     /* This is the variable we'll return. */
    1863           67 :     char      **matches = NULL;
    1864              : 
    1865              :     /* Workspace for parsed words. */
    1866              :     char       *words_buffer;
    1867              : 
    1868              :     /* This array will contain pointers to parsed words. */
    1869              :     char      **previous_words;
    1870              : 
    1871              :     /* The number of words found on the input line. */
    1872              :     int         previous_words_count;
    1873              : 
    1874              :     /*
    1875              :      * For compactness, we use these macros to reference previous_words[].
    1876              :      * Caution: do not access a previous_words[] entry without having checked
    1877              :      * previous_words_count to be sure it's valid.  In most cases below, that
    1878              :      * check is implicit in a TailMatches() or similar macro, but in some
    1879              :      * places we have to check it explicitly.
    1880              :      */
    1881              : #define prev_wd   (previous_words[0])
    1882              : #define prev2_wd  (previous_words[1])
    1883              : #define prev3_wd  (previous_words[2])
    1884              : #define prev4_wd  (previous_words[3])
    1885              : #define prev5_wd  (previous_words[4])
    1886              : #define prev6_wd  (previous_words[5])
    1887              : #define prev7_wd  (previous_words[6])
    1888              : #define prev8_wd  (previous_words[7])
    1889              : #define prev9_wd  (previous_words[8])
    1890              : 
    1891              :     /* Match the last N words before point, case-insensitively. */
    1892              : #define TailMatches(...) \
    1893              :     TailMatchesImpl(false, previous_words_count, previous_words, \
    1894              :                     VA_ARGS_NARGS(__VA_ARGS__), __VA_ARGS__)
    1895              : 
    1896              :     /* Match the last N words before point, case-sensitively. */
    1897              : #define TailMatchesCS(...) \
    1898              :     TailMatchesImpl(true, previous_words_count, previous_words, \
    1899              :                     VA_ARGS_NARGS(__VA_ARGS__), __VA_ARGS__)
    1900              : 
    1901              :     /* Match N words representing all of the line, case-insensitively. */
    1902              : #define Matches(...) \
    1903              :     MatchesImpl(false, previous_words_count, previous_words, \
    1904              :                 VA_ARGS_NARGS(__VA_ARGS__), __VA_ARGS__)
    1905              : 
    1906              :     /* Match N words representing all of the line, case-sensitively. */
    1907              : #define MatchesCS(...) \
    1908              :     MatchesImpl(true, previous_words_count, previous_words, \
    1909              :                 VA_ARGS_NARGS(__VA_ARGS__), __VA_ARGS__)
    1910              : 
    1911              :     /* Match the first N words on the line, case-insensitively. */
    1912              : #define HeadMatches(...) \
    1913              :     HeadMatchesImpl(false, previous_words_count, previous_words, \
    1914              :                     VA_ARGS_NARGS(__VA_ARGS__), __VA_ARGS__)
    1915              : 
    1916              :     /* Match the first N words on the line, case-sensitively. */
    1917              : #define HeadMatchesCS(...) \
    1918              :     HeadMatchesImpl(true, previous_words_count, previous_words, \
    1919              :                     VA_ARGS_NARGS(__VA_ARGS__), __VA_ARGS__)
    1920              : 
    1921              :     /* psql's backslash commands. */
    1922              :     static const char *const backslash_commands[] = {
    1923              :         "\\a",
    1924              :         "\\bind", "\\bind_named",
    1925              :         "\\connect", "\\conninfo", "\\C", "\\cd", "\\close_prepared", "\\copy",
    1926              :         "\\copyright", "\\crosstabview",
    1927              :         "\\d", "\\da", "\\dA", "\\dAc", "\\dAf", "\\dAo", "\\dAp",
    1928              :         "\\db", "\\dc", "\\dconfig", "\\dC", "\\dd", "\\ddp", "\\dD",
    1929              :         "\\des", "\\det", "\\deu", "\\dew", "\\dE", "\\df",
    1930              :         "\\dF", "\\dFd", "\\dFp", "\\dFt", "\\dg", "\\di", "\\dl", "\\dL",
    1931              :         "\\dm", "\\dn", "\\do", "\\dO", "\\dp", "\\dP", "\\dPi", "\\dPt",
    1932              :         "\\drds", "\\drg", "\\dRs", "\\dRp", "\\ds",
    1933              :         "\\dt", "\\dT", "\\dv", "\\du", "\\dx", "\\dX", "\\dy",
    1934              :         "\\echo", "\\edit", "\\ef", "\\elif", "\\else", "\\encoding",
    1935              :         "\\endif", "\\endpipeline", "\\errverbose", "\\ev",
    1936              :         "\\f", "\\flush", "\\flushrequest",
    1937              :         "\\g", "\\gdesc", "\\getenv", "\\getresults", "\\gexec", "\\gset", "\\gx",
    1938              :         "\\help", "\\html",
    1939              :         "\\if", "\\include", "\\include_relative", "\\ir",
    1940              :         "\\list", "\\lo_import", "\\lo_export", "\\lo_list", "\\lo_unlink",
    1941              :         "\\out",
    1942              :         "\\parse", "\\password", "\\print", "\\prompt", "\\pset",
    1943              :         "\\qecho", "\\quit",
    1944              :         "\\reset", "\\restrict",
    1945              :         "\\s", "\\sendpipeline", "\\set", "\\setenv", "\\sf",
    1946              :         "\\startpipeline", "\\sv", "\\syncpipeline",
    1947              :         "\\t", "\\T", "\\timing",
    1948              :         "\\unrestrict", "\\unset",
    1949              :         "\\x",
    1950              :         "\\warn", "\\watch", "\\write",
    1951              :         "\\z",
    1952              :         "\\!", "\\?",
    1953              :         NULL
    1954              :     };
    1955              : 
    1956              :     /*
    1957              :      * Temporary workaround for a bug in recent (2019) libedit: it incorrectly
    1958              :      * de-escapes the input "text", causing us to fail to recognize backslash
    1959              :      * commands.  So get the string to look at from rl_line_buffer instead.
    1960              :      */
    1961           67 :     char       *text_copy = pnstrdup(rl_line_buffer + start, end - start);
    1962           67 :     text = text_copy;
    1963              : 
    1964              :     /* Remember last char of the given input word. */
    1965           67 :     completion_last_char = (end > start) ? text[end - start - 1] : '\0';
    1966              : 
    1967              :     /* We usually want the append character to be a space. */
    1968           67 :     rl_completion_append_character = ' ';
    1969              : 
    1970              :     /* Clear a few things. */
    1971           67 :     completion_charp = NULL;
    1972           67 :     completion_charpp = NULL;
    1973           67 :     completion_vquery = NULL;
    1974           67 :     completion_squery = NULL;
    1975           67 :     completion_ref_object = NULL;
    1976           67 :     completion_ref_schema = NULL;
    1977              : 
    1978              :     /*
    1979              :      * Scan the input line to extract the words before our current position.
    1980              :      * According to those we'll make some smart decisions on what the user is
    1981              :      * probably intending to type.
    1982              :      */
    1983           67 :     previous_words = get_previous_words(start,
    1984              :                                         &words_buffer,
    1985              :                                         &previous_words_count);
    1986              : 
    1987              :     /* If current word is a backslash command, offer completions for that */
    1988           67 :     if (text[0] == '\\')
    1989            1 :         COMPLETE_WITH_LIST_CS(backslash_commands);
    1990              : 
    1991              :     /* If current word is a variable interpolation, handle that case */
    1992           66 :     else if (text[0] == ':' && text[1] != ':')
    1993              :     {
    1994            2 :         if (text[1] == '\'')
    1995            0 :             matches = complete_from_variables(text, ":'", "'", true);
    1996            2 :         else if (text[1] == '"')
    1997            0 :             matches = complete_from_variables(text, ":\"", "\"", true);
    1998            2 :         else if (text[1] == '{' && text[2] == '?')
    1999            1 :             matches = complete_from_variables(text, ":{?", "}", true);
    2000              :         else
    2001            1 :             matches = complete_from_variables(text, ":", "", true);
    2002              :     }
    2003              : 
    2004              :     /* If no previous word, suggest one of the basic sql commands */
    2005           64 :     else if (previous_words_count == 0)
    2006            2 :         COMPLETE_WITH_LIST(sql_commands);
    2007              : 
    2008              :     /* Else try completions based on matching patterns of previous words */
    2009              :     else
    2010              :     {
    2011              : #ifdef SWITCH_CONVERSION_APPLIED
    2012              :         /*
    2013              :          * If we have transformed match_previous_words into a switch, iterate
    2014              :          * through tcpatterns[] to see which pattern ids match.
    2015              :          *
    2016              :          * For now, we have to try the patterns in the order they are stored
    2017              :          * (matching the order of switch cases in match_previous_words),
    2018              :          * because some of the logic in match_previous_words assumes that
    2019              :          * previous matches have been eliminated.  This is fairly
    2020              :          * unprincipled, and it is likely that there are undesirable as well
    2021              :          * as desirable interactions hidden in the order of the pattern
    2022              :          * checks.  TODO: think about a better way to manage that.
    2023              :          */
    2024        34496 :         for (int tindx = 0; tindx < lengthof(tcpatterns); tindx++)
    2025              :         {
    2026        34490 :             const TCPattern *tcpat = tcpatterns + tindx;
    2027        34490 :             bool        match = false;
    2028              : 
    2029        34490 :             switch (tcpat->kind)
    2030              :             {
    2031        26419 :                 case Match:
    2032        26419 :                     match = MatchesArray(false,
    2033              :                                          previous_words_count,
    2034              :                                          previous_words,
    2035        26419 :                                          tcpat->nwords, tcpat->words);
    2036        26419 :                     break;
    2037            0 :                 case MatchCS:
    2038            0 :                     match = MatchesArray(true,
    2039              :                                          previous_words_count,
    2040              :                                          previous_words,
    2041            0 :                                          tcpat->nwords, tcpat->words);
    2042            0 :                     break;
    2043          718 :                 case HeadMatch:
    2044          718 :                     match = HeadMatchesArray(false,
    2045              :                                              previous_words_count,
    2046              :                                              previous_words,
    2047          718 :                                              tcpat->nwords, tcpat->words);
    2048          718 :                     break;
    2049           20 :                 case HeadMatchCS:
    2050           20 :                     match = HeadMatchesArray(true,
    2051              :                                              previous_words_count,
    2052              :                                              previous_words,
    2053           20 :                                              tcpat->nwords, tcpat->words);
    2054           20 :                     break;
    2055         6734 :                 case TailMatch:
    2056         6734 :                     match = TailMatchesArray(false,
    2057              :                                              previous_words_count,
    2058              :                                              previous_words,
    2059         6734 :                                              tcpat->nwords, tcpat->words);
    2060         6734 :                     break;
    2061          599 :                 case TailMatchCS:
    2062          599 :                     match = TailMatchesArray(true,
    2063              :                                              previous_words_count,
    2064              :                                              previous_words,
    2065          599 :                                              tcpat->nwords, tcpat->words);
    2066          599 :                     break;
    2067              :             }
    2068        34490 :             if (match)
    2069              :             {
    2070           58 :                 matches = match_previous_words(tcpat->id, text, start, end,
    2071              :                                                previous_words,
    2072              :                                                previous_words_count);
    2073           58 :                 if (matches != NULL)
    2074           56 :                     break;
    2075              :             }
    2076              :         }
    2077              : #else                           /* !SWITCH_CONVERSION_APPLIED */
    2078              :         /*
    2079              :          * If gen_tabcomplete.pl hasn't been applied to this code, just let
    2080              :          * match_previous_words scan through all its patterns.
    2081              :          */
    2082              :         matches = match_previous_words(0, text, start, end,
    2083              :                                        previous_words,
    2084              :                                        previous_words_count);
    2085              : #endif                          /* SWITCH_CONVERSION_APPLIED */
    2086              :     }
    2087              : 
    2088              :     /*
    2089              :      * Finally, we look through the list of "things", such as TABLE, INDEX and
    2090              :      * check if that was the previous word. If so, execute the query to get a
    2091              :      * list of them.
    2092              :      */
    2093           67 :     if (matches == NULL && previous_words_count > 0)
    2094              :     {
    2095              :         const pgsql_thing_t *wac;
    2096              : 
    2097          248 :         for (wac = words_after_create; wac->name != NULL; wac++)
    2098              :         {
    2099          246 :             if (pg_strcasecmp(prev_wd, wac->name) == 0)
    2100              :             {
    2101            4 :                 if (wac->query)
    2102            0 :                     COMPLETE_WITH_QUERY_LIST(wac->query,
    2103              :                                              wac->keywords);
    2104            4 :                 else if (wac->vquery)
    2105            1 :                     COMPLETE_WITH_VERSIONED_QUERY_LIST(wac->vquery,
    2106              :                                                        wac->keywords);
    2107            3 :                 else if (wac->squery)
    2108            3 :                     COMPLETE_WITH_VERSIONED_SCHEMA_QUERY_LIST(wac->squery,
    2109              :                                                               wac->keywords);
    2110            4 :                 break;
    2111              :             }
    2112              :         }
    2113              :     }
    2114              : 
    2115              :     /*
    2116              :      * If we still don't have anything to match we have to fabricate some sort
    2117              :      * of default list. If we were to just return NULL, readline automatically
    2118              :      * attempts filename completion, and that's usually no good.
    2119              :      */
    2120           67 :     if (matches == NULL)
    2121              :     {
    2122            2 :         COMPLETE_WITH_CONST(true, "");
    2123              :         /* Also, prevent Readline from appending stuff to the non-match */
    2124            2 :         rl_completion_append_character = '\0';
    2125              : #ifdef HAVE_RL_COMPLETION_SUPPRESS_QUOTE
    2126            2 :         rl_completion_suppress_quote = 1;
    2127              : #endif
    2128              :     }
    2129              : 
    2130              :     /* free storage */
    2131           67 :     free(previous_words);
    2132           67 :     free(words_buffer);
    2133           67 :     free(text_copy);
    2134           67 :     free(completion_ref_object);
    2135           67 :     completion_ref_object = NULL;
    2136           67 :     free(completion_ref_schema);
    2137           67 :     completion_ref_schema = NULL;
    2138              : 
    2139              :     /* Return our Grand List O' Matches */
    2140           67 :     return matches;
    2141              : }
    2142              : 
    2143              : /*
    2144              :  * Subroutine to try matches based on previous_words.
    2145              :  *
    2146              :  * This can operate in one of two modes.  As presented, the body of the
    2147              :  * function is a long if-else-if chain that sequentially tries each known
    2148              :  * match rule.  That works, but some C compilers have trouble with such a long
    2149              :  * else-if chain, either taking extra time to compile or failing altogether.
    2150              :  * Therefore, we prefer to transform the else-if chain into a switch, and then
    2151              :  * each call of this function considers just one match rule (under control of
    2152              :  * a loop in psql_completion()).  Compilers tend to be more ready to deal
    2153              :  * with many-arm switches than many-arm else-if chains.
    2154              :  *
    2155              :  * Each if-condition in this function must begin with a call of one of the
    2156              :  * functions Matches, HeadMatches, TailMatches, MatchesCS, HeadMatchesCS, or
    2157              :  * TailMatchesCS.  The preprocessor gen_tabcomplete.pl strips out those
    2158              :  * calls and converts them into entries in tcpatterns[], which are evaluated
    2159              :  * by the calling loop in psql_completion().  Successful matches result in
    2160              :  * calls to this function with the appropriate pattern_id, causing just the
    2161              :  * corresponding switch case to be executed.
    2162              :  *
    2163              :  * If-conditions in this function can be more complex than a single *Matches
    2164              :  * function call in one of two ways (but not both!).  They can be OR's
    2165              :  * of *Matches calls, such as
    2166              :  *  else if (Matches("ALTER", "VIEW", MatchAny, "ALTER", MatchAny) ||
    2167              :  *           Matches("ALTER", "VIEW", MatchAny, "ALTER", "COLUMN", MatchAny))
    2168              :  * or they can be a *Matches call AND'ed with some other condition, e.g.
    2169              :  *  else if (Matches("CREATE", "PUBLICATION", MatchAny, "FOR", "TABLE", MatchAny) &&
    2170              :  *           !ends_with(prev_wd, ','))
    2171              :  * The former case is transformed into multiple tcpatterns[] entries and
    2172              :  * multiple case labels for the same bit of code.  The latter case is
    2173              :  * transformed into a case label and a contained if-statement.
    2174              :  *
    2175              :  * This is split out of psql_completion() primarily to separate code that
    2176              :  * gen_tabcomplete.pl should process from code that it should not, although
    2177              :  * doing so also helps to avoid extra indentation of this code.
    2178              :  *
    2179              :  * Returns a matches list, or NULL if no match.
    2180              :  */
    2181              : static char **
    2182           58 : match_previous_words(int pattern_id,
    2183              :                      const char *text, int start, int end,
    2184              :                      char **previous_words, int previous_words_count)
    2185              : {
    2186              :     /* This is the variable we'll return. */
    2187           58 :     char      **matches = NULL;
    2188              : 
    2189              :     /* Dummy statement, allowing all the match rules to look like "else if" */
    2190              :     if (0)
    2191              :     {
    2192              :         /* skip */
    2193              :     }
    2194              : 
    2195              :     /* gen_tabcomplete.pl begins special processing here */
    2196           58 :     /* BEGIN GEN_TABCOMPLETE */
    2197              : 
    2198              : /* CREATE */
    2199              :     /* complete with something you can create */
    2200            1 :     else if (TailMatches("CREATE"))
    2201              :     {
    2202              :         /* only some object types can be created as part of CREATE SCHEMA */
    2203            1 :         if (HeadMatches("CREATE", "SCHEMA"))
    2204            0 :             COMPLETE_WITH("TABLE", "VIEW", "INDEX", "SEQUENCE", "TRIGGER",
    2205              :             /* for INDEX and TABLE/SEQUENCE, respectively */
    2206              :                           "UNIQUE", "UNLOGGED");
    2207              :         else
    2208            1 :             COMPLETE_WITH_GENERATOR(create_command_generator);
    2209              :     }
    2210              :     /* complete with something you can create or replace */
    2211            1 :     else if (TailMatches("CREATE", "OR", "REPLACE"))
    2212            0 :         COMPLETE_WITH("FUNCTION", "PROCEDURE", "LANGUAGE", "RULE", "VIEW",
    2213              :                       "AGGREGATE", "TRANSFORM", "TRIGGER");
    2214              : 
    2215              : /* DROP, but not DROP embedded in other commands */
    2216              :     /* complete with something you can drop */
    2217            0 :     else if (Matches("DROP"))
    2218            1 :         COMPLETE_WITH_GENERATOR(drop_command_generator);
    2219              : 
    2220              : /* ALTER */
    2221              : 
    2222              :     /* ALTER TABLE */
    2223            1 :     else if (Matches("ALTER", "TABLE"))
    2224            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_tables,
    2225              :                                         "ALL IN TABLESPACE");
    2226              : 
    2227              :     /* ALTER something */
    2228            0 :     else if (Matches("ALTER"))
    2229            0 :         COMPLETE_WITH_GENERATOR(alter_command_generator);
    2230              :     /* ALTER TABLE,INDEX,MATERIALIZED VIEW ALL IN TABLESPACE xxx */
    2231            0 :     else if (TailMatches("ALL", "IN", "TABLESPACE", MatchAny))
    2232            0 :         COMPLETE_WITH("SET TABLESPACE", "OWNED BY");
    2233              :     /* ALTER TABLE,INDEX,MATERIALIZED VIEW ALL IN TABLESPACE xxx OWNED BY */
    2234            0 :     else if (TailMatches("ALL", "IN", "TABLESPACE", MatchAny, "OWNED", "BY"))
    2235            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_roles);
    2236              :     /* ALTER TABLE,INDEX,MATERIALIZED VIEW ALL IN TABLESPACE xxx OWNED BY xxx */
    2237            0 :     else if (TailMatches("ALL", "IN", "TABLESPACE", MatchAny, "OWNED", "BY", MatchAny))
    2238            0 :         COMPLETE_WITH("SET TABLESPACE");
    2239              :     /* ALTER AGGREGATE,FUNCTION,PROCEDURE,ROUTINE <name> */
    2240            0 :     else if (Matches("ALTER", "AGGREGATE|FUNCTION|PROCEDURE|ROUTINE", MatchAny))
    2241            0 :         COMPLETE_WITH("(");
    2242              :     /* ALTER AGGREGATE <name> (...) */
    2243            0 :     else if (Matches("ALTER", "AGGREGATE", MatchAny, MatchAny))
    2244              :     {
    2245            0 :         if (ends_with(prev_wd, ')'))
    2246            0 :             COMPLETE_WITH("OWNER TO", "RENAME TO", "SET SCHEMA");
    2247              :         else
    2248            0 :             COMPLETE_WITH_FUNCTION_ARG(prev2_wd);
    2249              :     }
    2250              :     /* ALTER FUNCTION <name> (...) */
    2251            0 :     else if (Matches("ALTER", "FUNCTION", MatchAny, MatchAny))
    2252              :     {
    2253            0 :         if (ends_with(prev_wd, ')'))
    2254            0 :             COMPLETE_WITH(Alter_function_options);
    2255              :         else
    2256            0 :             COMPLETE_WITH_FUNCTION_ARG(prev2_wd);
    2257              :     }
    2258              :     /* ALTER PROCEDURE <name> (...) */
    2259            0 :     else if (Matches("ALTER", "PROCEDURE", MatchAny, MatchAny))
    2260              :     {
    2261            0 :         if (ends_with(prev_wd, ')'))
    2262            0 :             COMPLETE_WITH(Alter_procedure_options);
    2263              :         else
    2264            0 :             COMPLETE_WITH_FUNCTION_ARG(prev2_wd);
    2265              :     }
    2266              :     /* ALTER ROUTINE <name> (...) */
    2267            0 :     else if (Matches("ALTER", "ROUTINE", MatchAny, MatchAny))
    2268              :     {
    2269            0 :         if (ends_with(prev_wd, ')'))
    2270            0 :             COMPLETE_WITH(Alter_routine_options);
    2271              :         else
    2272            0 :             COMPLETE_WITH_FUNCTION_ARG(prev2_wd);
    2273              :     }
    2274              :     /* ALTER FUNCTION|ROUTINE <name> (...) PARALLEL */
    2275            0 :     else if (Matches("ALTER", "FUNCTION|ROUTINE", MatchAny, MatchAny, "PARALLEL"))
    2276            0 :         COMPLETE_WITH("RESTRICTED", "SAFE", "UNSAFE");
    2277              :     /* ALTER FUNCTION|PROCEDURE|ROUTINE <name> (...) [EXTERNAL] SECURITY */
    2278            0 :     else if (Matches("ALTER", "FUNCTION|PROCEDURE|ROUTINE", MatchAny, MatchAny, "SECURITY") ||
    2279              :              Matches("ALTER", "FUNCTION|PROCEDURE|ROUTINE", MatchAny, MatchAny, "EXTERNAL", "SECURITY"))
    2280            0 :         COMPLETE_WITH("DEFINER", "INVOKER");
    2281              :     /* ALTER FUNCTION|PROCEDURE|ROUTINE <name> (...) RESET */
    2282            0 :     else if (Matches("ALTER", "FUNCTION|PROCEDURE|ROUTINE", MatchAny, MatchAny, "RESET"))
    2283            0 :         COMPLETE_WITH_QUERY_VERBATIM_PLUS(Query_for_list_of_set_vars,
    2284              :                                           "ALL");
    2285              :     /* ALTER FUNCTION|PROCEDURE|ROUTINE <name> (...) SET */
    2286            0 :     else if (Matches("ALTER", "FUNCTION|PROCEDURE|ROUTINE", MatchAny, MatchAny, "SET"))
    2287            0 :         COMPLETE_WITH_QUERY_VERBATIM_PLUS(Query_for_list_of_set_vars,
    2288              :                                           "SCHEMA");
    2289              : 
    2290              :     /* ALTER PUBLICATION <name> */
    2291            0 :     else if (Matches("ALTER", "PUBLICATION", MatchAny))
    2292            0 :         COMPLETE_WITH("ADD", "DROP", "OWNER TO", "RENAME TO", "SET");
    2293              :     /* ALTER PUBLICATION <name> ADD */
    2294            0 :     else if (Matches("ALTER", "PUBLICATION", MatchAny, "ADD"))
    2295            0 :         COMPLETE_WITH("TABLES IN SCHEMA", "TABLE");
    2296            0 :     else if (Matches("ALTER", "PUBLICATION", MatchAny, "ADD|SET", "TABLE"))
    2297            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables);
    2298            0 :     else if (HeadMatches("ALTER", "PUBLICATION", MatchAny, "ADD|SET", "TABLE") &&
    2299            0 :              ends_with(prev_wd, ','))
    2300            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables);
    2301              : 
    2302              :     /*
    2303              :      * "ALTER PUBLICATION <name> SET TABLE <name> WHERE (" - complete with
    2304              :      * table attributes
    2305              :      *
    2306              :      * "ALTER PUBLICATION <name> ADD TABLE <name> WHERE (" - complete with
    2307              :      * table attributes
    2308              :      */
    2309            0 :     else if (Matches("ALTER", "PUBLICATION", MatchAny, MatchAnyN, "WHERE"))
    2310            0 :         COMPLETE_WITH("(");
    2311            0 :     else if (Matches("ALTER", "PUBLICATION", MatchAny, MatchAnyN, "WHERE", "("))
    2312            0 :         COMPLETE_WITH_ATTR(prev3_wd);
    2313            0 :     else if (HeadMatches("ALTER", "PUBLICATION", MatchAny, "ADD|SET", "TABLE") &&
    2314            0 :              !TailMatches("WHERE", "(*)"))
    2315            0 :         COMPLETE_WITH(",", "WHERE (");
    2316            0 :     else if (HeadMatches("ALTER", "PUBLICATION", MatchAny, "ADD|SET", "TABLE"))
    2317            0 :         COMPLETE_WITH(",");
    2318              :     /* ALTER PUBLICATION <name> DROP */
    2319            0 :     else if (Matches("ALTER", "PUBLICATION", MatchAny, "DROP"))
    2320            0 :         COMPLETE_WITH("TABLES IN SCHEMA", "TABLE");
    2321              :     /* ALTER PUBLICATION <name> SET */
    2322            0 :     else if (Matches("ALTER", "PUBLICATION", MatchAny, "SET"))
    2323            0 :         COMPLETE_WITH("(", "TABLES IN SCHEMA", "TABLE");
    2324            0 :     else if (Matches("ALTER", "PUBLICATION", MatchAny, "ADD|DROP|SET", "TABLES", "IN", "SCHEMA"))
    2325            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_schemas
    2326              :                                  " AND nspname NOT LIKE E'pg\\\\_%%'",
    2327              :                                  "CURRENT_SCHEMA");
    2328              :     /* ALTER PUBLICATION <name> SET ( */
    2329            0 :     else if (Matches("ALTER", "PUBLICATION", MatchAny, MatchAnyN, "SET", "("))
    2330            0 :         COMPLETE_WITH("publish", "publish_generated_columns", "publish_via_partition_root");
    2331              :     /* ALTER SUBSCRIPTION <name> */
    2332            0 :     else if (Matches("ALTER", "SUBSCRIPTION", MatchAny))
    2333            0 :         COMPLETE_WITH("CONNECTION", "ENABLE", "DISABLE", "OWNER TO",
    2334              :                       "RENAME TO", "REFRESH PUBLICATION", "REFRESH SEQUENCES",
    2335              :                       "SET", "SKIP (", "ADD PUBLICATION", "DROP PUBLICATION");
    2336              :     /* ALTER SUBSCRIPTION <name> REFRESH */
    2337            0 :     else if (Matches("ALTER", "SUBSCRIPTION", MatchAny, MatchAnyN, "REFRESH"))
    2338            0 :         COMPLETE_WITH("PUBLICATION", "SEQUENCES");
    2339              :     /* ALTER SUBSCRIPTION <name> REFRESH PUBLICATION WITH ( */
    2340            0 :     else if (Matches("ALTER", "SUBSCRIPTION", MatchAny, MatchAnyN, "REFRESH", "PUBLICATION", "WITH", "("))
    2341            0 :         COMPLETE_WITH("copy_data");
    2342              :     /* ALTER SUBSCRIPTION <name> SET */
    2343            0 :     else if (Matches("ALTER", "SUBSCRIPTION", MatchAny, "SET"))
    2344            0 :         COMPLETE_WITH("(", "PUBLICATION");
    2345              :     /* ALTER SUBSCRIPTION <name> SET ( */
    2346            0 :     else if (Matches("ALTER", "SUBSCRIPTION", MatchAny, MatchAnyN, "SET", "("))
    2347            0 :         COMPLETE_WITH("binary", "disable_on_error", "failover",
    2348              :                       "max_retention_duration", "origin",
    2349              :                       "password_required", "retain_dead_tuples",
    2350              :                       "run_as_owner", "slot_name", "streaming",
    2351              :                       "synchronous_commit", "two_phase");
    2352              :     /* ALTER SUBSCRIPTION <name> SKIP ( */
    2353            0 :     else if (Matches("ALTER", "SUBSCRIPTION", MatchAny, MatchAnyN, "SKIP", "("))
    2354            0 :         COMPLETE_WITH("lsn");
    2355              :     /* ALTER SUBSCRIPTION <name> SET PUBLICATION */
    2356            0 :     else if (Matches("ALTER", "SUBSCRIPTION", MatchAny, MatchAnyN, "SET", "PUBLICATION"))
    2357              :     {
    2358              :         /* complete with nothing here as this refers to remote publications */
    2359              :     }
    2360              :     /* ALTER SUBSCRIPTION <name> ADD|DROP|SET PUBLICATION <name> */
    2361            0 :     else if (Matches("ALTER", "SUBSCRIPTION", MatchAny, MatchAnyN,
    2362              :                      "ADD|DROP|SET", "PUBLICATION", MatchAny))
    2363            0 :         COMPLETE_WITH("WITH (");
    2364              :     /* ALTER SUBSCRIPTION <name> ADD|DROP|SET PUBLICATION <name> WITH ( */
    2365            0 :     else if (Matches("ALTER", "SUBSCRIPTION", MatchAny, MatchAnyN,
    2366              :                      "ADD|DROP|SET", "PUBLICATION", MatchAny, "WITH", "("))
    2367            0 :         COMPLETE_WITH("copy_data", "refresh");
    2368              : 
    2369              :     /* ALTER SCHEMA <name> */
    2370            0 :     else if (Matches("ALTER", "SCHEMA", MatchAny))
    2371            0 :         COMPLETE_WITH("OWNER TO", "RENAME TO");
    2372              : 
    2373              :     /* ALTER COLLATION <name> */
    2374            0 :     else if (Matches("ALTER", "COLLATION", MatchAny))
    2375            0 :         COMPLETE_WITH("OWNER TO", "REFRESH VERSION", "RENAME TO", "SET SCHEMA");
    2376              : 
    2377              :     /* ALTER CONVERSION <name> */
    2378            0 :     else if (Matches("ALTER", "CONVERSION", MatchAny))
    2379            0 :         COMPLETE_WITH("OWNER TO", "RENAME TO", "SET SCHEMA");
    2380              : 
    2381              :     /* ALTER DATABASE <name> */
    2382            0 :     else if (Matches("ALTER", "DATABASE", MatchAny))
    2383            0 :         COMPLETE_WITH("RESET", "SET", "OWNER TO", "REFRESH COLLATION VERSION", "RENAME TO",
    2384              :                       "IS_TEMPLATE", "ALLOW_CONNECTIONS",
    2385              :                       "CONNECTION LIMIT");
    2386              : 
    2387              :     /* ALTER DATABASE <name> RESET */
    2388            0 :     else if (Matches("ALTER", "DATABASE", MatchAny, "RESET"))
    2389              :     {
    2390            0 :         set_completion_reference(prev2_wd);
    2391            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_database_vars, "ALL");
    2392              :     }
    2393              : 
    2394              :     /* ALTER DATABASE <name> SET TABLESPACE */
    2395            0 :     else if (Matches("ALTER", "DATABASE", MatchAny, "SET", "TABLESPACE"))
    2396            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_tablespaces);
    2397              : 
    2398              :     /* ALTER EVENT TRIGGER */
    2399            0 :     else if (Matches("ALTER", "EVENT", "TRIGGER"))
    2400            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_event_triggers);
    2401              : 
    2402              :     /* ALTER EVENT TRIGGER <name> */
    2403            0 :     else if (Matches("ALTER", "EVENT", "TRIGGER", MatchAny))
    2404            0 :         COMPLETE_WITH("DISABLE", "ENABLE", "OWNER TO", "RENAME TO");
    2405              : 
    2406              :     /* ALTER EVENT TRIGGER <name> ENABLE */
    2407            0 :     else if (Matches("ALTER", "EVENT", "TRIGGER", MatchAny, "ENABLE"))
    2408            0 :         COMPLETE_WITH("REPLICA", "ALWAYS");
    2409              : 
    2410              :     /* ALTER EXTENSION <name> */
    2411            0 :     else if (Matches("ALTER", "EXTENSION", MatchAny))
    2412            0 :         COMPLETE_WITH("ADD", "DROP", "UPDATE", "SET SCHEMA");
    2413              : 
    2414              :     /* ALTER EXTENSION <name> ADD|DROP */
    2415            0 :     else if (Matches("ALTER", "EXTENSION", MatchAny, "ADD|DROP"))
    2416            0 :         COMPLETE_WITH("ACCESS METHOD", "AGGREGATE", "CAST", "COLLATION",
    2417              :                       "CONVERSION", "DOMAIN", "EVENT TRIGGER", "FOREIGN",
    2418              :                       "FUNCTION", "MATERIALIZED VIEW", "OPERATOR",
    2419              :                       "LANGUAGE", "PROCEDURE", "ROUTINE", "SCHEMA",
    2420              :                       "SEQUENCE", "SERVER", "TABLE", "TEXT SEARCH",
    2421              :                       "TRANSFORM FOR", "TYPE", "VIEW");
    2422              : 
    2423              :     /* ALTER EXTENSION <name> ADD|DROP FOREIGN */
    2424            0 :     else if (Matches("ALTER", "EXTENSION", MatchAny, "ADD|DROP", "FOREIGN"))
    2425            0 :         COMPLETE_WITH("DATA WRAPPER", "TABLE");
    2426              : 
    2427              :     /* ALTER EXTENSION <name> ADD|DROP OPERATOR */
    2428            0 :     else if (Matches("ALTER", "EXTENSION", MatchAny, "ADD|DROP", "OPERATOR"))
    2429            0 :         COMPLETE_WITH("CLASS", "FAMILY");
    2430              : 
    2431              :     /* ALTER EXTENSION <name> ADD|DROP TEXT SEARCH */
    2432            0 :     else if (Matches("ALTER", "EXTENSION", MatchAny, "ADD|DROP", "TEXT", "SEARCH"))
    2433            0 :         COMPLETE_WITH("CONFIGURATION", "DICTIONARY", "PARSER", "TEMPLATE");
    2434              : 
    2435              :     /* ALTER EXTENSION <name> UPDATE */
    2436            0 :     else if (Matches("ALTER", "EXTENSION", MatchAny, "UPDATE"))
    2437            0 :         COMPLETE_WITH("TO");
    2438              : 
    2439              :     /* ALTER EXTENSION <name> UPDATE TO */
    2440            0 :     else if (Matches("ALTER", "EXTENSION", MatchAny, "UPDATE", "TO"))
    2441              :     {
    2442            0 :         set_completion_reference(prev3_wd);
    2443            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_available_extension_versions);
    2444              :     }
    2445              : 
    2446              :     /* ALTER FOREIGN */
    2447            0 :     else if (Matches("ALTER", "FOREIGN"))
    2448            0 :         COMPLETE_WITH("DATA WRAPPER", "TABLE");
    2449              : 
    2450              :     /* ALTER FOREIGN DATA WRAPPER <name> */
    2451            0 :     else if (Matches("ALTER", "FOREIGN", "DATA", "WRAPPER", MatchAny))
    2452            0 :         COMPLETE_WITH("HANDLER", "VALIDATOR", "NO",
    2453              :                       "OPTIONS", "OWNER TO", "RENAME TO");
    2454            0 :     else if (Matches("ALTER", "FOREIGN", "DATA", "WRAPPER", MatchAny, "NO"))
    2455            0 :         COMPLETE_WITH("HANDLER", "VALIDATOR");
    2456              : 
    2457              :     /* ALTER FOREIGN TABLE <name> */
    2458            0 :     else if (Matches("ALTER", "FOREIGN", "TABLE", MatchAny))
    2459            0 :         COMPLETE_WITH("ADD", "ALTER", "DISABLE TRIGGER", "DROP", "ENABLE",
    2460              :                       "INHERIT", "NO INHERIT", "OPTIONS", "OWNER TO",
    2461              :                       "RENAME", "SET", "VALIDATE CONSTRAINT");
    2462              : 
    2463              :     /* ALTER INDEX */
    2464            0 :     else if (Matches("ALTER", "INDEX"))
    2465            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_indexes,
    2466              :                                         "ALL IN TABLESPACE");
    2467              :     /* ALTER INDEX <name> */
    2468            0 :     else if (Matches("ALTER", "INDEX", MatchAny))
    2469            0 :         COMPLETE_WITH("ALTER COLUMN", "OWNER TO", "RENAME TO", "SET",
    2470              :                       "RESET", "ATTACH PARTITION",
    2471              :                       "DEPENDS ON EXTENSION", "NO DEPENDS ON EXTENSION");
    2472            0 :     else if (Matches("ALTER", "INDEX", MatchAny, "ATTACH"))
    2473            0 :         COMPLETE_WITH("PARTITION");
    2474            0 :     else if (Matches("ALTER", "INDEX", MatchAny, "ATTACH", "PARTITION"))
    2475            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexes);
    2476              :     /* ALTER INDEX <name> ALTER */
    2477            0 :     else if (Matches("ALTER", "INDEX", MatchAny, "ALTER"))
    2478            0 :         COMPLETE_WITH("COLUMN");
    2479              :     /* ALTER INDEX <name> ALTER COLUMN */
    2480            0 :     else if (Matches("ALTER", "INDEX", MatchAny, "ALTER", "COLUMN"))
    2481              :     {
    2482            0 :         set_completion_reference(prev3_wd);
    2483            0 :         COMPLETE_WITH_SCHEMA_QUERY_VERBATIM(Query_for_list_of_attribute_numbers);
    2484              :     }
    2485              :     /* ALTER INDEX <name> ALTER COLUMN <colnum> */
    2486            0 :     else if (Matches("ALTER", "INDEX", MatchAny, "ALTER", "COLUMN", MatchAny))
    2487            0 :         COMPLETE_WITH("SET STATISTICS");
    2488              :     /* ALTER INDEX <name> ALTER COLUMN <colnum> SET */
    2489            0 :     else if (Matches("ALTER", "INDEX", MatchAny, "ALTER", "COLUMN", MatchAny, "SET"))
    2490            0 :         COMPLETE_WITH("STATISTICS");
    2491              :     /* ALTER INDEX <name> ALTER COLUMN <colnum> SET STATISTICS */
    2492            0 :     else if (Matches("ALTER", "INDEX", MatchAny, "ALTER", "COLUMN", MatchAny, "SET", "STATISTICS"))
    2493              :     {
    2494              :         /* Enforce no completion here, as an integer has to be specified */
    2495              :     }
    2496              :     /* ALTER INDEX <name> SET */
    2497            0 :     else if (Matches("ALTER", "INDEX", MatchAny, "SET"))
    2498            0 :         COMPLETE_WITH("(", "TABLESPACE");
    2499              :     /* ALTER INDEX <name> RESET */
    2500            0 :     else if (Matches("ALTER", "INDEX", MatchAny, "RESET"))
    2501            0 :         COMPLETE_WITH("(");
    2502              :     /* ALTER INDEX <foo> SET|RESET ( */
    2503            0 :     else if (Matches("ALTER", "INDEX", MatchAny, "RESET", "("))
    2504            0 :         COMPLETE_WITH("fillfactor",
    2505              :                       "deduplicate_items",    /* BTREE */
    2506              :                       "fastupdate", "gin_pending_list_limit",   /* GIN */
    2507              :                       "buffering",    /* GiST */
    2508              :                       "pages_per_range", "autosummarize"    /* BRIN */
    2509              :             );
    2510            0 :     else if (Matches("ALTER", "INDEX", MatchAny, "SET", "("))
    2511            0 :         COMPLETE_WITH("fillfactor =",
    2512              :                       "deduplicate_items =",  /* BTREE */
    2513              :                       "fastupdate =", "gin_pending_list_limit =",   /* GIN */
    2514              :                       "buffering =",  /* GiST */
    2515              :                       "pages_per_range =", "autosummarize ="    /* BRIN */
    2516              :             );
    2517            0 :     else if (Matches("ALTER", "INDEX", MatchAny, "NO", "DEPENDS"))
    2518            0 :         COMPLETE_WITH("ON EXTENSION");
    2519            0 :     else if (Matches("ALTER", "INDEX", MatchAny, "DEPENDS"))
    2520            0 :         COMPLETE_WITH("ON EXTENSION");
    2521              : 
    2522              :     /* ALTER LANGUAGE <name> */
    2523            0 :     else if (Matches("ALTER", "LANGUAGE", MatchAny))
    2524            0 :         COMPLETE_WITH("OWNER TO", "RENAME TO");
    2525              : 
    2526              :     /* ALTER LARGE OBJECT <oid> */
    2527            0 :     else if (Matches("ALTER", "LARGE", "OBJECT", MatchAny))
    2528            0 :         COMPLETE_WITH("OWNER TO");
    2529              : 
    2530              :     /* ALTER MATERIALIZED VIEW */
    2531            0 :     else if (Matches("ALTER", "MATERIALIZED", "VIEW"))
    2532            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_matviews,
    2533              :                                         "ALL IN TABLESPACE");
    2534              : 
    2535              :     /* ALTER USER,ROLE <name> */
    2536            0 :     else if (Matches("ALTER", "USER|ROLE", MatchAny) &&
    2537            0 :              !TailMatches("USER", "MAPPING"))
    2538            0 :         COMPLETE_WITH("BYPASSRLS", "CONNECTION LIMIT", "CREATEDB", "CREATEROLE",
    2539              :                       "ENCRYPTED PASSWORD", "INHERIT", "LOGIN", "NOBYPASSRLS",
    2540              :                       "NOCREATEDB", "NOCREATEROLE", "NOINHERIT",
    2541              :                       "NOLOGIN", "NOREPLICATION", "NOSUPERUSER", "PASSWORD",
    2542              :                       "RENAME TO", "REPLICATION", "RESET", "SET", "SUPERUSER",
    2543              :                       "VALID UNTIL", "WITH");
    2544              : 
    2545              :     /* ALTER USER,ROLE <name> RESET */
    2546            0 :     else if (Matches("ALTER", "USER|ROLE", MatchAny, "RESET"))
    2547              :     {
    2548            0 :         set_completion_reference(prev2_wd);
    2549            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_user_vars, "ALL");
    2550              :     }
    2551              : 
    2552              :     /* ALTER USER,ROLE <name> WITH */
    2553            0 :     else if (Matches("ALTER", "USER|ROLE", MatchAny, "WITH"))
    2554              :         /* Similar to the above, but don't complete "WITH" again. */
    2555            0 :         COMPLETE_WITH("BYPASSRLS", "CONNECTION LIMIT", "CREATEDB", "CREATEROLE",
    2556              :                       "ENCRYPTED PASSWORD", "INHERIT", "LOGIN", "NOBYPASSRLS",
    2557              :                       "NOCREATEDB", "NOCREATEROLE", "NOINHERIT",
    2558              :                       "NOLOGIN", "NOREPLICATION", "NOSUPERUSER", "PASSWORD",
    2559              :                       "RENAME TO", "REPLICATION", "RESET", "SET", "SUPERUSER",
    2560              :                       "VALID UNTIL");
    2561              : 
    2562              :     /* ALTER DEFAULT PRIVILEGES */
    2563            0 :     else if (Matches("ALTER", "DEFAULT", "PRIVILEGES"))
    2564            0 :         COMPLETE_WITH("FOR", "GRANT", "IN SCHEMA", "REVOKE");
    2565              :     /* ALTER DEFAULT PRIVILEGES FOR */
    2566            0 :     else if (Matches("ALTER", "DEFAULT", "PRIVILEGES", "FOR"))
    2567            0 :         COMPLETE_WITH("ROLE");
    2568              :     /* ALTER DEFAULT PRIVILEGES IN */
    2569            0 :     else if (Matches("ALTER", "DEFAULT", "PRIVILEGES", "IN"))
    2570            0 :         COMPLETE_WITH("SCHEMA");
    2571              :     /* ALTER DEFAULT PRIVILEGES FOR ROLE|USER ... */
    2572            0 :     else if (Matches("ALTER", "DEFAULT", "PRIVILEGES", "FOR", "ROLE|USER",
    2573              :                      MatchAny))
    2574            0 :         COMPLETE_WITH("GRANT", "REVOKE", "IN SCHEMA");
    2575              :     /* ALTER DEFAULT PRIVILEGES IN SCHEMA ... */
    2576            0 :     else if (Matches("ALTER", "DEFAULT", "PRIVILEGES", "IN", "SCHEMA",
    2577              :                      MatchAny))
    2578            0 :         COMPLETE_WITH("GRANT", "REVOKE", "FOR ROLE");
    2579              :     /* ALTER DEFAULT PRIVILEGES IN SCHEMA ... FOR */
    2580            0 :     else if (Matches("ALTER", "DEFAULT", "PRIVILEGES", "IN", "SCHEMA",
    2581              :                      MatchAny, "FOR"))
    2582            0 :         COMPLETE_WITH("ROLE");
    2583              :     /* ALTER DEFAULT PRIVILEGES FOR ROLE|USER ... IN SCHEMA ... */
    2584              :     /* ALTER DEFAULT PRIVILEGES IN SCHEMA ... FOR ROLE|USER ... */
    2585            0 :     else if (Matches("ALTER", "DEFAULT", "PRIVILEGES", "FOR", "ROLE|USER",
    2586              :                      MatchAny, "IN", "SCHEMA", MatchAny) ||
    2587              :              Matches("ALTER", "DEFAULT", "PRIVILEGES", "IN", "SCHEMA",
    2588              :                      MatchAny, "FOR", "ROLE|USER", MatchAny))
    2589            0 :         COMPLETE_WITH("GRANT", "REVOKE");
    2590              :     /* ALTER DOMAIN <name> */
    2591            0 :     else if (Matches("ALTER", "DOMAIN", MatchAny))
    2592            0 :         COMPLETE_WITH("ADD", "DROP", "OWNER TO", "RENAME", "SET",
    2593              :                       "VALIDATE CONSTRAINT");
    2594              :     /* ALTER DOMAIN <sth> ADD */
    2595            0 :     else if (Matches("ALTER", "DOMAIN", MatchAny, "ADD"))
    2596            0 :         COMPLETE_WITH("CONSTRAINT", "NOT NULL", "CHECK (");
    2597              :     /* ALTER DOMAIN <sth> ADD CONSTRAINT <sth> */
    2598            0 :     else if (Matches("ALTER", "DOMAIN", MatchAny, "ADD", "CONSTRAINT", MatchAny))
    2599            0 :         COMPLETE_WITH("NOT NULL", "CHECK (");
    2600              :     /* ALTER DOMAIN <sth> DROP */
    2601            0 :     else if (Matches("ALTER", "DOMAIN", MatchAny, "DROP"))
    2602            0 :         COMPLETE_WITH("CONSTRAINT", "DEFAULT", "NOT NULL");
    2603              :     /* ALTER DOMAIN <sth> DROP|RENAME|VALIDATE CONSTRAINT */
    2604            0 :     else if (Matches("ALTER", "DOMAIN", MatchAny, "DROP|RENAME|VALIDATE", "CONSTRAINT"))
    2605              :     {
    2606            0 :         set_completion_reference(prev3_wd);
    2607            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_constraint_of_type);
    2608              :     }
    2609              :     /* ALTER DOMAIN <sth> RENAME */
    2610            0 :     else if (Matches("ALTER", "DOMAIN", MatchAny, "RENAME"))
    2611            0 :         COMPLETE_WITH("CONSTRAINT", "TO");
    2612              :     /* ALTER DOMAIN <sth> RENAME CONSTRAINT <sth> */
    2613            0 :     else if (Matches("ALTER", "DOMAIN", MatchAny, "RENAME", "CONSTRAINT", MatchAny))
    2614            0 :         COMPLETE_WITH("TO");
    2615              : 
    2616              :     /* ALTER DOMAIN <sth> SET */
    2617            0 :     else if (Matches("ALTER", "DOMAIN", MatchAny, "SET"))
    2618            0 :         COMPLETE_WITH("DEFAULT", "NOT NULL", "SCHEMA");
    2619              :     /* ALTER SEQUENCE <name> */
    2620            0 :     else if (Matches("ALTER", "SEQUENCE", MatchAny))
    2621            0 :         COMPLETE_WITH("AS", "INCREMENT", "MINVALUE", "MAXVALUE", "RESTART",
    2622              :                       "START", "NO", "CACHE", "CYCLE", "SET", "OWNED BY",
    2623              :                       "OWNER TO", "RENAME TO");
    2624              :     /* ALTER SEQUENCE <name> AS */
    2625            0 :     else if (TailMatches("ALTER", "SEQUENCE", MatchAny, "AS"))
    2626            0 :         COMPLETE_WITH_CS("smallint", "integer", "bigint");
    2627              :     /* ALTER SEQUENCE <name> NO */
    2628            0 :     else if (Matches("ALTER", "SEQUENCE", MatchAny, "NO"))
    2629            0 :         COMPLETE_WITH("MINVALUE", "MAXVALUE", "CYCLE");
    2630              :     /* ALTER SEQUENCE <name> SET */
    2631            0 :     else if (Matches("ALTER", "SEQUENCE", MatchAny, "SET"))
    2632            0 :         COMPLETE_WITH("SCHEMA", "LOGGED", "UNLOGGED");
    2633              :     /* ALTER SERVER <name> */
    2634            0 :     else if (Matches("ALTER", "SERVER", MatchAny))
    2635            0 :         COMPLETE_WITH("VERSION", "OPTIONS", "OWNER TO", "RENAME TO");
    2636              :     /* ALTER SERVER <name> VERSION <version> */
    2637            0 :     else if (Matches("ALTER", "SERVER", MatchAny, "VERSION", MatchAny))
    2638            0 :         COMPLETE_WITH("OPTIONS");
    2639              :     /* ALTER SYSTEM SET, RESET, RESET ALL */
    2640            0 :     else if (Matches("ALTER", "SYSTEM"))
    2641            0 :         COMPLETE_WITH("SET", "RESET");
    2642            0 :     else if (Matches("ALTER", "SYSTEM", "SET|RESET"))
    2643            0 :         COMPLETE_WITH_QUERY_VERBATIM_PLUS(Query_for_list_of_alter_system_set_vars,
    2644              :                                           "ALL");
    2645            0 :     else if (Matches("ALTER", "SYSTEM", "SET", MatchAny))
    2646            0 :         COMPLETE_WITH("TO");
    2647              :     /* ALTER VIEW <name> */
    2648            0 :     else if (Matches("ALTER", "VIEW", MatchAny))
    2649            0 :         COMPLETE_WITH("ALTER COLUMN", "OWNER TO", "RENAME", "RESET", "SET");
    2650              :     /* ALTER VIEW xxx RENAME */
    2651            0 :     else if (Matches("ALTER", "VIEW", MatchAny, "RENAME"))
    2652            0 :         COMPLETE_WITH_ATTR_PLUS(prev2_wd, "COLUMN", "TO");
    2653            0 :     else if (Matches("ALTER", "VIEW", MatchAny, "ALTER|RENAME", "COLUMN"))
    2654            0 :         COMPLETE_WITH_ATTR(prev3_wd);
    2655              :     /* ALTER VIEW xxx ALTER [ COLUMN ] yyy */
    2656            0 :     else if (Matches("ALTER", "VIEW", MatchAny, "ALTER", MatchAny) ||
    2657              :              Matches("ALTER", "VIEW", MatchAny, "ALTER", "COLUMN", MatchAny))
    2658            0 :         COMPLETE_WITH("SET DEFAULT", "DROP DEFAULT");
    2659              :     /* ALTER VIEW xxx RENAME yyy */
    2660            0 :     else if (Matches("ALTER", "VIEW", MatchAny, "RENAME", MatchAnyExcept("TO")))
    2661            0 :         COMPLETE_WITH("TO");
    2662              :     /* ALTER VIEW xxx RENAME COLUMN yyy */
    2663            0 :     else if (Matches("ALTER", "VIEW", MatchAny, "RENAME", "COLUMN", MatchAnyExcept("TO")))
    2664            0 :         COMPLETE_WITH("TO");
    2665              :     /* ALTER VIEW xxx RESET ( */
    2666            0 :     else if (Matches("ALTER", "VIEW", MatchAny, "RESET"))
    2667            0 :         COMPLETE_WITH("(");
    2668              :     /* Complete ALTER VIEW xxx SET with "(" or "SCHEMA" */
    2669            0 :     else if (Matches("ALTER", "VIEW", MatchAny, "SET"))
    2670            0 :         COMPLETE_WITH("(", "SCHEMA");
    2671              :     /* ALTER VIEW xxx SET|RESET ( yyy [= zzz] ) */
    2672            0 :     else if (Matches("ALTER", "VIEW", MatchAny, "SET|RESET", "("))
    2673            0 :         COMPLETE_WITH_LIST(view_optional_parameters);
    2674            0 :     else if (Matches("ALTER", "VIEW", MatchAny, "SET", "(", MatchAny))
    2675            0 :         COMPLETE_WITH("=");
    2676            0 :     else if (Matches("ALTER", "VIEW", MatchAny, "SET", "(", "check_option", "="))
    2677            0 :         COMPLETE_WITH("local", "cascaded");
    2678            0 :     else if (Matches("ALTER", "VIEW", MatchAny, "SET", "(", "security_barrier|security_invoker", "="))
    2679            0 :         COMPLETE_WITH("true", "false");
    2680              : 
    2681              :     /* ALTER MATERIALIZED VIEW <name> */
    2682            0 :     else if (Matches("ALTER", "MATERIALIZED", "VIEW", MatchAny))
    2683            0 :         COMPLETE_WITH("ALTER COLUMN", "CLUSTER ON", "DEPENDS ON EXTENSION",
    2684              :                       "NO DEPENDS ON EXTENSION", "OWNER TO", "RENAME",
    2685              :                       "RESET (", "SET");
    2686              :     /* ALTER MATERIALIZED VIEW xxx RENAME */
    2687            0 :     else if (Matches("ALTER", "MATERIALIZED", "VIEW", MatchAny, "RENAME"))
    2688            0 :         COMPLETE_WITH_ATTR_PLUS(prev2_wd, "COLUMN", "TO");
    2689            0 :     else if (Matches("ALTER", "MATERIALIZED", "VIEW", MatchAny, "ALTER|RENAME", "COLUMN"))
    2690            0 :         COMPLETE_WITH_ATTR(prev3_wd);
    2691              :     /* ALTER MATERIALIZED VIEW xxx RENAME yyy */
    2692            0 :     else if (Matches("ALTER", "MATERIALIZED", "VIEW", MatchAny, "RENAME", MatchAnyExcept("TO")))
    2693            0 :         COMPLETE_WITH("TO");
    2694              :     /* ALTER MATERIALIZED VIEW xxx RENAME COLUMN yyy */
    2695            0 :     else if (Matches("ALTER", "MATERIALIZED", "VIEW", MatchAny, "RENAME", "COLUMN", MatchAnyExcept("TO")))
    2696            0 :         COMPLETE_WITH("TO");
    2697              :     /* ALTER MATERIALIZED VIEW xxx SET */
    2698            0 :     else if (Matches("ALTER", "MATERIALIZED", "VIEW", MatchAny, "SET"))
    2699            0 :         COMPLETE_WITH("(", "ACCESS METHOD", "SCHEMA", "TABLESPACE", "WITHOUT CLUSTER");
    2700              :     /* ALTER MATERIALIZED VIEW xxx SET ACCESS METHOD */
    2701            0 :     else if (Matches("ALTER", "MATERIALIZED", "VIEW", MatchAny, "SET", "ACCESS", "METHOD"))
    2702            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_table_access_methods);
    2703              : 
    2704              :     /* ALTER POLICY <name> */
    2705            0 :     else if (Matches("ALTER", "POLICY"))
    2706            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_policies);
    2707              :     /* ALTER POLICY <name> ON */
    2708            0 :     else if (Matches("ALTER", "POLICY", MatchAny))
    2709            0 :         COMPLETE_WITH("ON");
    2710              :     /* ALTER POLICY <name> ON <table> */
    2711            0 :     else if (Matches("ALTER", "POLICY", MatchAny, "ON"))
    2712              :     {
    2713            0 :         set_completion_reference(prev2_wd);
    2714            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables_for_policy);
    2715              :     }
    2716              :     /* ALTER POLICY <name> ON <table> - show options */
    2717            0 :     else if (Matches("ALTER", "POLICY", MatchAny, "ON", MatchAny))
    2718            0 :         COMPLETE_WITH("RENAME TO", "TO", "USING (", "WITH CHECK (");
    2719              :     /* ALTER POLICY <name> ON <table> TO <role> */
    2720            0 :     else if (Matches("ALTER", "POLICY", MatchAny, "ON", MatchAny, "TO"))
    2721            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_roles,
    2722              :                                  Keywords_for_list_of_grant_roles);
    2723              :     /* ALTER POLICY <name> ON <table> USING ( */
    2724            0 :     else if (Matches("ALTER", "POLICY", MatchAny, "ON", MatchAny, "USING"))
    2725            0 :         COMPLETE_WITH("(");
    2726              :     /* ALTER POLICY <name> ON <table> WITH CHECK ( */
    2727            0 :     else if (Matches("ALTER", "POLICY", MatchAny, "ON", MatchAny, "WITH", "CHECK"))
    2728            0 :         COMPLETE_WITH("(");
    2729              : 
    2730              :     /* ALTER RULE <name>, add ON */
    2731            0 :     else if (Matches("ALTER", "RULE", MatchAny))
    2732            0 :         COMPLETE_WITH("ON");
    2733              : 
    2734              :     /* If we have ALTER RULE <name> ON, then add the correct tablename */
    2735            0 :     else if (Matches("ALTER", "RULE", MatchAny, "ON"))
    2736              :     {
    2737            0 :         set_completion_reference(prev2_wd);
    2738            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables_for_rule);
    2739              :     }
    2740              : 
    2741              :     /* ALTER RULE <name> ON <name> */
    2742            0 :     else if (Matches("ALTER", "RULE", MatchAny, "ON", MatchAny))
    2743            0 :         COMPLETE_WITH("RENAME TO");
    2744              : 
    2745              :     /* ALTER STATISTICS <name> */
    2746            0 :     else if (Matches("ALTER", "STATISTICS", MatchAny))
    2747            0 :         COMPLETE_WITH("OWNER TO", "RENAME TO", "SET SCHEMA", "SET STATISTICS");
    2748              :     /* ALTER STATISTICS <name> SET */
    2749            0 :     else if (Matches("ALTER", "STATISTICS", MatchAny, "SET"))
    2750            0 :         COMPLETE_WITH("SCHEMA", "STATISTICS");
    2751              : 
    2752              :     /* ALTER TRIGGER <name>, add ON */
    2753            0 :     else if (Matches("ALTER", "TRIGGER", MatchAny))
    2754            0 :         COMPLETE_WITH("ON");
    2755              : 
    2756            0 :     else if (Matches("ALTER", "TRIGGER", MatchAny, "ON"))
    2757              :     {
    2758            0 :         set_completion_reference(prev2_wd);
    2759            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables_for_trigger);
    2760              :     }
    2761              : 
    2762              :     /* ALTER TRIGGER <name> ON <name> */
    2763            0 :     else if (Matches("ALTER", "TRIGGER", MatchAny, "ON", MatchAny))
    2764            0 :         COMPLETE_WITH("RENAME TO", "DEPENDS ON EXTENSION",
    2765              :                       "NO DEPENDS ON EXTENSION");
    2766              : 
    2767              :     /*
    2768              :      * If we detect ALTER TABLE <name>, suggest sub commands
    2769              :      */
    2770            0 :     else if (Matches("ALTER", "TABLE", MatchAny))
    2771            0 :         COMPLETE_WITH("ADD", "ALTER", "CLUSTER ON", "DISABLE", "DROP",
    2772              :                       "ENABLE", "INHERIT", "NO", "RENAME", "RESET",
    2773              :                       "OWNER TO", "SET", "VALIDATE CONSTRAINT",
    2774              :                       "REPLICA IDENTITY", "ATTACH PARTITION",
    2775              :                       "DETACH PARTITION", "FORCE ROW LEVEL SECURITY",
    2776              :                       "SPLIT PARTITION", "MERGE PARTITIONS (",
    2777              :                       "OF", "NOT OF");
    2778              :     /* ALTER TABLE xxx ADD */
    2779            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ADD"))
    2780              :     {
    2781              :         /*
    2782              :          * make sure to keep this list and the MatchAnyExcept() below in sync
    2783              :          */
    2784            0 :         COMPLETE_WITH("COLUMN", "CONSTRAINT", "CHECK (", "NOT NULL", "UNIQUE",
    2785              :                       "PRIMARY KEY", "EXCLUDE", "FOREIGN KEY");
    2786              :     }
    2787              :     /* ALTER TABLE xxx ADD [COLUMN] yyy */
    2788            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ADD", "COLUMN", MatchAny) ||
    2789              :              Matches("ALTER", "TABLE", MatchAny, "ADD", MatchAnyExcept("COLUMN|CONSTRAINT|CHECK|UNIQUE|PRIMARY|NOT|EXCLUDE|FOREIGN")))
    2790            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_datatypes);
    2791              :     /* ALTER TABLE xxx ADD CONSTRAINT yyy */
    2792            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ADD", "CONSTRAINT", MatchAny))
    2793            0 :         COMPLETE_WITH("CHECK (", "NOT NULL", "UNIQUE", "PRIMARY KEY", "EXCLUDE", "FOREIGN KEY");
    2794              :     /* ALTER TABLE xxx ADD NOT NULL */
    2795            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ADD", "NOT", "NULL"))
    2796            0 :         COMPLETE_WITH_ATTR(prev4_wd);
    2797            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ADD", "CONSTRAINT", MatchAny, "NOT", "NULL"))
    2798            0 :         COMPLETE_WITH_ATTR(prev6_wd);
    2799              :     /* ALTER TABLE xxx ADD [CONSTRAINT yyy] (PRIMARY KEY|UNIQUE) */
    2800            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ADD", "PRIMARY", "KEY") ||
    2801              :              Matches("ALTER", "TABLE", MatchAny, "ADD", "UNIQUE") ||
    2802              :              Matches("ALTER", "TABLE", MatchAny, "ADD", "CONSTRAINT", MatchAny, "PRIMARY", "KEY") ||
    2803              :              Matches("ALTER", "TABLE", MatchAny, "ADD", "CONSTRAINT", MatchAny, "UNIQUE"))
    2804            0 :         COMPLETE_WITH("(", "USING INDEX");
    2805              :     /* ALTER TABLE xxx ADD PRIMARY KEY USING INDEX */
    2806            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ADD", "PRIMARY", "KEY", "USING", "INDEX"))
    2807              :     {
    2808            0 :         set_completion_reference(prev6_wd);
    2809            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_unique_index_of_table);
    2810              :     }
    2811              :     /* ALTER TABLE xxx ADD UNIQUE USING INDEX */
    2812            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ADD", "UNIQUE", "USING", "INDEX"))
    2813              :     {
    2814            0 :         set_completion_reference(prev5_wd);
    2815            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_unique_index_of_table);
    2816              :     }
    2817              :     /* ALTER TABLE xxx ADD CONSTRAINT yyy PRIMARY KEY USING INDEX */
    2818            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ADD", "CONSTRAINT", MatchAny,
    2819              :                      "PRIMARY", "KEY", "USING", "INDEX"))
    2820              :     {
    2821            0 :         set_completion_reference(prev8_wd);
    2822            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_unique_index_of_table);
    2823              :     }
    2824              :     /* ALTER TABLE xxx ADD CONSTRAINT yyy UNIQUE USING INDEX */
    2825            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ADD", "CONSTRAINT", MatchAny,
    2826              :                      "UNIQUE", "USING", "INDEX"))
    2827              :     {
    2828            0 :         set_completion_reference(prev7_wd);
    2829            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_unique_index_of_table);
    2830              :     }
    2831              :     /* ALTER TABLE xxx ENABLE */
    2832            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ENABLE"))
    2833            0 :         COMPLETE_WITH("ALWAYS", "REPLICA", "ROW LEVEL SECURITY", "RULE",
    2834              :                       "TRIGGER");
    2835            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ENABLE", "REPLICA|ALWAYS"))
    2836            0 :         COMPLETE_WITH("RULE", "TRIGGER");
    2837            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ENABLE", "RULE"))
    2838              :     {
    2839            0 :         set_completion_reference(prev3_wd);
    2840            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_rule_of_table);
    2841              :     }
    2842            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ENABLE", MatchAny, "RULE"))
    2843              :     {
    2844            0 :         set_completion_reference(prev4_wd);
    2845            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_rule_of_table);
    2846              :     }
    2847            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ENABLE", "TRIGGER"))
    2848              :     {
    2849            0 :         set_completion_reference(prev3_wd);
    2850            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_trigger_of_table);
    2851              :     }
    2852            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ENABLE", MatchAny, "TRIGGER"))
    2853              :     {
    2854            0 :         set_completion_reference(prev4_wd);
    2855            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_trigger_of_table);
    2856              :     }
    2857              :     /* ALTER TABLE xxx INHERIT */
    2858            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "INHERIT"))
    2859            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables);
    2860              :     /* ALTER TABLE xxx NO */
    2861            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "NO"))
    2862            0 :         COMPLETE_WITH("FORCE ROW LEVEL SECURITY", "INHERIT");
    2863              :     /* ALTER TABLE xxx NO INHERIT */
    2864            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "NO", "INHERIT"))
    2865            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables);
    2866              :     /* ALTER TABLE xxx DISABLE */
    2867            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "DISABLE"))
    2868            0 :         COMPLETE_WITH("ROW LEVEL SECURITY", "RULE", "TRIGGER");
    2869            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "DISABLE", "RULE"))
    2870              :     {
    2871            0 :         set_completion_reference(prev3_wd);
    2872            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_rule_of_table);
    2873              :     }
    2874            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "DISABLE", "TRIGGER"))
    2875              :     {
    2876            0 :         set_completion_reference(prev3_wd);
    2877            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_trigger_of_table);
    2878              :     }
    2879              : 
    2880              :     /* ALTER TABLE xxx ALTER */
    2881            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER"))
    2882            0 :         COMPLETE_WITH_ATTR_PLUS(prev2_wd, "COLUMN", "CONSTRAINT");
    2883              : 
    2884              :     /* ALTER TABLE xxx RENAME */
    2885            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "RENAME"))
    2886           12 :         COMPLETE_WITH_ATTR_PLUS(prev2_wd, "COLUMN", "CONSTRAINT", "TO");
    2887           12 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER|RENAME", "COLUMN"))
    2888            0 :         COMPLETE_WITH_ATTR(prev3_wd);
    2889              : 
    2890              :     /* ALTER TABLE xxx RENAME yyy */
    2891            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "RENAME", MatchAnyExcept("CONSTRAINT|TO")))
    2892            0 :         COMPLETE_WITH("TO");
    2893              : 
    2894              :     /* ALTER TABLE xxx RENAME COLUMN/CONSTRAINT yyy */
    2895            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "RENAME", "COLUMN|CONSTRAINT", MatchAnyExcept("TO")))
    2896            0 :         COMPLETE_WITH("TO");
    2897              : 
    2898              :     /* If we have ALTER TABLE <sth> DROP, provide COLUMN or CONSTRAINT */
    2899            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "DROP"))
    2900            0 :         COMPLETE_WITH("COLUMN", "CONSTRAINT");
    2901              :     /* If we have ALTER TABLE <sth> DROP COLUMN, provide list of columns */
    2902            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "DROP", "COLUMN"))
    2903            0 :         COMPLETE_WITH_ATTR(prev3_wd);
    2904              :     /* ALTER TABLE <sth> ALTER|DROP|RENAME CONSTRAINT <constraint> */
    2905            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER|DROP|RENAME", "CONSTRAINT"))
    2906              :     {
    2907            3 :         set_completion_reference(prev3_wd);
    2908            3 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_constraint_of_table);
    2909              :     }
    2910              :     /* ALTER TABLE <sth> VALIDATE CONSTRAINT <non-validated constraint> */
    2911            3 :     else if (Matches("ALTER", "TABLE", MatchAny, "VALIDATE", "CONSTRAINT"))
    2912              :     {
    2913            0 :         set_completion_reference(prev3_wd);
    2914            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_constraint_of_table_not_validated);
    2915              :     }
    2916              :     /* ALTER TABLE ALTER [COLUMN] <foo> */
    2917            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny) ||
    2918              :              Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny))
    2919            0 :         COMPLETE_WITH("TYPE", "SET", "RESET", "RESTART", "ADD", "DROP");
    2920              :     /* ALTER TABLE ALTER [COLUMN] <foo> ADD */
    2921            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "ADD") ||
    2922              :              Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "ADD"))
    2923            0 :         COMPLETE_WITH("GENERATED");
    2924              :     /* ALTER TABLE ALTER [COLUMN] <foo> ADD GENERATED */
    2925            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "ADD", "GENERATED") ||
    2926              :              Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "ADD", "GENERATED"))
    2927            0 :         COMPLETE_WITH("ALWAYS", "BY DEFAULT");
    2928              :     /* ALTER TABLE ALTER [COLUMN] <foo> ADD GENERATED */
    2929            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "ADD", "GENERATED", "ALWAYS") ||
    2930              :              Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "ADD", "GENERATED", "ALWAYS") ||
    2931              :              Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "ADD", "GENERATED", "BY", "DEFAULT") ||
    2932              :              Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "ADD", "GENERATED", "BY", "DEFAULT"))
    2933            0 :         COMPLETE_WITH("AS IDENTITY");
    2934              :     /* ALTER TABLE ALTER [COLUMN] <foo> SET */
    2935            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET") ||
    2936              :              Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET"))
    2937            0 :         COMPLETE_WITH("(", "COMPRESSION", "DATA TYPE", "DEFAULT", "EXPRESSION", "GENERATED", "NOT NULL",
    2938              :                       "STATISTICS", "STORAGE",
    2939              :         /* a subset of ALTER SEQUENCE options */
    2940              :                       "INCREMENT", "MINVALUE", "MAXVALUE", "START", "NO", "CACHE", "CYCLE");
    2941              :     /* ALTER TABLE ALTER [COLUMN] <foo> SET ( */
    2942            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET", "(") ||
    2943              :              Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET", "("))
    2944            0 :         COMPLETE_WITH("n_distinct", "n_distinct_inherited");
    2945              :     /* ALTER TABLE ALTER [COLUMN] <foo> SET COMPRESSION */
    2946            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET", "COMPRESSION") ||
    2947              :              Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET", "COMPRESSION"))
    2948            0 :         COMPLETE_WITH("DEFAULT", "PGLZ", "LZ4");
    2949              :     /* ALTER TABLE ALTER [COLUMN] <foo> SET EXPRESSION */
    2950            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET", "EXPRESSION") ||
    2951              :              Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET", "EXPRESSION"))
    2952            0 :         COMPLETE_WITH("AS");
    2953              :     /* ALTER TABLE ALTER [COLUMN] <foo> SET EXPRESSION AS */
    2954            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET", "EXPRESSION", "AS") ||
    2955              :              Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET", "EXPRESSION", "AS"))
    2956            0 :         COMPLETE_WITH("(");
    2957              :     /* ALTER TABLE ALTER [COLUMN] <foo> SET GENERATED */
    2958            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET", "GENERATED") ||
    2959              :              Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET", "GENERATED"))
    2960            0 :         COMPLETE_WITH("ALWAYS", "BY DEFAULT");
    2961              :     /* ALTER TABLE ALTER [COLUMN] <foo> SET NO */
    2962            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET", "NO") ||
    2963              :              Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET", "NO"))
    2964            0 :         COMPLETE_WITH("MINVALUE", "MAXVALUE", "CYCLE");
    2965              :     /* ALTER TABLE ALTER [COLUMN] <foo> SET STORAGE */
    2966            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET", "STORAGE") ||
    2967              :              Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET", "STORAGE"))
    2968            0 :         COMPLETE_WITH("DEFAULT", "PLAIN", "EXTERNAL", "EXTENDED", "MAIN");
    2969              :     /* ALTER TABLE ALTER [COLUMN] <foo> SET STATISTICS */
    2970            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET", "STATISTICS") ||
    2971              :              Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET", "STATISTICS"))
    2972              :     {
    2973              :         /* Enforce no completion here, as an integer has to be specified */
    2974              :     }
    2975              :     /* ALTER TABLE ALTER [COLUMN] <foo> DROP */
    2976            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "DROP") ||
    2977              :              Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "DROP"))
    2978            0 :         COMPLETE_WITH("DEFAULT", "EXPRESSION", "IDENTITY", "NOT NULL");
    2979            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "CLUSTER"))
    2980            0 :         COMPLETE_WITH("ON");
    2981            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "CLUSTER", "ON"))
    2982              :     {
    2983            0 :         set_completion_reference(prev3_wd);
    2984            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_index_of_table);
    2985              :     }
    2986              :     /* If we have ALTER TABLE <sth> SET, provide list of attributes and '(' */
    2987            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "SET"))
    2988            0 :         COMPLETE_WITH("(", "ACCESS METHOD", "LOGGED", "SCHEMA",
    2989              :                       "TABLESPACE", "UNLOGGED", "WITH", "WITHOUT");
    2990              : 
    2991              :     /*
    2992              :      * If we have ALTER TABLE <sth> SET ACCESS METHOD provide a list of table
    2993              :      * AMs.
    2994              :      */
    2995            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "SET", "ACCESS", "METHOD"))
    2996            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_table_access_methods,
    2997              :                                  "DEFAULT");
    2998              : 
    2999              :     /*
    3000              :      * If we have ALTER TABLE <sth> SET TABLESPACE provide a list of
    3001              :      * tablespaces
    3002              :      */
    3003            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "SET", "TABLESPACE"))
    3004            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_tablespaces);
    3005              :     /* If we have ALTER TABLE <sth> SET WITHOUT provide CLUSTER or OIDS */
    3006            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "SET", "WITHOUT"))
    3007            0 :         COMPLETE_WITH("CLUSTER", "OIDS");
    3008              :     /* ALTER TABLE <foo> RESET */
    3009            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "RESET"))
    3010            0 :         COMPLETE_WITH("(");
    3011              :     /* ALTER TABLE <foo> SET|RESET ( */
    3012            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "SET|RESET", "("))
    3013            0 :         COMPLETE_WITH_LIST(table_storage_parameters);
    3014            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "REPLICA", "IDENTITY", "USING", "INDEX"))
    3015              :     {
    3016            0 :         set_completion_reference(prev5_wd);
    3017            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_index_of_table);
    3018              :     }
    3019            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "REPLICA", "IDENTITY", "USING"))
    3020            0 :         COMPLETE_WITH("INDEX");
    3021            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "REPLICA", "IDENTITY"))
    3022            0 :         COMPLETE_WITH("FULL", "NOTHING", "DEFAULT", "USING");
    3023            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "REPLICA"))
    3024            0 :         COMPLETE_WITH("IDENTITY");
    3025              : 
    3026              :     /*
    3027              :      * If we have ALTER TABLE <foo> ATTACH PARTITION, provide a list of
    3028              :      * tables.
    3029              :      */
    3030            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "ATTACH", "PARTITION"))
    3031            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables);
    3032              :     /* Limited completion support for partition bound specification */
    3033            0 :     else if (TailMatches("ATTACH", "PARTITION", MatchAny))
    3034            0 :         COMPLETE_WITH("FOR VALUES", "DEFAULT");
    3035            0 :     else if (TailMatches("FOR", "VALUES"))
    3036            0 :         COMPLETE_WITH("FROM (", "IN (", "WITH (");
    3037              : 
    3038              :     /*
    3039              :      * If we have ALTER TABLE <foo> DETACH|SPLIT PARTITION, provide a list of
    3040              :      * partitions of <foo>.
    3041              :      */
    3042            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "DETACH|SPLIT", "PARTITION"))
    3043              :     {
    3044            0 :         set_completion_reference(prev3_wd);
    3045            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_partition_of_table);
    3046              :     }
    3047            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "DETACH", "PARTITION", MatchAny))
    3048            0 :         COMPLETE_WITH("CONCURRENTLY", "FINALIZE");
    3049              : 
    3050              :     /* ALTER TABLE <name> SPLIT PARTITION <name> */
    3051            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "SPLIT", "PARTITION", MatchAny))
    3052            0 :         COMPLETE_WITH("INTO ( PARTITION");
    3053              : 
    3054              :     /* ALTER TABLE <name> MERGE PARTITIONS ( */
    3055            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "MERGE", "PARTITIONS", "("))
    3056              :     {
    3057            0 :         set_completion_reference(prev4_wd);
    3058            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_partition_of_table);
    3059              :     }
    3060            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "MERGE", "PARTITIONS", "(*)"))
    3061            0 :         COMPLETE_WITH("INTO");
    3062              : 
    3063              :     /* ALTER TABLE <name> OF */
    3064            0 :     else if (Matches("ALTER", "TABLE", MatchAny, "OF"))
    3065            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_composite_datatypes);
    3066              : 
    3067              :     /* ALTER TABLESPACE <foo> with RENAME TO, OWNER TO, SET, RESET */
    3068            0 :     else if (Matches("ALTER", "TABLESPACE", MatchAny))
    3069            0 :         COMPLETE_WITH("RENAME TO", "OWNER TO", "SET", "RESET");
    3070              :     /* ALTER TABLESPACE <foo> SET|RESET */
    3071            0 :     else if (Matches("ALTER", "TABLESPACE", MatchAny, "SET|RESET"))
    3072            0 :         COMPLETE_WITH("(");
    3073              :     /* ALTER TABLESPACE <foo> SET|RESET ( */
    3074            0 :     else if (Matches("ALTER", "TABLESPACE", MatchAny, "SET|RESET", "("))
    3075            0 :         COMPLETE_WITH("seq_page_cost", "random_page_cost",
    3076              :                       "effective_io_concurrency", "maintenance_io_concurrency");
    3077              : 
    3078              :     /* ALTER TEXT SEARCH */
    3079            0 :     else if (Matches("ALTER", "TEXT", "SEARCH"))
    3080            0 :         COMPLETE_WITH("CONFIGURATION", "DICTIONARY", "PARSER", "TEMPLATE");
    3081            0 :     else if (Matches("ALTER", "TEXT", "SEARCH", "TEMPLATE|PARSER", MatchAny))
    3082            0 :         COMPLETE_WITH("RENAME TO", "SET SCHEMA");
    3083            0 :     else if (Matches("ALTER", "TEXT", "SEARCH", "DICTIONARY", MatchAny))
    3084            0 :         COMPLETE_WITH("(", "OWNER TO", "RENAME TO", "SET SCHEMA");
    3085            0 :     else if (Matches("ALTER", "TEXT", "SEARCH", "CONFIGURATION", MatchAny))
    3086            0 :         COMPLETE_WITH("ADD MAPPING FOR", "ALTER MAPPING",
    3087              :                       "DROP MAPPING FOR",
    3088              :                       "OWNER TO", "RENAME TO", "SET SCHEMA");
    3089              : 
    3090              :     /* complete ALTER TYPE <foo> with actions */
    3091            0 :     else if (Matches("ALTER", "TYPE", MatchAny))
    3092            0 :         COMPLETE_WITH("ADD ATTRIBUTE", "ADD VALUE", "ALTER ATTRIBUTE",
    3093              :                       "DROP ATTRIBUTE",
    3094              :                       "OWNER TO", "RENAME", "SET SCHEMA", "SET (");
    3095              :     /* complete ALTER TYPE <foo> ADD with actions */
    3096            0 :     else if (Matches("ALTER", "TYPE", MatchAny, "ADD"))
    3097            0 :         COMPLETE_WITH("ATTRIBUTE", "VALUE");
    3098              :     /* ALTER TYPE <foo> RENAME    */
    3099            0 :     else if (Matches("ALTER", "TYPE", MatchAny, "RENAME"))
    3100            0 :         COMPLETE_WITH("ATTRIBUTE", "TO", "VALUE");
    3101              :     /* ALTER TYPE xxx RENAME (ATTRIBUTE|VALUE) yyy */
    3102            0 :     else if (Matches("ALTER", "TYPE", MatchAny, "RENAME", "ATTRIBUTE|VALUE", MatchAny))
    3103            0 :         COMPLETE_WITH("TO");
    3104              :     /* ALTER TYPE xxx RENAME ATTRIBUTE yyy TO zzz */
    3105            0 :     else if (Matches("ALTER", "TYPE", MatchAny, "RENAME", "ATTRIBUTE", MatchAny, "TO", MatchAny))
    3106            0 :         COMPLETE_WITH("CASCADE", "RESTRICT");
    3107              : 
    3108              :     /*
    3109              :      * If we have ALTER TYPE <sth> ALTER/DROP/RENAME ATTRIBUTE, provide list
    3110              :      * of attributes
    3111              :      */
    3112            0 :     else if (Matches("ALTER", "TYPE", MatchAny, "ALTER|DROP|RENAME", "ATTRIBUTE"))
    3113            0 :         COMPLETE_WITH_ATTR(prev3_wd);
    3114              :     /* complete ALTER TYPE ADD ATTRIBUTE <foo> with list of types */
    3115            0 :     else if (Matches("ALTER", "TYPE", MatchAny, "ADD", "ATTRIBUTE", MatchAny))
    3116            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_datatypes);
    3117              :     /* complete ALTER TYPE ADD ATTRIBUTE <foo> <footype> with CASCADE/RESTRICT */
    3118            0 :     else if (Matches("ALTER", "TYPE", MatchAny, "ADD", "ATTRIBUTE", MatchAny, MatchAny))
    3119            0 :         COMPLETE_WITH("CASCADE", "RESTRICT");
    3120              :     /* complete ALTER TYPE DROP ATTRIBUTE <foo> with CASCADE/RESTRICT */
    3121            0 :     else if (Matches("ALTER", "TYPE", MatchAny, "DROP", "ATTRIBUTE", MatchAny))
    3122            0 :         COMPLETE_WITH("CASCADE", "RESTRICT");
    3123              :     /* ALTER TYPE ALTER ATTRIBUTE <foo> */
    3124            0 :     else if (Matches("ALTER", "TYPE", MatchAny, "ALTER", "ATTRIBUTE", MatchAny))
    3125            0 :         COMPLETE_WITH("TYPE");
    3126              :     /* ALTER TYPE ALTER ATTRIBUTE <foo> TYPE <footype> */
    3127            0 :     else if (Matches("ALTER", "TYPE", MatchAny, "ALTER", "ATTRIBUTE", MatchAny, "TYPE", MatchAny))
    3128            0 :         COMPLETE_WITH("CASCADE", "RESTRICT");
    3129              :     /* complete ALTER TYPE <sth> RENAME VALUE with list of enum values */
    3130            0 :     else if (Matches("ALTER", "TYPE", MatchAny, "RENAME", "VALUE"))
    3131            3 :         COMPLETE_WITH_ENUM_VALUE(prev3_wd);
    3132              :     /* ALTER TYPE <foo> SET */
    3133            3 :     else if (Matches("ALTER", "TYPE", MatchAny, "SET"))
    3134            0 :         COMPLETE_WITH("(", "SCHEMA");
    3135              :     /* complete ALTER TYPE <foo> SET ( with settable properties */
    3136            0 :     else if (Matches("ALTER", "TYPE", MatchAny, "SET", "("))
    3137            0 :         COMPLETE_WITH("ANALYZE", "RECEIVE", "SEND", "STORAGE", "SUBSCRIPT",
    3138              :                       "TYPMOD_IN", "TYPMOD_OUT");
    3139              : 
    3140              :     /* complete ALTER GROUP <foo> */
    3141            0 :     else if (Matches("ALTER", "GROUP", MatchAny))
    3142            0 :         COMPLETE_WITH("ADD USER", "DROP USER", "RENAME TO");
    3143              :     /* complete ALTER GROUP <foo> ADD|DROP with USER */
    3144            0 :     else if (Matches("ALTER", "GROUP", MatchAny, "ADD|DROP"))
    3145            0 :         COMPLETE_WITH("USER");
    3146              :     /* complete ALTER GROUP <foo> ADD|DROP USER with a user name */
    3147            0 :     else if (Matches("ALTER", "GROUP", MatchAny, "ADD|DROP", "USER"))
    3148            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_roles);
    3149              : 
    3150              : /*
    3151              :  * ANALYZE [ ( option [, ...] ) ] [ [ ONLY ] table_and_columns [, ...] ]
    3152              :  * ANALYZE [ VERBOSE ] [ [ ONLY ] table_and_columns [, ...] ]
    3153              :  */
    3154            0 :     else if (Matches("ANALYZE"))
    3155            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_analyzables,
    3156              :                                         "(", "VERBOSE", "ONLY");
    3157            0 :     else if (Matches("ANALYZE", "VERBOSE"))
    3158            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_analyzables,
    3159              :                                         "ONLY");
    3160            0 :     else if (HeadMatches("ANALYZE", "(*") &&
    3161            2 :              !HeadMatches("ANALYZE", "(*)"))
    3162              :     {
    3163              :         /*
    3164              :          * This fires if we're in an unfinished parenthesized option list.
    3165              :          * get_previous_words treats a completed parenthesized option list as
    3166              :          * one word, so the above test is correct.
    3167              :          */
    3168            2 :         if (ends_with(prev_wd, '(') || ends_with(prev_wd, ','))
    3169            2 :             COMPLETE_WITH("VERBOSE", "SKIP_LOCKED", "BUFFER_USAGE_LIMIT");
    3170            0 :         else if (TailMatches("VERBOSE|SKIP_LOCKED"))
    3171            0 :             COMPLETE_WITH("ON", "OFF");
    3172              :     }
    3173            2 :     else if (Matches("ANALYZE", "(*)"))
    3174            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_analyzables,
    3175              :                                         "ONLY");
    3176            0 :     else if (Matches("ANALYZE", MatchAnyN, "("))
    3177              :         /* "ANALYZE (" should be caught above, so assume we want columns */
    3178            0 :         COMPLETE_WITH_ATTR(prev2_wd);
    3179            0 :     else if (HeadMatches("ANALYZE"))
    3180            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_analyzables);
    3181              : 
    3182              : /* BEGIN */
    3183            0 :     else if (Matches("BEGIN"))
    3184            0 :         COMPLETE_WITH("WORK", "TRANSACTION", "ISOLATION LEVEL", "READ", "DEFERRABLE", "NOT DEFERRABLE");
    3185              : /* END, ABORT */
    3186            0 :     else if (Matches("END|ABORT"))
    3187            0 :         COMPLETE_WITH("AND", "WORK", "TRANSACTION");
    3188              : /* COMMIT */
    3189            0 :     else if (Matches("COMMIT"))
    3190            0 :         COMPLETE_WITH("AND", "WORK", "TRANSACTION", "PREPARED");
    3191              : /* RELEASE SAVEPOINT */
    3192            0 :     else if (Matches("RELEASE"))
    3193            0 :         COMPLETE_WITH("SAVEPOINT");
    3194              : /* ROLLBACK */
    3195            0 :     else if (Matches("ROLLBACK"))
    3196            0 :         COMPLETE_WITH("AND", "WORK", "TRANSACTION", "TO SAVEPOINT", "PREPARED");
    3197            0 :     else if (Matches("ABORT|END|COMMIT|ROLLBACK", "AND"))
    3198            0 :         COMPLETE_WITH("CHAIN");
    3199              : /* CALL */
    3200            0 :     else if (Matches("CALL"))
    3201            0 :         COMPLETE_WITH_VERSIONED_SCHEMA_QUERY(Query_for_list_of_procedures);
    3202            0 :     else if (Matches("CALL", MatchAny))
    3203            0 :         COMPLETE_WITH("(");
    3204              : /* CHECKPOINT */
    3205            0 :     else if (Matches("CHECKPOINT"))
    3206            0 :         COMPLETE_WITH("(");
    3207            0 :     else if (HeadMatches("CHECKPOINT", "(*") &&
    3208            0 :              !HeadMatches("CHECKPOINT", "(*)"))
    3209              :     {
    3210              :         /*
    3211              :          * This fires if we're in an unfinished parenthesized option list.
    3212              :          * get_previous_words treats a completed parenthesized option list as
    3213              :          * one word, so the above test is correct.
    3214              :          */
    3215            0 :         if (ends_with(prev_wd, '(') || ends_with(prev_wd, ','))
    3216            0 :             COMPLETE_WITH("MODE", "FLUSH_UNLOGGED");
    3217            0 :         else if (TailMatches("MODE"))
    3218            0 :             COMPLETE_WITH("FAST", "SPREAD");
    3219              :     }
    3220              : /* CLOSE */
    3221            0 :     else if (Matches("CLOSE"))
    3222            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_cursors,
    3223              :                                  "ALL");
    3224              : /* CLUSTER */
    3225            0 :     else if (Matches("CLUSTER"))
    3226            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_clusterables,
    3227              :                                         "VERBOSE");
    3228            0 :     else if (Matches("CLUSTER", "VERBOSE") ||
    3229              :              Matches("CLUSTER", "(*)"))
    3230            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_clusterables);
    3231              :     /* If we have CLUSTER <sth>, then add "USING" */
    3232            0 :     else if (Matches("CLUSTER", MatchAnyExcept("VERBOSE|ON|(|(*)")))
    3233            0 :         COMPLETE_WITH("USING");
    3234              :     /* If we have CLUSTER VERBOSE <sth>, then add "USING" */
    3235            0 :     else if (Matches("CLUSTER", "VERBOSE|(*)", MatchAny))
    3236            0 :         COMPLETE_WITH("USING");
    3237              :     /* If we have CLUSTER <sth> USING, then add the index as well */
    3238            0 :     else if (Matches("CLUSTER", MatchAny, "USING") ||
    3239              :              Matches("CLUSTER", "VERBOSE|(*)", MatchAny, "USING"))
    3240              :     {
    3241            0 :         set_completion_reference(prev2_wd);
    3242            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_index_of_table);
    3243              :     }
    3244            0 :     else if (HeadMatches("CLUSTER", "(*") &&
    3245            0 :              !HeadMatches("CLUSTER", "(*)"))
    3246              :     {
    3247              :         /*
    3248              :          * This fires if we're in an unfinished parenthesized option list.
    3249              :          * get_previous_words treats a completed parenthesized option list as
    3250              :          * one word, so the above test is correct.
    3251              :          */
    3252            0 :         if (ends_with(prev_wd, '(') || ends_with(prev_wd, ','))
    3253            0 :             COMPLETE_WITH("VERBOSE");
    3254              :     }
    3255              : 
    3256              : /* COMMENT */
    3257            0 :     else if (Matches("COMMENT"))
    3258            0 :         COMPLETE_WITH("ON");
    3259            0 :     else if (Matches("COMMENT", "ON"))
    3260            0 :         COMPLETE_WITH("ACCESS METHOD", "AGGREGATE", "CAST", "COLLATION",
    3261              :                       "COLUMN", "CONSTRAINT", "CONVERSION", "DATABASE",
    3262              :                       "DOMAIN", "EXTENSION", "EVENT TRIGGER",
    3263              :                       "FOREIGN DATA WRAPPER", "FOREIGN TABLE",
    3264              :                       "FUNCTION", "INDEX", "LANGUAGE", "LARGE OBJECT",
    3265              :                       "MATERIALIZED VIEW", "OPERATOR", "POLICY",
    3266              :                       "PROCEDURE", "PROCEDURAL LANGUAGE", "PUBLICATION", "ROLE",
    3267              :                       "ROUTINE", "RULE", "SCHEMA", "SEQUENCE", "SERVER",
    3268              :                       "STATISTICS", "SUBSCRIPTION", "TABLE",
    3269              :                       "TABLESPACE", "TEXT SEARCH", "TRANSFORM FOR",
    3270              :                       "TRIGGER", "TYPE", "VIEW");
    3271            0 :     else if (Matches("COMMENT", "ON", "ACCESS", "METHOD"))
    3272            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_access_methods);
    3273            0 :     else if (Matches("COMMENT", "ON", "CONSTRAINT"))
    3274            0 :         COMPLETE_WITH_QUERY(Query_for_all_table_constraints);
    3275            0 :     else if (Matches("COMMENT", "ON", "CONSTRAINT", MatchAny))
    3276            0 :         COMPLETE_WITH("ON");
    3277            0 :     else if (Matches("COMMENT", "ON", "CONSTRAINT", MatchAny, "ON"))
    3278              :     {
    3279            1 :         set_completion_reference(prev2_wd);
    3280            1 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_tables_for_constraint,
    3281              :                                         "DOMAIN");
    3282              :     }
    3283            1 :     else if (Matches("COMMENT", "ON", "CONSTRAINT", MatchAny, "ON", "DOMAIN"))
    3284            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_domains);
    3285            0 :     else if (Matches("COMMENT", "ON", "EVENT", "TRIGGER"))
    3286            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_event_triggers);
    3287            0 :     else if (Matches("COMMENT", "ON", "FOREIGN"))
    3288            0 :         COMPLETE_WITH("DATA WRAPPER", "TABLE");
    3289            0 :     else if (Matches("COMMENT", "ON", "FOREIGN", "TABLE"))
    3290            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_foreign_tables);
    3291            0 :     else if (Matches("COMMENT", "ON", "MATERIALIZED", "VIEW"))
    3292            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_matviews);
    3293            0 :     else if (Matches("COMMENT", "ON", "POLICY"))
    3294            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_policies);
    3295            0 :     else if (Matches("COMMENT", "ON", "POLICY", MatchAny))
    3296            0 :         COMPLETE_WITH("ON");
    3297            0 :     else if (Matches("COMMENT", "ON", "POLICY", MatchAny, "ON"))
    3298              :     {
    3299            0 :         set_completion_reference(prev2_wd);
    3300            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables_for_policy);
    3301              :     }
    3302            0 :     else if (Matches("COMMENT", "ON", "PROCEDURAL", "LANGUAGE"))
    3303            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_languages);
    3304            0 :     else if (Matches("COMMENT", "ON", "RULE", MatchAny))
    3305            0 :         COMPLETE_WITH("ON");
    3306            0 :     else if (Matches("COMMENT", "ON", "RULE", MatchAny, "ON"))
    3307              :     {
    3308            0 :         set_completion_reference(prev2_wd);
    3309            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables_for_rule);
    3310              :     }
    3311            0 :     else if (Matches("COMMENT", "ON", "TEXT", "SEARCH"))
    3312            0 :         COMPLETE_WITH("CONFIGURATION", "DICTIONARY", "PARSER", "TEMPLATE");
    3313            0 :     else if (Matches("COMMENT", "ON", "TEXT", "SEARCH", "CONFIGURATION"))
    3314            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_ts_configurations);
    3315            0 :     else if (Matches("COMMENT", "ON", "TEXT", "SEARCH", "DICTIONARY"))
    3316            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_ts_dictionaries);
    3317            0 :     else if (Matches("COMMENT", "ON", "TEXT", "SEARCH", "PARSER"))
    3318            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_ts_parsers);
    3319            0 :     else if (Matches("COMMENT", "ON", "TEXT", "SEARCH", "TEMPLATE"))
    3320            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_ts_templates);
    3321            0 :     else if (Matches("COMMENT", "ON", "TRANSFORM", "FOR"))
    3322            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_datatypes);
    3323            0 :     else if (Matches("COMMENT", "ON", "TRANSFORM", "FOR", MatchAny))
    3324            0 :         COMPLETE_WITH("LANGUAGE");
    3325            0 :     else if (Matches("COMMENT", "ON", "TRANSFORM", "FOR", MatchAny, "LANGUAGE"))
    3326              :     {
    3327            0 :         set_completion_reference(prev2_wd);
    3328            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_languages);
    3329              :     }
    3330            0 :     else if (Matches("COMMENT", "ON", "TRIGGER", MatchAny))
    3331            0 :         COMPLETE_WITH("ON");
    3332            0 :     else if (Matches("COMMENT", "ON", "TRIGGER", MatchAny, "ON"))
    3333              :     {
    3334            0 :         set_completion_reference(prev2_wd);
    3335            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables_for_trigger);
    3336              :     }
    3337            0 :     else if (Matches("COMMENT", "ON", MatchAny, MatchAnyExcept("IS")) ||
    3338              :              Matches("COMMENT", "ON", MatchAny, MatchAny, MatchAnyExcept("IS")) ||
    3339              :              Matches("COMMENT", "ON", MatchAny, MatchAny, MatchAny, MatchAnyExcept("IS")) ||
    3340              :              Matches("COMMENT", "ON", MatchAny, MatchAny, MatchAny, MatchAny, MatchAnyExcept("IS")))
    3341            0 :         COMPLETE_WITH("IS");
    3342              : 
    3343              : /* COPY */
    3344              : 
    3345              :     /*
    3346              :      * If we have COPY, offer list of tables or "(" (Also cover the analogous
    3347              :      * backslash command).
    3348              :      */
    3349            0 :     else if (Matches("COPY|\\copy"))
    3350            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_tables_for_copy, "(");
    3351              :     /* Complete COPY ( with legal query commands */
    3352            0 :     else if (Matches("COPY|\\copy", "("))
    3353            0 :         COMPLETE_WITH("SELECT", "TABLE", "VALUES", "INSERT INTO", "UPDATE", "DELETE FROM", "MERGE INTO", "WITH");
    3354              :     /* Complete COPY <sth> */
    3355            0 :     else if (Matches("COPY|\\copy", MatchAny))
    3356            0 :         COMPLETE_WITH("FROM", "TO");
    3357              :     /* Complete COPY|\copy <sth> FROM|TO with filename or STDIN/STDOUT/PROGRAM */
    3358            0 :     else if (Matches("COPY|\\copy", MatchAny, "FROM|TO"))
    3359              :     {
    3360            4 :         if (HeadMatches("COPY"))
    3361              :         {
    3362              :             /* COPY requires quoted filename */
    3363            4 :             if (TailMatches("FROM"))
    3364            4 :                 COMPLETE_WITH_FILES_PLUS("", true, "STDIN", "PROGRAM");
    3365              :             else
    3366            0 :                 COMPLETE_WITH_FILES_PLUS("", true, "STDOUT", "PROGRAM");
    3367              :         }
    3368              :         else
    3369              :         {
    3370              :             /* \copy supports pstdin and pstdout */
    3371            0 :             if (TailMatches("FROM"))
    3372            0 :                 COMPLETE_WITH_FILES_PLUS("", false, "STDIN", "PSTDIN", "PROGRAM");
    3373              :             else
    3374            0 :                 COMPLETE_WITH_FILES_PLUS("", false, "STDOUT", "PSTDOUT", "PROGRAM");
    3375              :         }
    3376              :     }
    3377              : 
    3378              :     /* Complete COPY|\copy <sth> FROM|TO PROGRAM */
    3379            4 :     else if (Matches("COPY|\\copy", MatchAny, "FROM|TO", "PROGRAM"))
    3380            0 :         COMPLETE_WITH_FILES("", HeadMatches("COPY"));   /* COPY requires quoted
    3381              :                                                          * filename */
    3382              : 
    3383              :     /* Complete COPY <sth> TO [PROGRAM] <sth> */
    3384            0 :     else if (Matches("COPY|\\copy", MatchAny, "TO", MatchAnyExcept("PROGRAM")) ||
    3385              :              Matches("COPY|\\copy", MatchAny, "TO", "PROGRAM", MatchAny))
    3386            0 :         COMPLETE_WITH("WITH (");
    3387              : 
    3388              :     /* Complete COPY <sth> FROM [PROGRAM] <sth> */
    3389            0 :     else if (Matches("COPY|\\copy", MatchAny, "FROM", MatchAnyExcept("PROGRAM")) ||
    3390              :              Matches("COPY|\\copy", MatchAny, "FROM", "PROGRAM", MatchAny))
    3391            0 :         COMPLETE_WITH("WITH (", "WHERE");
    3392              : 
    3393              :     /* Complete COPY <sth> FROM|TO [PROGRAM] filename WITH ( */
    3394            0 :     else if (HeadMatches("COPY|\\copy", MatchAny, "FROM|TO", MatchAnyExcept("PROGRAM"), "WITH", "(*") ||
    3395              :              HeadMatches("COPY|\\copy", MatchAny, "FROM|TO", "PROGRAM", MatchAny, "WITH", "(*"))
    3396              :     {
    3397            1 :         if (!HeadMatches("COPY|\\copy", MatchAny, "FROM|TO", MatchAnyExcept("PROGRAM"), "WITH", "(*)") &&
    3398            1 :             !HeadMatches("COPY|\\copy", MatchAny, "FROM|TO", "PROGRAM", MatchAny, "WITH", "(*)"))
    3399              :         {
    3400              :             /*
    3401              :              * This fires if we're in an unfinished parenthesized option list.
    3402              :              * get_previous_words treats a completed parenthesized option list
    3403              :              * as one word, so the above tests are correct.
    3404              :              */
    3405              : 
    3406            1 :             if (ends_with(prev_wd, '(') || ends_with(prev_wd, ','))
    3407              :             {
    3408            2 :                 if (HeadMatches("COPY|\\copy", MatchAny, "FROM"))
    3409            1 :                     COMPLETE_WITH(Copy_from_options);
    3410              :                 else
    3411            0 :                     COMPLETE_WITH(Copy_to_options);
    3412              :             }
    3413              : 
    3414              :             /* Complete COPY <sth> FROM|TO filename WITH (FORMAT */
    3415            0 :             else if (TailMatches("FORMAT"))
    3416            0 :                 COMPLETE_WITH("binary", "csv", "text");
    3417              : 
    3418              :             /* Complete COPY <sth> FROM|TO filename WITH (FREEZE */
    3419            0 :             else if (TailMatches("FREEZE"))
    3420            0 :                 COMPLETE_WITH("true", "false");
    3421              : 
    3422              :             /* Complete COPY <sth> FROM|TO filename WITH (HEADER */
    3423            0 :             else if (TailMatches("HEADER"))
    3424            0 :                 COMPLETE_WITH("true", "false", "MATCH");
    3425              : 
    3426              :             /* Complete COPY <sth> FROM filename WITH (ON_ERROR */
    3427            0 :             else if (TailMatches("ON_ERROR"))
    3428            0 :                 COMPLETE_WITH("stop", "ignore");
    3429              : 
    3430              :             /* Complete COPY <sth> FROM filename WITH (LOG_VERBOSITY */
    3431            0 :             else if (TailMatches("LOG_VERBOSITY"))
    3432            0 :                 COMPLETE_WITH("silent", "default", "verbose");
    3433              :         }
    3434              : 
    3435              :         /* A completed parenthesized option list should be caught below */
    3436              :     }
    3437              : 
    3438              :     /* Complete COPY <sth> FROM [PROGRAM] <sth> WITH (<options>) */
    3439            1 :     else if (Matches("COPY|\\copy", MatchAny, "FROM", MatchAnyExcept("PROGRAM"), "WITH", MatchAny) ||
    3440              :              Matches("COPY|\\copy", MatchAny, "FROM", "PROGRAM", MatchAny, "WITH", MatchAny))
    3441            0 :         COMPLETE_WITH("WHERE");
    3442              : 
    3443              :     /* CREATE ACCESS METHOD */
    3444              :     /* Complete "CREATE ACCESS METHOD <name>" */
    3445            0 :     else if (Matches("CREATE", "ACCESS", "METHOD", MatchAny))
    3446            0 :         COMPLETE_WITH("TYPE");
    3447              :     /* Complete "CREATE ACCESS METHOD <name> TYPE" */
    3448            0 :     else if (Matches("CREATE", "ACCESS", "METHOD", MatchAny, "TYPE"))
    3449            0 :         COMPLETE_WITH("INDEX", "TABLE");
    3450              :     /* Complete "CREATE ACCESS METHOD <name> TYPE <type>" */
    3451            0 :     else if (Matches("CREATE", "ACCESS", "METHOD", MatchAny, "TYPE", MatchAny))
    3452            0 :         COMPLETE_WITH("HANDLER");
    3453              : 
    3454              :     /* CREATE COLLATION */
    3455            0 :     else if (Matches("CREATE", "COLLATION", MatchAny))
    3456            0 :         COMPLETE_WITH("(", "FROM");
    3457            0 :     else if (Matches("CREATE", "COLLATION", MatchAny, "FROM"))
    3458            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_collations);
    3459            0 :     else if (HeadMatches("CREATE", "COLLATION", MatchAny, "(*"))
    3460              :     {
    3461            0 :         if (TailMatches("(|*,"))
    3462            0 :             COMPLETE_WITH("LOCALE =", "LC_COLLATE =", "LC_CTYPE =",
    3463              :                           "PROVIDER =", "DETERMINISTIC =");
    3464            0 :         else if (TailMatches("PROVIDER", "="))
    3465            0 :             COMPLETE_WITH("libc", "icu");
    3466            0 :         else if (TailMatches("DETERMINISTIC", "="))
    3467            0 :             COMPLETE_WITH("true", "false");
    3468              :     }
    3469              : 
    3470              :     /* CREATE DATABASE */
    3471            0 :     else if (Matches("CREATE", "DATABASE", MatchAny))
    3472            0 :         COMPLETE_WITH("OWNER", "TEMPLATE", "ENCODING", "TABLESPACE",
    3473              :                       "IS_TEMPLATE", "STRATEGY",
    3474              :                       "ALLOW_CONNECTIONS", "CONNECTION LIMIT",
    3475              :                       "LC_COLLATE", "LC_CTYPE", "LOCALE", "OID",
    3476              :                       "LOCALE_PROVIDER", "ICU_LOCALE");
    3477              : 
    3478            0 :     else if (Matches("CREATE", "DATABASE", MatchAny, "TEMPLATE"))
    3479            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_template_databases);
    3480            0 :     else if (Matches("CREATE", "DATABASE", MatchAny, "STRATEGY"))
    3481            0 :         COMPLETE_WITH("WAL_LOG", "FILE_COPY");
    3482              : 
    3483              :     /* CREATE DOMAIN */
    3484            0 :     else if (Matches("CREATE", "DOMAIN", MatchAny))
    3485            0 :         COMPLETE_WITH("AS");
    3486            0 :     else if (Matches("CREATE", "DOMAIN", MatchAny, "AS"))
    3487            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_datatypes);
    3488            0 :     else if (Matches("CREATE", "DOMAIN", MatchAny, "AS", MatchAny))
    3489            0 :         COMPLETE_WITH("COLLATE", "DEFAULT", "CONSTRAINT",
    3490              :                       "NOT NULL", "NULL", "CHECK (");
    3491            0 :     else if (Matches("CREATE", "DOMAIN", MatchAny, "COLLATE"))
    3492            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_collations);
    3493              : 
    3494              :     /* CREATE EXTENSION */
    3495              :     /* Complete with available extensions rather than installed ones. */
    3496            0 :     else if (Matches("CREATE", "EXTENSION"))
    3497            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_available_extensions);
    3498              :     /* CREATE EXTENSION <name> */
    3499            0 :     else if (Matches("CREATE", "EXTENSION", MatchAny))
    3500            0 :         COMPLETE_WITH("WITH SCHEMA", "CASCADE", "VERSION");
    3501              :     /* CREATE EXTENSION <name> VERSION */
    3502            0 :     else if (Matches("CREATE", "EXTENSION", MatchAny, "VERSION"))
    3503              :     {
    3504            0 :         set_completion_reference(prev2_wd);
    3505            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_available_extension_versions);
    3506              :     }
    3507              : 
    3508              :     /* CREATE FOREIGN */
    3509            0 :     else if (Matches("CREATE", "FOREIGN"))
    3510            0 :         COMPLETE_WITH("DATA WRAPPER", "TABLE");
    3511              : 
    3512              :     /* CREATE FOREIGN DATA WRAPPER */
    3513            0 :     else if (Matches("CREATE", "FOREIGN", "DATA", "WRAPPER", MatchAny))
    3514            0 :         COMPLETE_WITH("HANDLER", "VALIDATOR", "OPTIONS");
    3515              : 
    3516              :     /* CREATE FOREIGN TABLE */
    3517            0 :     else if (Matches("CREATE", "FOREIGN", "TABLE", MatchAny))
    3518            0 :         COMPLETE_WITH("(", "PARTITION OF");
    3519              : 
    3520              :     /* CREATE INDEX --- is allowed inside CREATE SCHEMA, so use TailMatches */
    3521              :     /* First off we complete CREATE UNIQUE with "INDEX" */
    3522            0 :     else if (TailMatches("CREATE", "UNIQUE"))
    3523            0 :         COMPLETE_WITH("INDEX");
    3524              : 
    3525              :     /*
    3526              :      * If we have CREATE|UNIQUE INDEX, then add "ON", "CONCURRENTLY", and
    3527              :      * existing indexes
    3528              :      */
    3529            0 :     else if (TailMatches("CREATE|UNIQUE", "INDEX"))
    3530            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_indexes,
    3531              :                                         "ON", "CONCURRENTLY");
    3532              : 
    3533              :     /*
    3534              :      * Complete ... INDEX|CONCURRENTLY [<name>] ON with a list of relations
    3535              :      * that indexes can be created on
    3536              :      */
    3537            0 :     else if (TailMatches("INDEX|CONCURRENTLY", MatchAny, "ON") ||
    3538              :              TailMatches("INDEX|CONCURRENTLY", "ON"))
    3539            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexables);
    3540              : 
    3541              :     /*
    3542              :      * Complete CREATE|UNIQUE INDEX CONCURRENTLY with "ON" and existing
    3543              :      * indexes
    3544              :      */
    3545            0 :     else if (TailMatches("CREATE|UNIQUE", "INDEX", "CONCURRENTLY"))
    3546            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_indexes,
    3547              :                                         "ON");
    3548              :     /* Complete CREATE|UNIQUE INDEX [CONCURRENTLY] <sth> with "ON" */
    3549            0 :     else if (TailMatches("CREATE|UNIQUE", "INDEX", MatchAny) ||
    3550              :              TailMatches("CREATE|UNIQUE", "INDEX", "CONCURRENTLY", MatchAny))
    3551            0 :         COMPLETE_WITH("ON");
    3552              : 
    3553              :     /*
    3554              :      * Complete INDEX <name> ON <table> with a list of table columns (which
    3555              :      * should really be in parens)
    3556              :      */
    3557            0 :     else if (TailMatches("INDEX", MatchAny, "ON", MatchAny) ||
    3558              :              TailMatches("INDEX|CONCURRENTLY", "ON", MatchAny))
    3559            0 :         COMPLETE_WITH("(", "USING");
    3560            0 :     else if (TailMatches("INDEX", MatchAny, "ON", MatchAny, "(") ||
    3561              :              TailMatches("INDEX|CONCURRENTLY", "ON", MatchAny, "("))
    3562            0 :         COMPLETE_WITH_ATTR(prev2_wd);
    3563              :     /* same if you put in USING */
    3564            0 :     else if (TailMatches("ON", MatchAny, "USING", MatchAny, "("))
    3565            0 :         COMPLETE_WITH_ATTR(prev4_wd);
    3566              :     /* Complete USING with an index method */
    3567            0 :     else if (TailMatches("INDEX", MatchAny, MatchAny, "ON", MatchAny, "USING") ||
    3568              :              TailMatches("INDEX", MatchAny, "ON", MatchAny, "USING") ||
    3569              :              TailMatches("INDEX", "ON", MatchAny, "USING"))
    3570            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_index_access_methods);
    3571            0 :     else if (TailMatches("ON", MatchAny, "USING", MatchAny) &&
    3572              :              !TailMatches("POLICY", MatchAny, MatchAny, MatchAny, MatchAny, MatchAny) &&
    3573            0 :              !TailMatches("FOR", MatchAny, MatchAny, MatchAny))
    3574            0 :         COMPLETE_WITH("(");
    3575              : 
    3576              :     /* CREATE OR REPLACE */
    3577            0 :     else if (Matches("CREATE", "OR"))
    3578            0 :         COMPLETE_WITH("REPLACE");
    3579              : 
    3580              :     /* CREATE POLICY */
    3581              :     /* Complete "CREATE POLICY <name> ON" */
    3582            0 :     else if (Matches("CREATE", "POLICY", MatchAny))
    3583            0 :         COMPLETE_WITH("ON");
    3584              :     /* Complete "CREATE POLICY <name> ON <table>" */
    3585            0 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON"))
    3586            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables);
    3587              :     /* Complete "CREATE POLICY <name> ON <table> AS|FOR|TO|USING|WITH CHECK" */
    3588            0 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny))
    3589            0 :         COMPLETE_WITH("AS", "FOR", "TO", "USING (", "WITH CHECK (");
    3590              :     /* CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE */
    3591            0 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS"))
    3592            0 :         COMPLETE_WITH("PERMISSIVE", "RESTRICTIVE");
    3593              : 
    3594              :     /*
    3595              :      * CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE
    3596              :      * FOR|TO|USING|WITH CHECK
    3597              :      */
    3598            0 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny))
    3599            0 :         COMPLETE_WITH("FOR", "TO", "USING", "WITH CHECK");
    3600              :     /* CREATE POLICY <name> ON <table> FOR ALL|SELECT|INSERT|UPDATE|DELETE */
    3601            0 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "FOR"))
    3602            0 :         COMPLETE_WITH("ALL", "SELECT", "INSERT", "UPDATE", "DELETE");
    3603              :     /* Complete "CREATE POLICY <name> ON <table> FOR INSERT TO|WITH CHECK" */
    3604            0 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "FOR", "INSERT"))
    3605            0 :         COMPLETE_WITH("TO", "WITH CHECK (");
    3606              :     /* Complete "CREATE POLICY <name> ON <table> FOR SELECT|DELETE TO|USING" */
    3607            0 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "FOR", "SELECT|DELETE"))
    3608            0 :         COMPLETE_WITH("TO", "USING (");
    3609              :     /* CREATE POLICY <name> ON <table> FOR ALL|UPDATE TO|USING|WITH CHECK */
    3610            0 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "FOR", "ALL|UPDATE"))
    3611            0 :         COMPLETE_WITH("TO", "USING (", "WITH CHECK (");
    3612              :     /* Complete "CREATE POLICY <name> ON <table> TO <role>" */
    3613            0 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "TO"))
    3614            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_roles,
    3615              :                                  Keywords_for_list_of_grant_roles);
    3616              :     /* Complete "CREATE POLICY <name> ON <table> USING (" */
    3617            0 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "USING"))
    3618            0 :         COMPLETE_WITH("(");
    3619              : 
    3620              :     /*
    3621              :      * CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE FOR
    3622              :      * ALL|SELECT|INSERT|UPDATE|DELETE
    3623              :      */
    3624            0 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "FOR"))
    3625            0 :         COMPLETE_WITH("ALL", "SELECT", "INSERT", "UPDATE", "DELETE");
    3626              : 
    3627              :     /*
    3628              :      * Complete "CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE FOR
    3629              :      * INSERT TO|WITH CHECK"
    3630              :      */
    3631            0 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "FOR", "INSERT"))
    3632            0 :         COMPLETE_WITH("TO", "WITH CHECK (");
    3633              : 
    3634              :     /*
    3635              :      * Complete "CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE FOR
    3636              :      * SELECT|DELETE TO|USING"
    3637              :      */
    3638            0 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "FOR", "SELECT|DELETE"))
    3639            0 :         COMPLETE_WITH("TO", "USING (");
    3640              : 
    3641              :     /*
    3642              :      * CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE FOR
    3643              :      * ALL|UPDATE TO|USING|WITH CHECK
    3644              :      */
    3645            0 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "FOR", "ALL|UPDATE"))
    3646            0 :         COMPLETE_WITH("TO", "USING (", "WITH CHECK (");
    3647              : 
    3648              :     /*
    3649              :      * Complete "CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE TO
    3650              :      * <role>"
    3651              :      */
    3652            0 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "TO"))
    3653            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_roles,
    3654              :                                  Keywords_for_list_of_grant_roles);
    3655              : 
    3656              :     /*
    3657              :      * Complete "CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE
    3658              :      * USING ("
    3659              :      */
    3660            0 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "USING"))
    3661            0 :         COMPLETE_WITH("(");
    3662              : 
    3663              : 
    3664              : /* CREATE PUBLICATION */
    3665            0 :     else if (Matches("CREATE", "PUBLICATION", MatchAny))
    3666            0 :         COMPLETE_WITH("FOR TABLE", "FOR TABLES IN SCHEMA", "FOR ALL TABLES", "FOR ALL SEQUENCES", "WITH (");
    3667            0 :     else if (Matches("CREATE", "PUBLICATION", MatchAny, "FOR"))
    3668            0 :         COMPLETE_WITH("TABLE", "TABLES IN SCHEMA", "ALL TABLES", "ALL SEQUENCES");
    3669            0 :     else if (Matches("CREATE", "PUBLICATION", MatchAny, "FOR", "ALL"))
    3670            0 :         COMPLETE_WITH("TABLES", "SEQUENCES");
    3671            0 :     else if (Matches("CREATE", "PUBLICATION", MatchAny, "FOR", "ALL", "TABLES"))
    3672            0 :         COMPLETE_WITH("WITH (");
    3673            0 :     else if (Matches("CREATE", "PUBLICATION", MatchAny, "FOR", "TABLES"))
    3674            0 :         COMPLETE_WITH("IN SCHEMA");
    3675            0 :     else if (Matches("CREATE", "PUBLICATION", MatchAny, "FOR", "TABLE", MatchAny) && !ends_with(prev_wd, ','))
    3676            0 :         COMPLETE_WITH("WHERE (", "WITH (");
    3677              :     /* Complete "CREATE PUBLICATION <name> FOR TABLE" with "<table>, ..." */
    3678            0 :     else if (Matches("CREATE", "PUBLICATION", MatchAny, "FOR", "TABLE"))
    3679            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables);
    3680              : 
    3681              :     /*
    3682              :      * "CREATE PUBLICATION <name> FOR TABLE <name> WHERE (" - complete with
    3683              :      * table attributes
    3684              :      */
    3685            0 :     else if (Matches("CREATE", "PUBLICATION", MatchAny, MatchAnyN, "WHERE"))
    3686            0 :         COMPLETE_WITH("(");
    3687            0 :     else if (Matches("CREATE", "PUBLICATION", MatchAny, MatchAnyN, "WHERE", "("))
    3688            0 :         COMPLETE_WITH_ATTR(prev3_wd);
    3689            0 :     else if (Matches("CREATE", "PUBLICATION", MatchAny, MatchAnyN, "WHERE", "(*)"))
    3690            0 :         COMPLETE_WITH(" WITH (");
    3691              : 
    3692              :     /*
    3693              :      * Complete "CREATE PUBLICATION <name> FOR TABLES IN SCHEMA <schema>, ..."
    3694              :      */
    3695            0 :     else if (Matches("CREATE", "PUBLICATION", MatchAny, "FOR", "TABLES", "IN", "SCHEMA"))
    3696            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_schemas
    3697              :                                  " AND nspname NOT LIKE E'pg\\\\_%%'",
    3698              :                                  "CURRENT_SCHEMA");
    3699            0 :     else if (Matches("CREATE", "PUBLICATION", MatchAny, "FOR", "TABLES", "IN", "SCHEMA", MatchAny) && (!ends_with(prev_wd, ',')))
    3700            0 :         COMPLETE_WITH("WITH (");
    3701              :     /* Complete "CREATE PUBLICATION <name> [...] WITH" */
    3702            0 :     else if (Matches("CREATE", "PUBLICATION", MatchAnyN, "WITH", "("))
    3703            0 :         COMPLETE_WITH("publish", "publish_generated_columns", "publish_via_partition_root");
    3704              : 
    3705              : /* CREATE RULE */
    3706              :     /* Complete "CREATE [ OR REPLACE ] RULE <sth>" with "AS ON" */
    3707            0 :     else if (Matches("CREATE", "RULE", MatchAny) ||
    3708              :              Matches("CREATE", "OR", "REPLACE", "RULE", MatchAny))
    3709            0 :         COMPLETE_WITH("AS ON");
    3710              :     /* Complete "CREATE [ OR REPLACE ] RULE <sth> AS" with "ON" */
    3711            0 :     else if (Matches("CREATE", "RULE", MatchAny, "AS") ||
    3712              :              Matches("CREATE", "OR", "REPLACE", "RULE", MatchAny, "AS"))
    3713            0 :         COMPLETE_WITH("ON");
    3714              : 
    3715              :     /*
    3716              :      * Complete "CREATE [ OR REPLACE ] RULE <sth> AS ON" with
    3717              :      * SELECT|UPDATE|INSERT|DELETE
    3718              :      */
    3719            0 :     else if (Matches("CREATE", "RULE", MatchAny, "AS", "ON") ||
    3720              :              Matches("CREATE", "OR", "REPLACE", "RULE", MatchAny, "AS", "ON"))
    3721            0 :         COMPLETE_WITH("SELECT", "UPDATE", "INSERT", "DELETE");
    3722              :     /* Complete "AS ON SELECT|UPDATE|INSERT|DELETE" with a "TO" */
    3723            0 :     else if (TailMatches("AS", "ON", "SELECT|UPDATE|INSERT|DELETE"))
    3724            0 :         COMPLETE_WITH("TO");
    3725              :     /* Complete "AS ON <sth> TO" with a table name */
    3726            0 :     else if (TailMatches("AS", "ON", "SELECT|UPDATE|INSERT|DELETE", "TO"))
    3727            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables);
    3728              : 
    3729              : /* CREATE SCHEMA [ <name> ] [ AUTHORIZATION ] */
    3730            0 :     else if (Matches("CREATE", "SCHEMA"))
    3731            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_schemas,
    3732              :                                  "AUTHORIZATION");
    3733            0 :     else if (Matches("CREATE", "SCHEMA", "AUTHORIZATION") ||
    3734              :              Matches("CREATE", "SCHEMA", MatchAny, "AUTHORIZATION"))
    3735            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_roles,
    3736              :                                  Keywords_for_list_of_owner_roles);
    3737            0 :     else if (Matches("CREATE", "SCHEMA", "AUTHORIZATION", MatchAny) ||
    3738              :              Matches("CREATE", "SCHEMA", MatchAny, "AUTHORIZATION", MatchAny))
    3739            0 :         COMPLETE_WITH("CREATE", "GRANT");
    3740            0 :     else if (Matches("CREATE", "SCHEMA", MatchAny))
    3741            0 :         COMPLETE_WITH("AUTHORIZATION", "CREATE", "GRANT");
    3742              : 
    3743              : /* CREATE SEQUENCE --- is allowed inside CREATE SCHEMA, so use TailMatches */
    3744            0 :     else if (TailMatches("CREATE", "SEQUENCE", MatchAny) ||
    3745              :              TailMatches("CREATE", "TEMP|TEMPORARY", "SEQUENCE", MatchAny))
    3746            0 :         COMPLETE_WITH("AS", "INCREMENT BY", "MINVALUE", "MAXVALUE", "NO",
    3747              :                       "CACHE", "CYCLE", "OWNED BY", "START WITH");
    3748            0 :     else if (TailMatches("CREATE", "SEQUENCE", MatchAny, "AS") ||
    3749              :              TailMatches("CREATE", "TEMP|TEMPORARY", "SEQUENCE", MatchAny, "AS"))
    3750            0 :         COMPLETE_WITH_CS("smallint", "integer", "bigint");
    3751            0 :     else if (TailMatches("CREATE", "SEQUENCE", MatchAny, "NO") ||
    3752              :              TailMatches("CREATE", "TEMP|TEMPORARY", "SEQUENCE", MatchAny, "NO"))
    3753            0 :         COMPLETE_WITH("MINVALUE", "MAXVALUE", "CYCLE");
    3754              : 
    3755              : /* CREATE SERVER <name> */
    3756            0 :     else if (Matches("CREATE", "SERVER", MatchAny))
    3757            0 :         COMPLETE_WITH("TYPE", "VERSION", "FOREIGN DATA WRAPPER");
    3758              : 
    3759              : /* CREATE STATISTICS <name> */
    3760            0 :     else if (Matches("CREATE", "STATISTICS", MatchAny))
    3761            0 :         COMPLETE_WITH("(", "ON");
    3762            0 :     else if (Matches("CREATE", "STATISTICS", MatchAny, "("))
    3763            0 :         COMPLETE_WITH("ndistinct", "dependencies", "mcv");
    3764            0 :     else if (Matches("CREATE", "STATISTICS", MatchAny, "(*)"))
    3765            0 :         COMPLETE_WITH("ON");
    3766            0 :     else if (Matches("CREATE", "STATISTICS", MatchAny, MatchAnyN, "FROM"))
    3767            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables);
    3768              : 
    3769              : /* CREATE TABLE --- is allowed inside CREATE SCHEMA, so use TailMatches */
    3770              :     /* Complete "CREATE TEMP/TEMPORARY" with the possible temp objects */
    3771            0 :     else if (TailMatches("CREATE", "TEMP|TEMPORARY"))
    3772            0 :         COMPLETE_WITH("SEQUENCE", "TABLE", "VIEW");
    3773              :     /* Complete "CREATE UNLOGGED" with TABLE or SEQUENCE */
    3774            0 :     else if (TailMatches("CREATE", "UNLOGGED"))
    3775            0 :         COMPLETE_WITH("TABLE", "SEQUENCE");
    3776              :     /* Complete PARTITION BY with RANGE ( or LIST ( or ... */
    3777            0 :     else if (TailMatches("PARTITION", "BY"))
    3778            0 :         COMPLETE_WITH("RANGE (", "LIST (", "HASH (");
    3779              :     /* If we have xxx PARTITION OF, provide a list of partitioned tables */
    3780            0 :     else if (TailMatches("PARTITION", "OF"))
    3781            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_partitioned_tables);
    3782              :     /* Limited completion support for partition bound specification */
    3783            0 :     else if (TailMatches("PARTITION", "OF", MatchAny))
    3784            0 :         COMPLETE_WITH("FOR VALUES", "DEFAULT");
    3785              :     /* Complete CREATE TABLE <name> with '(', AS, OF or PARTITION OF */
    3786            0 :     else if (TailMatches("CREATE", "TABLE", MatchAny) ||
    3787              :              TailMatches("CREATE", "TEMP|TEMPORARY|UNLOGGED", "TABLE", MatchAny))
    3788            0 :         COMPLETE_WITH("(", "AS", "OF", "PARTITION OF");
    3789              :     /* Complete CREATE TABLE <name> OF with list of composite types */
    3790            0 :     else if (TailMatches("CREATE", "TABLE", MatchAny, "OF") ||
    3791              :              TailMatches("CREATE", "TEMP|TEMPORARY|UNLOGGED", "TABLE", MatchAny, "OF"))
    3792            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_composite_datatypes);
    3793              :     /* Complete CREATE TABLE <name> [ (...) ] AS with list of keywords */
    3794            0 :     else if (TailMatches("CREATE", "TABLE", MatchAny, "AS") ||
    3795              :              TailMatches("CREATE", "TABLE", MatchAny, "(*)", "AS") ||
    3796              :              TailMatches("CREATE", "TEMP|TEMPORARY|UNLOGGED", "TABLE", MatchAny, "AS") ||
    3797              :              TailMatches("CREATE", "TEMP|TEMPORARY|UNLOGGED", "TABLE", MatchAny, "(*)", "AS"))
    3798            0 :         COMPLETE_WITH("EXECUTE", "SELECT", "TABLE", "VALUES", "WITH");
    3799              :     /* Complete CREATE TABLE name (...) with supported options */
    3800            0 :     else if (TailMatches("CREATE", "TABLE", MatchAny, "(*)"))
    3801            0 :         COMPLETE_WITH("AS", "INHERITS (", "PARTITION BY", "USING", "TABLESPACE", "WITH (");
    3802            0 :     else if (TailMatches("CREATE", "UNLOGGED", "TABLE", MatchAny, "(*)"))
    3803            0 :         COMPLETE_WITH("AS", "INHERITS (", "USING", "TABLESPACE", "WITH (");
    3804            0 :     else if (TailMatches("CREATE", "TEMP|TEMPORARY", "TABLE", MatchAny, "(*)"))
    3805            0 :         COMPLETE_WITH("AS", "INHERITS (", "ON COMMIT", "PARTITION BY", "USING",
    3806              :                       "TABLESPACE", "WITH (");
    3807              :     /* Complete CREATE TABLE (...) USING with table access methods */
    3808            0 :     else if (TailMatches("CREATE", "TABLE", MatchAny, "(*)", "USING") ||
    3809              :              TailMatches("CREATE", "TEMP|TEMPORARY|UNLOGGED", "TABLE", MatchAny, "(*)", "USING"))
    3810            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_table_access_methods);
    3811              :     /* Complete CREATE TABLE (...) WITH with storage parameters */
    3812            0 :     else if (TailMatches("CREATE", "TABLE", MatchAny, "(*)", "WITH", "(") ||
    3813              :              TailMatches("CREATE", "TEMP|TEMPORARY|UNLOGGED", "TABLE", MatchAny, "(*)", "WITH", "("))
    3814            0 :         COMPLETE_WITH_LIST(table_storage_parameters);
    3815              :     /* Complete CREATE TABLE ON COMMIT with actions */
    3816            0 :     else if (TailMatches("CREATE", "TEMP|TEMPORARY", "TABLE", MatchAny, "(*)", "ON", "COMMIT"))
    3817            0 :         COMPLETE_WITH("DELETE ROWS", "DROP", "PRESERVE ROWS");
    3818              : 
    3819              : /* CREATE TABLESPACE */
    3820            0 :     else if (Matches("CREATE", "TABLESPACE", MatchAny))
    3821            0 :         COMPLETE_WITH("OWNER", "LOCATION");
    3822              :     /* Complete CREATE TABLESPACE name OWNER name with "LOCATION" */
    3823            0 :     else if (Matches("CREATE", "TABLESPACE", MatchAny, "OWNER", MatchAny))
    3824            0 :         COMPLETE_WITH("LOCATION");
    3825              : 
    3826              : /* CREATE TEXT SEARCH */
    3827            0 :     else if (Matches("CREATE", "TEXT", "SEARCH"))
    3828            0 :         COMPLETE_WITH("CONFIGURATION", "DICTIONARY", "PARSER", "TEMPLATE");
    3829            0 :     else if (Matches("CREATE", "TEXT", "SEARCH", "CONFIGURATION|DICTIONARY|PARSER|TEMPLATE", MatchAny))
    3830            0 :         COMPLETE_WITH("(");
    3831              : 
    3832              : /* CREATE TRANSFORM */
    3833            0 :     else if (Matches("CREATE", "TRANSFORM") ||
    3834              :              Matches("CREATE", "OR", "REPLACE", "TRANSFORM"))
    3835            0 :         COMPLETE_WITH("FOR");
    3836            0 :     else if (Matches("CREATE", "TRANSFORM", "FOR") ||
    3837              :              Matches("CREATE", "OR", "REPLACE", "TRANSFORM", "FOR"))
    3838            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_datatypes);
    3839            0 :     else if (Matches("CREATE", "TRANSFORM", "FOR", MatchAny) ||
    3840              :              Matches("CREATE", "OR", "REPLACE", "TRANSFORM", "FOR", MatchAny))
    3841            0 :         COMPLETE_WITH("LANGUAGE");
    3842            0 :     else if (Matches("CREATE", "TRANSFORM", "FOR", MatchAny, "LANGUAGE") ||
    3843              :              Matches("CREATE", "OR", "REPLACE", "TRANSFORM", "FOR", MatchAny, "LANGUAGE"))
    3844              :     {
    3845            0 :         set_completion_reference(prev2_wd);
    3846            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_languages);
    3847              :     }
    3848              : 
    3849              : /* CREATE SUBSCRIPTION */
    3850            0 :     else if (Matches("CREATE", "SUBSCRIPTION", MatchAny))
    3851            0 :         COMPLETE_WITH("CONNECTION");
    3852            0 :     else if (Matches("CREATE", "SUBSCRIPTION", MatchAny, "CONNECTION", MatchAny))
    3853            0 :         COMPLETE_WITH("PUBLICATION");
    3854            0 :     else if (Matches("CREATE", "SUBSCRIPTION", MatchAny, "CONNECTION",
    3855              :                      MatchAny, "PUBLICATION"))
    3856              :     {
    3857              :         /* complete with nothing here as this refers to remote publications */
    3858              :     }
    3859            0 :     else if (Matches("CREATE", "SUBSCRIPTION", MatchAnyN, "PUBLICATION", MatchAny))
    3860            0 :         COMPLETE_WITH("WITH (");
    3861              :     /* Complete "CREATE SUBSCRIPTION <name> ...  WITH ( <opt>" */
    3862            0 :     else if (Matches("CREATE", "SUBSCRIPTION", MatchAnyN, "WITH", "("))
    3863            0 :         COMPLETE_WITH("binary", "connect", "copy_data", "create_slot",
    3864              :                       "disable_on_error", "enabled", "failover",
    3865              :                       "max_retention_duration", "origin",
    3866              :                       "password_required", "retain_dead_tuples",
    3867              :                       "run_as_owner", "slot_name", "streaming",
    3868              :                       "synchronous_commit", "two_phase");
    3869              : 
    3870              : /* CREATE TRIGGER --- is allowed inside CREATE SCHEMA, so use TailMatches */
    3871              : 
    3872              :     /*
    3873              :      * Complete CREATE [ OR REPLACE ] TRIGGER <name> with BEFORE|AFTER|INSTEAD
    3874              :      * OF.
    3875              :      */
    3876            0 :     else if (TailMatches("CREATE", "TRIGGER", MatchAny) ||
    3877              :              TailMatches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAny))
    3878            0 :         COMPLETE_WITH("BEFORE", "AFTER", "INSTEAD OF");
    3879              : 
    3880              :     /*
    3881              :      * Complete CREATE [ OR REPLACE ] TRIGGER <name> BEFORE,AFTER with an
    3882              :      * event.
    3883              :      */
    3884            0 :     else if (TailMatches("CREATE", "TRIGGER", MatchAny, "BEFORE|AFTER") ||
    3885              :              TailMatches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAny, "BEFORE|AFTER"))
    3886            0 :         COMPLETE_WITH("INSERT", "DELETE", "UPDATE", "TRUNCATE");
    3887              :     /* Complete CREATE [ OR REPLACE ] TRIGGER <name> INSTEAD OF with an event */
    3888            0 :     else if (TailMatches("CREATE", "TRIGGER", MatchAny, "INSTEAD", "OF") ||
    3889              :              TailMatches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAny, "INSTEAD", "OF"))
    3890            0 :         COMPLETE_WITH("INSERT", "DELETE", "UPDATE");
    3891              : 
    3892              :     /*
    3893              :      * Complete CREATE [ OR REPLACE ] TRIGGER <name> BEFORE,AFTER sth with
    3894              :      * OR|ON.
    3895              :      */
    3896            0 :     else if (TailMatches("CREATE", "TRIGGER", MatchAny, "BEFORE|AFTER", MatchAny) ||
    3897              :              TailMatches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAny, "BEFORE|AFTER", MatchAny) ||
    3898              :              TailMatches("CREATE", "TRIGGER", MatchAny, "INSTEAD", "OF", MatchAny) ||
    3899              :              TailMatches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAny, "INSTEAD", "OF", MatchAny))
    3900            0 :         COMPLETE_WITH("ON", "OR");
    3901              : 
    3902              :     /*
    3903              :      * Complete CREATE [ OR REPLACE ] TRIGGER <name> BEFORE,AFTER event ON
    3904              :      * with a list of tables.  EXECUTE FUNCTION is the recommended grammar
    3905              :      * instead of EXECUTE PROCEDURE in version 11 and upwards.
    3906              :      */
    3907            0 :     else if (TailMatches("CREATE", "TRIGGER", MatchAny, "BEFORE|AFTER", MatchAny, "ON") ||
    3908              :              TailMatches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAny, "BEFORE|AFTER", MatchAny, "ON"))
    3909            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables);
    3910              : 
    3911              :     /*
    3912              :      * Complete CREATE [ OR REPLACE ] TRIGGER ... INSTEAD OF event ON with a
    3913              :      * list of views.
    3914              :      */
    3915            0 :     else if (TailMatches("CREATE", "TRIGGER", MatchAny, "INSTEAD", "OF", MatchAny, "ON") ||
    3916              :              TailMatches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAny, "INSTEAD", "OF", MatchAny, "ON"))
    3917            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_views);
    3918            0 :     else if (Matches("CREATE", "TRIGGER", MatchAnyN,
    3919              :                      "ON", MatchAny) ||
    3920              :              Matches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAnyN,
    3921              :                      "ON", MatchAny))
    3922              :     {
    3923            0 :         if (pset.sversion >= 110000)
    3924            0 :             COMPLETE_WITH("NOT DEFERRABLE", "DEFERRABLE", "INITIALLY",
    3925              :                           "REFERENCING", "FOR", "WHEN (", "EXECUTE FUNCTION");
    3926              :         else
    3927            0 :             COMPLETE_WITH("NOT DEFERRABLE", "DEFERRABLE", "INITIALLY",
    3928              :                           "REFERENCING", "FOR", "WHEN (", "EXECUTE PROCEDURE");
    3929              :     }
    3930            0 :     else if (Matches("CREATE", "TRIGGER", MatchAnyN,
    3931              :                      "DEFERRABLE") ||
    3932              :              Matches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAnyN,
    3933              :                      "DEFERRABLE") ||
    3934              :              Matches("CREATE", "TRIGGER", MatchAnyN,
    3935              :                      "INITIALLY", "IMMEDIATE|DEFERRED") ||
    3936              :              Matches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAnyN,
    3937              :                      "INITIALLY", "IMMEDIATE|DEFERRED"))
    3938              :     {
    3939            0 :         if (pset.sversion >= 110000)
    3940            0 :             COMPLETE_WITH("REFERENCING", "FOR", "WHEN (", "EXECUTE FUNCTION");
    3941              :         else
    3942            0 :             COMPLETE_WITH("REFERENCING", "FOR", "WHEN (", "EXECUTE PROCEDURE");
    3943              :     }
    3944            0 :     else if (Matches("CREATE", "TRIGGER", MatchAnyN,
    3945              :                      "REFERENCING") ||
    3946              :              Matches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAnyN,
    3947              :                      "REFERENCING"))
    3948            0 :         COMPLETE_WITH("OLD TABLE", "NEW TABLE");
    3949            0 :     else if (Matches("CREATE", "TRIGGER", MatchAnyN,
    3950              :                      "OLD|NEW", "TABLE") ||
    3951              :              Matches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAnyN,
    3952              :                      "OLD|NEW", "TABLE"))
    3953            0 :         COMPLETE_WITH("AS");
    3954            0 :     else if (Matches("CREATE", "TRIGGER", MatchAnyN,
    3955              :                      "REFERENCING", "OLD", "TABLE", "AS", MatchAny) ||
    3956              :              Matches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAnyN,
    3957              :                      "REFERENCING", "OLD", "TABLE", "AS", MatchAny) ||
    3958              :              Matches("CREATE", "TRIGGER", MatchAnyN,
    3959              :                      "REFERENCING", "OLD", "TABLE", MatchAny) ||
    3960              :              Matches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAnyN,
    3961              :                      "REFERENCING", "OLD", "TABLE", MatchAny))
    3962              :     {
    3963            0 :         if (pset.sversion >= 110000)
    3964            0 :             COMPLETE_WITH("NEW TABLE", "FOR", "WHEN (", "EXECUTE FUNCTION");
    3965              :         else
    3966            0 :             COMPLETE_WITH("NEW TABLE", "FOR", "WHEN (", "EXECUTE PROCEDURE");
    3967              :     }
    3968            0 :     else if (Matches("CREATE", "TRIGGER", MatchAnyN,
    3969              :                      "REFERENCING", "NEW", "TABLE", "AS", MatchAny) ||
    3970              :              Matches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAnyN,
    3971              :                      "REFERENCING", "NEW", "TABLE", "AS", MatchAny) ||
    3972              :              Matches("CREATE", "TRIGGER", MatchAnyN,
    3973              :                      "REFERENCING", "NEW", "TABLE", MatchAny) ||
    3974              :              Matches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAnyN,
    3975              :                      "REFERENCING", "NEW", "TABLE", MatchAny))
    3976              :     {
    3977            0 :         if (pset.sversion >= 110000)
    3978            0 :             COMPLETE_WITH("OLD TABLE", "FOR", "WHEN (", "EXECUTE FUNCTION");
    3979              :         else
    3980            0 :             COMPLETE_WITH("OLD TABLE", "FOR", "WHEN (", "EXECUTE PROCEDURE");
    3981              :     }
    3982            0 :     else if (Matches("CREATE", "TRIGGER", MatchAnyN,
    3983              :                      "REFERENCING", "OLD|NEW", "TABLE", "AS", MatchAny, "OLD|NEW", "TABLE", "AS", MatchAny) ||
    3984              :              Matches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAnyN,
    3985              :                      "REFERENCING", "OLD|NEW", "TABLE", "AS", MatchAny, "OLD|NEW", "TABLE", "AS", MatchAny) ||
    3986              :              Matches("CREATE", "TRIGGER", MatchAnyN,
    3987              :                      "REFERENCING", "OLD|NEW", "TABLE", MatchAny, "OLD|NEW", "TABLE", "AS", MatchAny) ||
    3988              :              Matches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAnyN,
    3989              :                      "REFERENCING", "OLD|NEW", "TABLE", MatchAny, "OLD|NEW", "TABLE", "AS", MatchAny) ||
    3990              :              Matches("CREATE", "TRIGGER", MatchAnyN,
    3991              :                      "REFERENCING", "OLD|NEW", "TABLE", "AS", MatchAny, "OLD|NEW", "TABLE", MatchAny) ||
    3992              :              Matches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAnyN,
    3993              :                      "REFERENCING", "OLD|NEW", "TABLE", "AS", MatchAny, "OLD|NEW", "TABLE", MatchAny) ||
    3994              :              Matches("CREATE", "TRIGGER", MatchAnyN,
    3995              :                      "REFERENCING", "OLD|NEW", "TABLE", MatchAny, "OLD|NEW", "TABLE", MatchAny) ||
    3996              :              Matches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAnyN,
    3997              :                      "REFERENCING", "OLD|NEW", "TABLE", MatchAny, "OLD|NEW", "TABLE", MatchAny))
    3998              :     {
    3999            0 :         if (pset.sversion >= 110000)
    4000            0 :             COMPLETE_WITH("FOR", "WHEN (", "EXECUTE FUNCTION");
    4001              :         else
    4002            0 :             COMPLETE_WITH("FOR", "WHEN (", "EXECUTE PROCEDURE");
    4003              :     }
    4004            0 :     else if (Matches("CREATE", "TRIGGER", MatchAnyN,
    4005              :                      "FOR") ||
    4006              :              Matches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAnyN,
    4007              :                      "FOR"))
    4008            0 :         COMPLETE_WITH("EACH", "ROW", "STATEMENT");
    4009            0 :     else if (Matches("CREATE", "TRIGGER", MatchAnyN,
    4010              :                      "FOR", "EACH") ||
    4011              :              Matches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAnyN,
    4012              :                      "FOR", "EACH"))
    4013            0 :         COMPLETE_WITH("ROW", "STATEMENT");
    4014            0 :     else if (Matches("CREATE", "TRIGGER", MatchAnyN,
    4015              :                      "FOR", "EACH", "ROW|STATEMENT") ||
    4016              :              Matches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAnyN,
    4017              :                      "FOR", "EACH", "ROW|STATEMENT") ||
    4018              :              Matches("CREATE", "TRIGGER", MatchAnyN,
    4019              :                      "FOR", "ROW|STATEMENT") ||
    4020              :              Matches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAnyN,
    4021              :                      "FOR", "ROW|STATEMENT"))
    4022              :     {
    4023            0 :         if (pset.sversion >= 110000)
    4024            0 :             COMPLETE_WITH("WHEN (", "EXECUTE FUNCTION");
    4025              :         else
    4026            0 :             COMPLETE_WITH("WHEN (", "EXECUTE PROCEDURE");
    4027              :     }
    4028            0 :     else if (Matches("CREATE", "TRIGGER", MatchAnyN,
    4029              :                      "WHEN", "(*)") ||
    4030              :              Matches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAnyN,
    4031              :                      "WHEN", "(*)"))
    4032              :     {
    4033            0 :         if (pset.sversion >= 110000)
    4034            0 :             COMPLETE_WITH("EXECUTE FUNCTION");
    4035              :         else
    4036            0 :             COMPLETE_WITH("EXECUTE PROCEDURE");
    4037              :     }
    4038              : 
    4039              :     /*
    4040              :      * Complete CREATE [ OR REPLACE ] TRIGGER ... EXECUTE with
    4041              :      * PROCEDURE|FUNCTION.
    4042              :      */
    4043            0 :     else if (Matches("CREATE", "TRIGGER", MatchAnyN,
    4044              :                      "EXECUTE") ||
    4045              :              Matches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAnyN,
    4046              :                      "EXECUTE"))
    4047              :     {
    4048            0 :         if (pset.sversion >= 110000)
    4049            0 :             COMPLETE_WITH("FUNCTION");
    4050              :         else
    4051            0 :             COMPLETE_WITH("PROCEDURE");
    4052              :     }
    4053            0 :     else if (Matches("CREATE", "TRIGGER", MatchAnyN,
    4054              :                      "EXECUTE", "FUNCTION|PROCEDURE") ||
    4055              :              Matches("CREATE", "OR", "REPLACE", "TRIGGER", MatchAnyN,
    4056              :                      "EXECUTE", "FUNCTION|PROCEDURE"))
    4057            0 :         COMPLETE_WITH_VERSIONED_SCHEMA_QUERY(Query_for_list_of_functions);
    4058              : 
    4059              : /* CREATE ROLE,USER,GROUP <name> */
    4060            0 :     else if (Matches("CREATE", "ROLE|GROUP|USER", MatchAny) &&
    4061            0 :              !TailMatches("USER", "MAPPING"))
    4062            0 :         COMPLETE_WITH("ADMIN", "BYPASSRLS", "CONNECTION LIMIT", "CREATEDB",
    4063              :                       "CREATEROLE", "ENCRYPTED PASSWORD", "IN", "INHERIT",
    4064              :                       "LOGIN", "NOBYPASSRLS",
    4065              :                       "NOCREATEDB", "NOCREATEROLE", "NOINHERIT",
    4066              :                       "NOLOGIN", "NOREPLICATION", "NOSUPERUSER", "PASSWORD",
    4067              :                       "REPLICATION", "ROLE", "SUPERUSER", "SYSID",
    4068              :                       "VALID UNTIL", "WITH");
    4069              : 
    4070              : /* CREATE ROLE,USER,GROUP <name> WITH */
    4071            0 :     else if (Matches("CREATE", "ROLE|GROUP|USER", MatchAny, "WITH"))
    4072              :         /* Similar to the above, but don't complete "WITH" again. */
    4073            0 :         COMPLETE_WITH("ADMIN", "BYPASSRLS", "CONNECTION LIMIT", "CREATEDB",
    4074              :                       "CREATEROLE", "ENCRYPTED PASSWORD", "IN", "INHERIT",
    4075              :                       "LOGIN", "NOBYPASSRLS",
    4076              :                       "NOCREATEDB", "NOCREATEROLE", "NOINHERIT",
    4077              :                       "NOLOGIN", "NOREPLICATION", "NOSUPERUSER", "PASSWORD",
    4078              :                       "REPLICATION", "ROLE", "SUPERUSER", "SYSID",
    4079              :                       "VALID UNTIL");
    4080              : 
    4081              :     /* complete CREATE ROLE,USER,GROUP <name> IN with ROLE,GROUP */
    4082            0 :     else if (Matches("CREATE", "ROLE|USER|GROUP", MatchAny, "IN"))
    4083            0 :         COMPLETE_WITH("GROUP", "ROLE");
    4084              : 
    4085              : /* CREATE TYPE */
    4086            0 :     else if (Matches("CREATE", "TYPE", MatchAny))
    4087            0 :         COMPLETE_WITH("(", "AS");
    4088            0 :     else if (Matches("CREATE", "TYPE", MatchAny, "AS"))
    4089            0 :         COMPLETE_WITH("ENUM", "RANGE", "(");
    4090            0 :     else if (HeadMatches("CREATE", "TYPE", MatchAny, "AS", "("))
    4091              :     {
    4092            0 :         if (TailMatches("(|*,", MatchAny))
    4093            0 :             COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_datatypes);
    4094            0 :         else if (TailMatches("(|*,", MatchAny, MatchAnyExcept("*)")))
    4095            0 :             COMPLETE_WITH("COLLATE", ",", ")");
    4096              :     }
    4097            0 :     else if (Matches("CREATE", "TYPE", MatchAny, "AS", "ENUM|RANGE"))
    4098            0 :         COMPLETE_WITH("(");
    4099            0 :     else if (HeadMatches("CREATE", "TYPE", MatchAny, "("))
    4100              :     {
    4101            0 :         if (TailMatches("(|*,"))
    4102            0 :             COMPLETE_WITH("INPUT", "OUTPUT", "RECEIVE", "SEND",
    4103              :                           "TYPMOD_IN", "TYPMOD_OUT", "ANALYZE", "SUBSCRIPT",
    4104              :                           "INTERNALLENGTH", "PASSEDBYVALUE", "ALIGNMENT",
    4105              :                           "STORAGE", "LIKE", "CATEGORY", "PREFERRED",
    4106              :                           "DEFAULT", "ELEMENT", "DELIMITER",
    4107              :                           "COLLATABLE");
    4108            0 :         else if (TailMatches("(*|*,", MatchAnyExcept("*=")))
    4109            0 :             COMPLETE_WITH("=");
    4110            0 :         else if (TailMatches("=", MatchAnyExcept("*)")))
    4111            0 :             COMPLETE_WITH(",", ")");
    4112              :     }
    4113            0 :     else if (HeadMatches("CREATE", "TYPE", MatchAny, "AS", "RANGE", "("))
    4114              :     {
    4115            0 :         if (TailMatches("(|*,"))
    4116            0 :             COMPLETE_WITH("SUBTYPE", "SUBTYPE_OPCLASS", "COLLATION",
    4117              :                           "CANONICAL", "SUBTYPE_DIFF",
    4118              :                           "MULTIRANGE_TYPE_NAME");
    4119            0 :         else if (TailMatches("(*|*,", MatchAnyExcept("*=")))
    4120            0 :             COMPLETE_WITH("=");
    4121            0 :         else if (TailMatches("=", MatchAnyExcept("*)")))
    4122            0 :             COMPLETE_WITH(",", ")");
    4123              :     }
    4124              : 
    4125              : /* CREATE VIEW --- is allowed inside CREATE SCHEMA, so use TailMatches */
    4126              :     /* Complete CREATE [ OR REPLACE ] VIEW <name> with AS or WITH */
    4127            0 :     else if (TailMatches("CREATE", "VIEW", MatchAny) ||
    4128              :              TailMatches("CREATE", "OR", "REPLACE", "VIEW", MatchAny))
    4129            0 :         COMPLETE_WITH("AS", "WITH");
    4130              :     /* Complete "CREATE [ OR REPLACE ] VIEW <sth> AS with "SELECT" */
    4131            0 :     else if (TailMatches("CREATE", "VIEW", MatchAny, "AS") ||
    4132              :              TailMatches("CREATE", "OR", "REPLACE", "VIEW", MatchAny, "AS"))
    4133            0 :         COMPLETE_WITH("SELECT");
    4134              :     /* CREATE [ OR REPLACE ] VIEW <name> WITH ( yyy [= zzz] ) */
    4135            0 :     else if (TailMatches("CREATE", "VIEW", MatchAny, "WITH") ||
    4136              :              TailMatches("CREATE", "OR", "REPLACE", "VIEW", MatchAny, "WITH"))
    4137            0 :         COMPLETE_WITH("(");
    4138            0 :     else if (TailMatches("CREATE", "VIEW", MatchAny, "WITH", "(") ||
    4139              :              TailMatches("CREATE", "OR", "REPLACE", "VIEW", MatchAny, "WITH", "("))
    4140            0 :         COMPLETE_WITH_LIST(view_optional_parameters);
    4141            0 :     else if (TailMatches("CREATE", "VIEW", MatchAny, "WITH", "(", "check_option") ||
    4142              :              TailMatches("CREATE", "OR", "REPLACE", "VIEW", MatchAny, "WITH", "(", "check_option"))
    4143            0 :         COMPLETE_WITH("=");
    4144            0 :     else if (TailMatches("CREATE", "VIEW", MatchAny, "WITH", "(", "check_option", "=") ||
    4145              :              TailMatches("CREATE", "OR", "REPLACE", "VIEW", MatchAny, "WITH", "(", "check_option", "="))
    4146            0 :         COMPLETE_WITH("local", "cascaded");
    4147              :     /* CREATE [ OR REPLACE ] VIEW <name> WITH ( ... ) AS */
    4148            0 :     else if (TailMatches("CREATE", "VIEW", MatchAny, "WITH", "(*)") ||
    4149              :              TailMatches("CREATE", "OR", "REPLACE", "VIEW", MatchAny, "WITH", "(*)"))
    4150            0 :         COMPLETE_WITH("AS");
    4151              :     /* CREATE [ OR REPLACE ] VIEW <name> WITH ( ... ) AS SELECT */
    4152            0 :     else if (TailMatches("CREATE", "VIEW", MatchAny, "WITH", "(*)", "AS") ||
    4153              :              TailMatches("CREATE", "OR", "REPLACE", "VIEW", MatchAny, "WITH", "(*)", "AS"))
    4154            0 :         COMPLETE_WITH("SELECT");
    4155              : 
    4156              : /* CREATE MATERIALIZED VIEW */
    4157            0 :     else if (Matches("CREATE", "MATERIALIZED"))
    4158            0 :         COMPLETE_WITH("VIEW");
    4159              :     /* Complete CREATE MATERIALIZED VIEW <name> with AS or USING */
    4160            0 :     else if (Matches("CREATE", "MATERIALIZED", "VIEW", MatchAny))
    4161            0 :         COMPLETE_WITH("AS", "USING");
    4162              : 
    4163              :     /*
    4164              :      * Complete CREATE MATERIALIZED VIEW <name> USING with list of access
    4165              :      * methods
    4166              :      */
    4167            0 :     else if (Matches("CREATE", "MATERIALIZED", "VIEW", MatchAny, "USING"))
    4168            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_table_access_methods);
    4169              :     /* Complete CREATE MATERIALIZED VIEW <name> USING <access method> with AS */
    4170            0 :     else if (Matches("CREATE", "MATERIALIZED", "VIEW", MatchAny, "USING", MatchAny))
    4171            0 :         COMPLETE_WITH("AS");
    4172              : 
    4173              :     /*
    4174              :      * Complete CREATE MATERIALIZED VIEW <name> [USING <access method> ] AS
    4175              :      * with "SELECT"
    4176              :      */
    4177            0 :     else if (Matches("CREATE", "MATERIALIZED", "VIEW", MatchAny, "AS") ||
    4178              :              Matches("CREATE", "MATERIALIZED", "VIEW", MatchAny, "USING", MatchAny, "AS"))
    4179            0 :         COMPLETE_WITH("SELECT");
    4180              : 
    4181              : /* CREATE EVENT TRIGGER */
    4182            0 :     else if (Matches("CREATE", "EVENT"))
    4183            0 :         COMPLETE_WITH("TRIGGER");
    4184              :     /* Complete CREATE EVENT TRIGGER <name> with ON */
    4185            0 :     else if (Matches("CREATE", "EVENT", "TRIGGER", MatchAny))
    4186            0 :         COMPLETE_WITH("ON");
    4187              :     /* Complete CREATE EVENT TRIGGER <name> ON with event_type */
    4188            0 :     else if (Matches("CREATE", "EVENT", "TRIGGER", MatchAny, "ON"))
    4189            0 :         COMPLETE_WITH("ddl_command_start", "ddl_command_end", "login",
    4190              :                       "sql_drop", "table_rewrite");
    4191              : 
    4192              :     /*
    4193              :      * Complete CREATE EVENT TRIGGER <name> ON <event_type>.  EXECUTE FUNCTION
    4194              :      * is the recommended grammar instead of EXECUTE PROCEDURE in version 11
    4195              :      * and upwards.
    4196              :      */
    4197            0 :     else if (Matches("CREATE", "EVENT", "TRIGGER", MatchAny, "ON", MatchAny))
    4198              :     {
    4199            0 :         if (pset.sversion >= 110000)
    4200            0 :             COMPLETE_WITH("WHEN TAG IN (", "EXECUTE FUNCTION");
    4201              :         else
    4202            0 :             COMPLETE_WITH("WHEN TAG IN (", "EXECUTE PROCEDURE");
    4203              :     }
    4204            0 :     else if (Matches("CREATE", "EVENT", "TRIGGER", MatchAnyN, "WHEN|AND", MatchAny, "IN", "(*)"))
    4205              :     {
    4206            0 :         if (pset.sversion >= 110000)
    4207            0 :             COMPLETE_WITH("EXECUTE FUNCTION");
    4208              :         else
    4209            0 :             COMPLETE_WITH("EXECUTE PROCEDURE");
    4210              :     }
    4211            0 :     else if (Matches("CREATE", "EVENT", "TRIGGER", MatchAnyN, "EXECUTE", "FUNCTION|PROCEDURE"))
    4212            0 :         COMPLETE_WITH_VERSIONED_SCHEMA_QUERY(Query_for_list_of_functions);
    4213              : 
    4214              : /* DEALLOCATE */
    4215            0 :     else if (Matches("DEALLOCATE"))
    4216            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_prepared_statements,
    4217              :                                  "ALL");
    4218              : 
    4219              : /* DECLARE */
    4220              : 
    4221              :     /*
    4222              :      * Complete DECLARE <name> with one of BINARY, ASENSITIVE, INSENSITIVE,
    4223              :      * SCROLL, NO SCROLL, and CURSOR.
    4224              :      */
    4225            0 :     else if (Matches("DECLARE", MatchAny))
    4226            0 :         COMPLETE_WITH("BINARY", "ASENSITIVE", "INSENSITIVE", "SCROLL", "NO SCROLL",
    4227              :                       "CURSOR");
    4228              : 
    4229              :     /*
    4230              :      * Complete DECLARE ... <option> with other options. The PostgreSQL parser
    4231              :      * allows DECLARE options to be specified in any order. But the
    4232              :      * tab-completion follows the ordering of them that the SQL standard
    4233              :      * provides, like the syntax of DECLARE command in the documentation
    4234              :      * indicates.
    4235              :      */
    4236            0 :     else if (Matches("DECLARE", MatchAnyN, "BINARY"))
    4237            0 :         COMPLETE_WITH("ASENSITIVE", "INSENSITIVE", "SCROLL", "NO SCROLL", "CURSOR");
    4238            0 :     else if (Matches("DECLARE", MatchAnyN, "ASENSITIVE|INSENSITIVE"))
    4239            0 :         COMPLETE_WITH("SCROLL", "NO SCROLL", "CURSOR");
    4240            0 :     else if (Matches("DECLARE", MatchAnyN, "SCROLL"))
    4241            0 :         COMPLETE_WITH("CURSOR");
    4242              :     /* Complete DECLARE ... [options] NO with SCROLL */
    4243            0 :     else if (Matches("DECLARE", MatchAnyN, "NO"))
    4244            0 :         COMPLETE_WITH("SCROLL");
    4245              : 
    4246              :     /*
    4247              :      * Complete DECLARE ... CURSOR with one of WITH HOLD, WITHOUT HOLD, and
    4248              :      * FOR
    4249              :      */
    4250            0 :     else if (Matches("DECLARE", MatchAnyN, "CURSOR"))
    4251            0 :         COMPLETE_WITH("WITH HOLD", "WITHOUT HOLD", "FOR");
    4252              :     /* Complete DECLARE ... CURSOR WITH|WITHOUT with HOLD */
    4253            0 :     else if (Matches("DECLARE", MatchAnyN, "CURSOR", "WITH|WITHOUT"))
    4254            0 :         COMPLETE_WITH("HOLD");
    4255              :     /* Complete DECLARE ... CURSOR WITH|WITHOUT HOLD with FOR */
    4256            0 :     else if (Matches("DECLARE", MatchAnyN, "CURSOR", "WITH|WITHOUT", "HOLD"))
    4257            0 :         COMPLETE_WITH("FOR");
    4258              : 
    4259              : /* DELETE --- can be inside EXPLAIN, RULE, etc */
    4260              :     /* Complete DELETE with "FROM" */
    4261            0 :     else if (Matches("DELETE"))
    4262            0 :         COMPLETE_WITH("FROM");
    4263              :     /* Complete DELETE FROM with a list of tables */
    4264            0 :     else if (TailMatches("DELETE", "FROM"))
    4265            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_updatables);
    4266              :     /* Complete DELETE FROM <table> */
    4267            0 :     else if (TailMatches("DELETE", "FROM", MatchAny))
    4268            0 :         COMPLETE_WITH("USING", "WHERE");
    4269              :     /* XXX: implement tab completion for DELETE ... USING */
    4270              : 
    4271              : /* DISCARD */
    4272            0 :     else if (Matches("DISCARD"))
    4273            0 :         COMPLETE_WITH("ALL", "PLANS", "SEQUENCES", "TEMP");
    4274              : 
    4275              : /* DO */
    4276            0 :     else if (Matches("DO"))
    4277            0 :         COMPLETE_WITH("LANGUAGE");
    4278              : 
    4279              : /* DROP */
    4280              :     /* Complete DROP object with CASCADE / RESTRICT */
    4281            0 :     else if (Matches("DROP",
    4282              :                      "COLLATION|CONVERSION|DOMAIN|EXTENSION|LANGUAGE|PUBLICATION|SCHEMA|SEQUENCE|SERVER|SUBSCRIPTION|STATISTICS|TABLE|TYPE|VIEW",
    4283              :                      MatchAny) ||
    4284              :              Matches("DROP", "ACCESS", "METHOD", MatchAny) ||
    4285              :              Matches("DROP", "EVENT", "TRIGGER", MatchAny) ||
    4286              :              Matches("DROP", "FOREIGN", "DATA", "WRAPPER", MatchAny) ||
    4287              :              Matches("DROP", "FOREIGN", "TABLE", MatchAny) ||
    4288              :              Matches("DROP", "TEXT", "SEARCH", "CONFIGURATION|DICTIONARY|PARSER|TEMPLATE", MatchAny))
    4289            1 :         COMPLETE_WITH("CASCADE", "RESTRICT");
    4290            1 :     else if (Matches("DROP", "AGGREGATE|FUNCTION|PROCEDURE|ROUTINE", MatchAny, MatchAny) &&
    4291            0 :              ends_with(prev_wd, ')'))
    4292            0 :         COMPLETE_WITH("CASCADE", "RESTRICT");
    4293              : 
    4294              :     /* help completing some of the variants */
    4295            0 :     else if (Matches("DROP", "AGGREGATE|FUNCTION|PROCEDURE|ROUTINE", MatchAny))
    4296            0 :         COMPLETE_WITH("(");
    4297            0 :     else if (Matches("DROP", "AGGREGATE|FUNCTION|PROCEDURE|ROUTINE", MatchAny, "("))
    4298            0 :         COMPLETE_WITH_FUNCTION_ARG(prev2_wd);
    4299            0 :     else if (Matches("DROP", "FOREIGN"))
    4300            0 :         COMPLETE_WITH("DATA WRAPPER", "TABLE");
    4301            0 :     else if (Matches("DROP", "DATABASE", MatchAny))
    4302            0 :         COMPLETE_WITH("WITH (");
    4303            0 :     else if (HeadMatches("DROP", "DATABASE") && (ends_with(prev_wd, '(')))
    4304            0 :         COMPLETE_WITH("FORCE");
    4305              : 
    4306              :     /* DROP INDEX */
    4307            0 :     else if (Matches("DROP", "INDEX"))
    4308            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_indexes,
    4309              :                                         "CONCURRENTLY");
    4310            0 :     else if (Matches("DROP", "INDEX", "CONCURRENTLY"))
    4311            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexes);
    4312            0 :     else if (Matches("DROP", "INDEX", MatchAny))
    4313            0 :         COMPLETE_WITH("CASCADE", "RESTRICT");
    4314            0 :     else if (Matches("DROP", "INDEX", "CONCURRENTLY", MatchAny))
    4315            0 :         COMPLETE_WITH("CASCADE", "RESTRICT");
    4316              : 
    4317              :     /* DROP MATERIALIZED VIEW */
    4318            0 :     else if (Matches("DROP", "MATERIALIZED"))
    4319            0 :         COMPLETE_WITH("VIEW");
    4320            0 :     else if (Matches("DROP", "MATERIALIZED", "VIEW"))
    4321            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_matviews);
    4322            0 :     else if (Matches("DROP", "MATERIALIZED", "VIEW", MatchAny))
    4323            0 :         COMPLETE_WITH("CASCADE", "RESTRICT");
    4324              : 
    4325              :     /* DROP OWNED BY */
    4326            0 :     else if (Matches("DROP", "OWNED"))
    4327            0 :         COMPLETE_WITH("BY");
    4328            0 :     else if (Matches("DROP", "OWNED", "BY"))
    4329            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_roles);
    4330            0 :     else if (Matches("DROP", "OWNED", "BY", MatchAny))
    4331            0 :         COMPLETE_WITH("CASCADE", "RESTRICT");
    4332              : 
    4333              :     /* DROP TEXT SEARCH */
    4334            0 :     else if (Matches("DROP", "TEXT", "SEARCH"))
    4335            0 :         COMPLETE_WITH("CONFIGURATION", "DICTIONARY", "PARSER", "TEMPLATE");
    4336              : 
    4337              :     /* DROP TRIGGER */
    4338            0 :     else if (Matches("DROP", "TRIGGER", MatchAny))
    4339            0 :         COMPLETE_WITH("ON");
    4340            0 :     else if (Matches("DROP", "TRIGGER", MatchAny, "ON"))
    4341              :     {
    4342            0 :         set_completion_reference(prev2_wd);
    4343            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables_for_trigger);
    4344              :     }
    4345            0 :     else if (Matches("DROP", "TRIGGER", MatchAny, "ON", MatchAny))
    4346            0 :         COMPLETE_WITH("CASCADE", "RESTRICT");
    4347              : 
    4348              :     /* DROP ACCESS METHOD */
    4349            0 :     else if (Matches("DROP", "ACCESS"))
    4350            0 :         COMPLETE_WITH("METHOD");
    4351            0 :     else if (Matches("DROP", "ACCESS", "METHOD"))
    4352            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_access_methods);
    4353              : 
    4354              :     /* DROP EVENT TRIGGER */
    4355            0 :     else if (Matches("DROP", "EVENT"))
    4356            0 :         COMPLETE_WITH("TRIGGER");
    4357            0 :     else if (Matches("DROP", "EVENT", "TRIGGER"))
    4358            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_event_triggers);
    4359              : 
    4360              :     /* DROP POLICY <name>  */
    4361            0 :     else if (Matches("DROP", "POLICY"))
    4362            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_policies);
    4363              :     /* DROP POLICY <name> ON */
    4364            0 :     else if (Matches("DROP", "POLICY", MatchAny))
    4365            0 :         COMPLETE_WITH("ON");
    4366              :     /* DROP POLICY <name> ON <table> */
    4367            0 :     else if (Matches("DROP", "POLICY", MatchAny, "ON"))
    4368              :     {
    4369            0 :         set_completion_reference(prev2_wd);
    4370            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables_for_policy);
    4371              :     }
    4372            0 :     else if (Matches("DROP", "POLICY", MatchAny, "ON", MatchAny))
    4373            0 :         COMPLETE_WITH("CASCADE", "RESTRICT");
    4374              : 
    4375              :     /* DROP RULE */
    4376            0 :     else if (Matches("DROP", "RULE", MatchAny))
    4377            0 :         COMPLETE_WITH("ON");
    4378            0 :     else if (Matches("DROP", "RULE", MatchAny, "ON"))
    4379              :     {
    4380            0 :         set_completion_reference(prev2_wd);
    4381            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables_for_rule);
    4382              :     }
    4383            0 :     else if (Matches("DROP", "RULE", MatchAny, "ON", MatchAny))
    4384            0 :         COMPLETE_WITH("CASCADE", "RESTRICT");
    4385              : 
    4386              :     /* DROP TRANSFORM */
    4387            0 :     else if (Matches("DROP", "TRANSFORM"))
    4388            0 :         COMPLETE_WITH("FOR");
    4389            0 :     else if (Matches("DROP", "TRANSFORM", "FOR"))
    4390            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_datatypes);
    4391            0 :     else if (Matches("DROP", "TRANSFORM", "FOR", MatchAny))
    4392            0 :         COMPLETE_WITH("LANGUAGE");
    4393            0 :     else if (Matches("DROP", "TRANSFORM", "FOR", MatchAny, "LANGUAGE"))
    4394              :     {
    4395            0 :         set_completion_reference(prev2_wd);
    4396            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_languages);
    4397              :     }
    4398            0 :     else if (Matches("DROP", "TRANSFORM", "FOR", MatchAny, "LANGUAGE", MatchAny))
    4399            0 :         COMPLETE_WITH("CASCADE", "RESTRICT");
    4400              : 
    4401              : /* EXECUTE */
    4402            0 :     else if (Matches("EXECUTE"))
    4403            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_prepared_statements);
    4404              : 
    4405              : /*
    4406              :  * EXPLAIN [ ( option [, ...] ) ] statement
    4407              :  * EXPLAIN [ ANALYZE ] [ VERBOSE ] statement
    4408              :  */
    4409            0 :     else if (Matches("EXPLAIN"))
    4410            0 :         COMPLETE_WITH("SELECT", "INSERT INTO", "DELETE FROM", "UPDATE", "DECLARE",
    4411              :                       "MERGE INTO", "EXECUTE", "ANALYZE", "VERBOSE");
    4412            0 :     else if (HeadMatches("EXPLAIN", "(*") &&
    4413            0 :              !HeadMatches("EXPLAIN", "(*)"))
    4414              :     {
    4415              :         /*
    4416              :          * This fires if we're in an unfinished parenthesized option list.
    4417              :          * get_previous_words treats a completed parenthesized option list as
    4418              :          * one word, so the above test is correct.
    4419              :          */
    4420            0 :         if (ends_with(prev_wd, '(') || ends_with(prev_wd, ','))
    4421            0 :             COMPLETE_WITH("ANALYZE", "VERBOSE", "COSTS", "SETTINGS", "GENERIC_PLAN",
    4422              :                           "BUFFERS", "SERIALIZE", "WAL", "TIMING", "SUMMARY",
    4423              :                           "MEMORY", "FORMAT");
    4424            0 :         else if (TailMatches("ANALYZE|VERBOSE|COSTS|SETTINGS|GENERIC_PLAN|BUFFERS|WAL|TIMING|SUMMARY|MEMORY"))
    4425            0 :             COMPLETE_WITH("ON", "OFF");
    4426            0 :         else if (TailMatches("SERIALIZE"))
    4427            0 :             COMPLETE_WITH("TEXT", "NONE", "BINARY");
    4428            0 :         else if (TailMatches("FORMAT"))
    4429            0 :             COMPLETE_WITH("TEXT", "XML", "JSON", "YAML");
    4430              :     }
    4431            0 :     else if (Matches("EXPLAIN", "ANALYZE"))
    4432            0 :         COMPLETE_WITH("SELECT", "INSERT INTO", "DELETE FROM", "UPDATE", "DECLARE",
    4433              :                       "MERGE INTO", "EXECUTE", "VERBOSE");
    4434            0 :     else if (Matches("EXPLAIN", "(*)") ||
    4435              :              Matches("EXPLAIN", "VERBOSE") ||
    4436              :              Matches("EXPLAIN", "ANALYZE", "VERBOSE"))
    4437            0 :         COMPLETE_WITH("SELECT", "INSERT INTO", "DELETE FROM", "UPDATE", "DECLARE",
    4438              :                       "MERGE INTO", "EXECUTE");
    4439              : 
    4440              : /* FETCH && MOVE */
    4441              : 
    4442              :     /*
    4443              :      * Complete FETCH with one of ABSOLUTE, BACKWARD, FORWARD, RELATIVE, ALL,
    4444              :      * NEXT, PRIOR, FIRST, LAST, FROM, IN, and a list of cursors
    4445              :      */
    4446            0 :     else if (Matches("FETCH|MOVE"))
    4447            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_cursors,
    4448              :                                  "ABSOLUTE",
    4449              :                                  "BACKWARD",
    4450              :                                  "FORWARD",
    4451              :                                  "RELATIVE",
    4452              :                                  "ALL",
    4453              :                                  "NEXT",
    4454              :                                  "PRIOR",
    4455              :                                  "FIRST",
    4456              :                                  "LAST",
    4457              :                                  "FROM",
    4458              :                                  "IN");
    4459              : 
    4460              :     /*
    4461              :      * Complete FETCH BACKWARD or FORWARD with one of ALL, FROM, IN, and a
    4462              :      * list of cursors
    4463              :      */
    4464            0 :     else if (Matches("FETCH|MOVE", "BACKWARD|FORWARD"))
    4465            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_cursors,
    4466              :                                  "ALL",
    4467              :                                  "FROM",
    4468              :                                  "IN");
    4469              : 
    4470              :     /*
    4471              :      * Complete FETCH <direction> with "FROM" or "IN". These are equivalent,
    4472              :      * but we may as well tab-complete both: perhaps some users prefer one
    4473              :      * variant or the other.
    4474              :      */
    4475            0 :     else if (Matches("FETCH|MOVE", "ABSOLUTE|BACKWARD|FORWARD|RELATIVE",
    4476              :                      MatchAnyExcept("FROM|IN")) ||
    4477              :              Matches("FETCH|MOVE", "ALL|NEXT|PRIOR|FIRST|LAST"))
    4478            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_cursors,
    4479              :                                  "FROM",
    4480              :                                  "IN");
    4481              :     /* Complete FETCH <direction> "FROM" or "IN" with a list of cursors */
    4482            0 :     else if (Matches("FETCH|MOVE", MatchAnyN, "FROM|IN"))
    4483            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_cursors);
    4484              : 
    4485              : /* FOREIGN DATA WRAPPER */
    4486              :     /* applies in ALTER/DROP FDW and in CREATE SERVER */
    4487            0 :     else if (TailMatches("FOREIGN", "DATA", "WRAPPER") &&
    4488            0 :              !TailMatches("CREATE", MatchAny, MatchAny, MatchAny))
    4489            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_fdws);
    4490              :     /* applies in CREATE SERVER */
    4491            0 :     else if (Matches("CREATE", "SERVER", MatchAnyN, "FOREIGN", "DATA", "WRAPPER", MatchAny))
    4492            0 :         COMPLETE_WITH("OPTIONS");
    4493              : 
    4494              : /* FOREIGN TABLE */
    4495            0 :     else if (TailMatches("FOREIGN", "TABLE") &&
    4496            0 :              !TailMatches("CREATE", MatchAny, MatchAny))
    4497            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_foreign_tables);
    4498              : 
    4499              : /* FOREIGN SERVER */
    4500            0 :     else if (TailMatches("FOREIGN", "SERVER"))
    4501            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_servers);
    4502              : 
    4503              : /*
    4504              :  * GRANT and REVOKE are allowed inside CREATE SCHEMA and
    4505              :  * ALTER DEFAULT PRIVILEGES, so use TailMatches
    4506              :  */
    4507              :     /* Complete GRANT/REVOKE with a list of roles and privileges */
    4508            0 :     else if (TailMatches("GRANT|REVOKE") ||
    4509              :              TailMatches("REVOKE", "ADMIN|GRANT|INHERIT|SET", "OPTION", "FOR"))
    4510              :     {
    4511              :         /*
    4512              :          * With ALTER DEFAULT PRIVILEGES, restrict completion to grantable
    4513              :          * privileges (can't grant roles)
    4514              :          */
    4515            0 :         if (HeadMatches("ALTER", "DEFAULT", "PRIVILEGES"))
    4516              :         {
    4517            0 :             if (TailMatches("GRANT") ||
    4518            0 :                 TailMatches("REVOKE", "GRANT", "OPTION", "FOR"))
    4519            0 :                 COMPLETE_WITH("SELECT", "INSERT", "UPDATE",
    4520              :                               "DELETE", "TRUNCATE", "REFERENCES", "TRIGGER",
    4521              :                               "CREATE", "EXECUTE", "USAGE", "MAINTAIN", "ALL");
    4522            0 :             else if (TailMatches("REVOKE"))
    4523            0 :                 COMPLETE_WITH("SELECT", "INSERT", "UPDATE",
    4524              :                               "DELETE", "TRUNCATE", "REFERENCES", "TRIGGER",
    4525              :                               "CREATE", "EXECUTE", "USAGE", "MAINTAIN", "ALL",
    4526              :                               "GRANT OPTION FOR");
    4527              :         }
    4528            0 :         else if (TailMatches("GRANT"))
    4529            0 :             COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_roles,
    4530              :                                      Privilege_options_of_grant_and_revoke);
    4531            0 :         else if (TailMatches("REVOKE"))
    4532            0 :             COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_roles,
    4533              :                                      Privilege_options_of_grant_and_revoke,
    4534              :                                      "GRANT OPTION FOR",
    4535              :                                      "ADMIN OPTION FOR",
    4536              :                                      "INHERIT OPTION FOR",
    4537              :                                      "SET OPTION FOR");
    4538            0 :         else if (TailMatches("REVOKE", "GRANT", "OPTION", "FOR"))
    4539            0 :             COMPLETE_WITH(Privilege_options_of_grant_and_revoke);
    4540            0 :         else if (TailMatches("REVOKE", "ADMIN|INHERIT|SET", "OPTION", "FOR"))
    4541            0 :             COMPLETE_WITH_QUERY(Query_for_list_of_roles);
    4542              :     }
    4543              : 
    4544            0 :     else if (TailMatches("GRANT|REVOKE", "ALTER") ||
    4545              :              TailMatches("REVOKE", "GRANT", "OPTION", "FOR", "ALTER"))
    4546            0 :         COMPLETE_WITH("SYSTEM");
    4547              : 
    4548            0 :     else if (TailMatches("REVOKE", "SET"))
    4549            0 :         COMPLETE_WITH("ON PARAMETER", "OPTION FOR");
    4550            0 :     else if (TailMatches("GRANT", "SET") ||
    4551              :              TailMatches("REVOKE", "GRANT", "OPTION", "FOR", "SET") ||
    4552              :              TailMatches("GRANT|REVOKE", "ALTER", "SYSTEM") ||
    4553              :              TailMatches("REVOKE", "GRANT", "OPTION", "FOR", "ALTER", "SYSTEM"))
    4554            0 :         COMPLETE_WITH("ON PARAMETER");
    4555              : 
    4556            0 :     else if (TailMatches("GRANT|REVOKE", MatchAny, "ON", "PARAMETER") ||
    4557              :              TailMatches("GRANT|REVOKE", MatchAny, MatchAny, "ON", "PARAMETER") ||
    4558              :              TailMatches("REVOKE", "GRANT", "OPTION", "FOR", MatchAny, "ON", "PARAMETER") ||
    4559              :              TailMatches("REVOKE", "GRANT", "OPTION", "FOR", MatchAny, MatchAny, "ON", "PARAMETER"))
    4560            0 :         COMPLETE_WITH_QUERY_VERBATIM(Query_for_list_of_alter_system_set_vars);
    4561              : 
    4562            0 :     else if (TailMatches("GRANT", MatchAny, "ON", "PARAMETER", MatchAny) ||
    4563              :              TailMatches("GRANT", MatchAny, MatchAny, "ON", "PARAMETER", MatchAny))
    4564            0 :         COMPLETE_WITH("TO");
    4565              : 
    4566            0 :     else if (TailMatches("REVOKE", MatchAny, "ON", "PARAMETER", MatchAny) ||
    4567              :              TailMatches("REVOKE", MatchAny, MatchAny, "ON", "PARAMETER", MatchAny) ||
    4568              :              TailMatches("REVOKE", "GRANT", "OPTION", "FOR", MatchAny, "ON", "PARAMETER", MatchAny) ||
    4569              :              TailMatches("REVOKE", "GRANT", "OPTION", "FOR", MatchAny, MatchAny, "ON", "PARAMETER", MatchAny))
    4570            0 :         COMPLETE_WITH("FROM");
    4571              : 
    4572              :     /*
    4573              :      * Complete GRANT/REVOKE <privilege> with "ON", GRANT/REVOKE <role> with
    4574              :      * TO/FROM
    4575              :      */
    4576            0 :     else if (TailMatches("GRANT|REVOKE", MatchAny) ||
    4577              :              TailMatches("REVOKE", "GRANT", "OPTION", "FOR", MatchAny))
    4578              :     {
    4579            0 :         if (TailMatches("SELECT|INSERT|UPDATE|DELETE|TRUNCATE|REFERENCES|TRIGGER|CREATE|CONNECT|TEMPORARY|TEMP|EXECUTE|USAGE|MAINTAIN|ALL"))
    4580            0 :             COMPLETE_WITH("ON");
    4581            0 :         else if (TailMatches("GRANT", MatchAny))
    4582            0 :             COMPLETE_WITH("TO");
    4583              :         else
    4584            0 :             COMPLETE_WITH("FROM");
    4585              :     }
    4586              : 
    4587              :     /*
    4588              :      * Complete GRANT/REVOKE <sth> ON with a list of appropriate relations.
    4589              :      *
    4590              :      * Note: GRANT/REVOKE can get quite complex; tab-completion as implemented
    4591              :      * here will only work if the privilege list contains exactly one
    4592              :      * privilege.
    4593              :      */
    4594            0 :     else if (TailMatches("GRANT|REVOKE", MatchAny, "ON") ||
    4595              :              TailMatches("REVOKE", "GRANT", "OPTION", "FOR", MatchAny, "ON"))
    4596              :     {
    4597              :         /*
    4598              :          * With ALTER DEFAULT PRIVILEGES, restrict completion to the kinds of
    4599              :          * objects supported.
    4600              :          */
    4601            0 :         if (HeadMatches("ALTER", "DEFAULT", "PRIVILEGES"))
    4602            0 :             COMPLETE_WITH("TABLES", "SEQUENCES", "FUNCTIONS", "PROCEDURES", "ROUTINES", "TYPES", "SCHEMAS", "LARGE OBJECTS");
    4603              :         else
    4604            0 :             COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_grantables,
    4605              :                                             "ALL FUNCTIONS IN SCHEMA",
    4606              :                                             "ALL PROCEDURES IN SCHEMA",
    4607              :                                             "ALL ROUTINES IN SCHEMA",
    4608              :                                             "ALL SEQUENCES IN SCHEMA",
    4609              :                                             "ALL TABLES IN SCHEMA",
    4610              :                                             "DATABASE",
    4611              :                                             "DOMAIN",
    4612              :                                             "FOREIGN DATA WRAPPER",
    4613              :                                             "FOREIGN SERVER",
    4614              :                                             "FUNCTION",
    4615              :                                             "LANGUAGE",
    4616              :                                             "LARGE OBJECT",
    4617              :                                             "PARAMETER",
    4618              :                                             "PROCEDURE",
    4619              :                                             "ROUTINE",
    4620              :                                             "SCHEMA",
    4621              :                                             "SEQUENCE",
    4622              :                                             "TABLE",
    4623              :                                             "TABLESPACE",
    4624              :                                             "TYPE");
    4625              :     }
    4626            0 :     else if (TailMatches("GRANT|REVOKE", MatchAny, "ON", "ALL") ||
    4627              :              TailMatches("REVOKE", "GRANT", "OPTION", "FOR", MatchAny, "ON", "ALL"))
    4628            0 :         COMPLETE_WITH("FUNCTIONS IN SCHEMA",
    4629              :                       "PROCEDURES IN SCHEMA",
    4630              :                       "ROUTINES IN SCHEMA",
    4631              :                       "SEQUENCES IN SCHEMA",
    4632              :                       "TABLES IN SCHEMA");
    4633              : 
    4634              :     /*
    4635              :      * Complete "GRANT/REVOKE * ON DATABASE/DOMAIN/..." with a list of
    4636              :      * appropriate objects or keywords.
    4637              :      *
    4638              :      * Complete "GRANT/REVOKE * ON *" with "TO/FROM".
    4639              :      */
    4640            0 :     else if (TailMatches("GRANT|REVOKE", MatchAny, "ON", MatchAny) ||
    4641              :              TailMatches("REVOKE", "GRANT", "OPTION", "FOR", MatchAny, "ON", MatchAny))
    4642              :     {
    4643            0 :         if (TailMatches("DATABASE"))
    4644            0 :             COMPLETE_WITH_QUERY(Query_for_list_of_databases);
    4645            0 :         else if (TailMatches("DOMAIN"))
    4646            0 :             COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_domains);
    4647            0 :         else if (TailMatches("FUNCTION"))
    4648            0 :             COMPLETE_WITH_VERSIONED_SCHEMA_QUERY(Query_for_list_of_functions);
    4649            0 :         else if (TailMatches("FOREIGN"))
    4650            0 :             COMPLETE_WITH("DATA WRAPPER", "SERVER");
    4651            0 :         else if (TailMatches("LANGUAGE"))
    4652            0 :             COMPLETE_WITH_QUERY(Query_for_list_of_languages);
    4653            0 :         else if (TailMatches("LARGE"))
    4654              :         {
    4655            0 :             if (HeadMatches("ALTER", "DEFAULT", "PRIVILEGES"))
    4656            0 :                 COMPLETE_WITH("OBJECTS");
    4657              :             else
    4658            0 :                 COMPLETE_WITH("OBJECT");
    4659              :         }
    4660            0 :         else if (TailMatches("PROCEDURE"))
    4661            0 :             COMPLETE_WITH_VERSIONED_SCHEMA_QUERY(Query_for_list_of_procedures);
    4662            0 :         else if (TailMatches("ROUTINE"))
    4663            0 :             COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_routines);
    4664            0 :         else if (TailMatches("SCHEMA"))
    4665            0 :             COMPLETE_WITH_QUERY(Query_for_list_of_schemas);
    4666            0 :         else if (TailMatches("SEQUENCE"))
    4667            0 :             COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_sequences);
    4668            0 :         else if (TailMatches("TABLE"))
    4669            0 :             COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_grantables);
    4670            0 :         else if (TailMatches("TABLESPACE"))
    4671            0 :             COMPLETE_WITH_QUERY(Query_for_list_of_tablespaces);
    4672            0 :         else if (TailMatches("TYPE"))
    4673            0 :             COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_datatypes);
    4674            0 :         else if (TailMatches("GRANT", MatchAny, MatchAny, MatchAny))
    4675            0 :             COMPLETE_WITH("TO");
    4676              :         else
    4677            0 :             COMPLETE_WITH("FROM");
    4678              :     }
    4679              : 
    4680              :     /*
    4681              :      * Complete "GRANT/REVOKE ... TO/FROM" with username, PUBLIC,
    4682              :      * CURRENT_ROLE, CURRENT_USER, or SESSION_USER.
    4683              :      */
    4684            0 :     else if (Matches("GRANT", MatchAnyN, "TO") ||
    4685              :              Matches("REVOKE", MatchAnyN, "FROM"))
    4686            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_roles,
    4687              :                                  Keywords_for_list_of_grant_roles);
    4688              : 
    4689              :     /*
    4690              :      * Offer grant options after that.
    4691              :      */
    4692            0 :     else if (Matches("GRANT", MatchAnyN, "TO", MatchAny))
    4693            0 :         COMPLETE_WITH("WITH ADMIN",
    4694              :                       "WITH INHERIT",
    4695              :                       "WITH SET",
    4696              :                       "WITH GRANT OPTION",
    4697              :                       "GRANTED BY");
    4698            0 :     else if (Matches("GRANT", MatchAnyN, "TO", MatchAny, "WITH"))
    4699            0 :         COMPLETE_WITH("ADMIN",
    4700              :                       "INHERIT",
    4701              :                       "SET",
    4702              :                       "GRANT OPTION");
    4703            0 :     else if (Matches("GRANT", MatchAnyN, "TO", MatchAny, "WITH", "ADMIN|INHERIT|SET"))
    4704            0 :         COMPLETE_WITH("OPTION", "TRUE", "FALSE");
    4705            0 :     else if (Matches("GRANT", MatchAnyN, "TO", MatchAny, "WITH", MatchAny, "OPTION"))
    4706            0 :         COMPLETE_WITH("GRANTED BY");
    4707            0 :     else if (Matches("GRANT", MatchAnyN, "TO", MatchAny, "WITH", MatchAny, "OPTION", "GRANTED", "BY"))
    4708            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_roles,
    4709              :                                  Keywords_for_list_of_grant_roles);
    4710              :     /* Complete "ALTER DEFAULT PRIVILEGES ... GRANT/REVOKE ... TO/FROM */
    4711            0 :     else if (Matches("ALTER", "DEFAULT", "PRIVILEGES", MatchAnyN, "TO|FROM"))
    4712            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_roles,
    4713              :                                  Keywords_for_list_of_grant_roles);
    4714              :     /* Offer WITH GRANT OPTION after that */
    4715            0 :     else if (Matches("ALTER", "DEFAULT", "PRIVILEGES", MatchAnyN, "TO", MatchAny))
    4716            0 :         COMPLETE_WITH("WITH GRANT OPTION");
    4717              :     /* Complete "GRANT/REVOKE ... ON * *" with TO/FROM */
    4718            0 :     else if (Matches("GRANT|REVOKE", MatchAnyN, "ON", MatchAny, MatchAny) &&
    4719            0 :              !TailMatches("FOREIGN", "SERVER") && !TailMatches("LARGE", "OBJECT"))
    4720              :     {
    4721            0 :         if (Matches("GRANT", MatchAnyN, "ON", MatchAny, MatchAny))
    4722            0 :             COMPLETE_WITH("TO");
    4723              :         else
    4724            0 :             COMPLETE_WITH("FROM");
    4725              :     }
    4726              : 
    4727              :     /* Complete "GRANT/REVOKE * ON ALL * IN SCHEMA *" with TO/FROM */
    4728            0 :     else if (TailMatches("GRANT|REVOKE", MatchAny, "ON", "ALL", MatchAny, "IN", "SCHEMA", MatchAny) ||
    4729              :              TailMatches("REVOKE", "GRANT", "OPTION", "FOR", MatchAny, "ON", "ALL", MatchAny, "IN", "SCHEMA", MatchAny))
    4730              :     {
    4731            0 :         if (TailMatches("GRANT", MatchAny, MatchAny, MatchAny, MatchAny, MatchAny, MatchAny, MatchAny))
    4732            0 :             COMPLETE_WITH("TO");
    4733              :         else
    4734            0 :             COMPLETE_WITH("FROM");
    4735              :     }
    4736              : 
    4737              :     /* Complete "GRANT/REVOKE * ON FOREIGN DATA WRAPPER *" with TO/FROM */
    4738            0 :     else if (TailMatches("GRANT|REVOKE", MatchAny, "ON", "FOREIGN", "DATA", "WRAPPER", MatchAny) ||
    4739              :              TailMatches("REVOKE", "GRANT", "OPTION", "FOR", MatchAny, "ON", "FOREIGN", "DATA", "WRAPPER", MatchAny))
    4740              :     {
    4741            0 :         if (TailMatches("GRANT", MatchAny, MatchAny, MatchAny, MatchAny, MatchAny, MatchAny))
    4742            0 :             COMPLETE_WITH("TO");
    4743              :         else
    4744            0 :             COMPLETE_WITH("FROM");
    4745              :     }
    4746              : 
    4747              :     /* Complete "GRANT/REVOKE * ON FOREIGN SERVER *" with TO/FROM */
    4748            0 :     else if (TailMatches("GRANT|REVOKE", MatchAny, "ON", "FOREIGN", "SERVER", MatchAny) ||
    4749              :              TailMatches("REVOKE", "GRANT", "OPTION", "FOR", MatchAny, "ON", "FOREIGN", "SERVER", MatchAny))
    4750              :     {
    4751            0 :         if (TailMatches("GRANT", MatchAny, MatchAny, MatchAny, MatchAny, MatchAny))
    4752            0 :             COMPLETE_WITH("TO");
    4753              :         else
    4754            0 :             COMPLETE_WITH("FROM");
    4755              :     }
    4756              : 
    4757              :     /* Complete "GRANT/REVOKE * ON LARGE OBJECT *" with TO/FROM */
    4758            0 :     else if (TailMatches("GRANT|REVOKE", MatchAny, "ON", "LARGE", "OBJECT", MatchAny) ||
    4759              :              TailMatches("REVOKE", "GRANT", "OPTION", "FOR", MatchAny, "ON", "LARGE", "OBJECT", MatchAny))
    4760              :     {
    4761            0 :         if (TailMatches("GRANT", MatchAny, MatchAny, MatchAny, MatchAny, MatchAny))
    4762            0 :             COMPLETE_WITH("TO");
    4763              :         else
    4764            0 :             COMPLETE_WITH("FROM");
    4765              :     }
    4766              : 
    4767              :     /* Complete "GRANT/REVOKE * ON LARGE OBJECTS" with TO/FROM */
    4768            0 :     else if (TailMatches("GRANT|REVOKE", MatchAny, "ON", "LARGE", "OBJECTS") ||
    4769              :              TailMatches("REVOKE", "GRANT", "OPTION", "FOR", MatchAny, "ON", "LARGE", "OBJECTS"))
    4770              :     {
    4771            0 :         if (TailMatches("GRANT", MatchAny, MatchAny, MatchAny, MatchAny))
    4772            0 :             COMPLETE_WITH("TO");
    4773              :         else
    4774            0 :             COMPLETE_WITH("FROM");
    4775              :     }
    4776              : 
    4777              : /* GROUP BY */
    4778            0 :     else if (TailMatches("FROM", MatchAny, "GROUP"))
    4779            0 :         COMPLETE_WITH("BY");
    4780              : 
    4781              : /* IMPORT FOREIGN SCHEMA */
    4782            0 :     else if (Matches("IMPORT"))
    4783            0 :         COMPLETE_WITH("FOREIGN SCHEMA");
    4784            0 :     else if (Matches("IMPORT", "FOREIGN"))
    4785            0 :         COMPLETE_WITH("SCHEMA");
    4786            0 :     else if (Matches("IMPORT", "FOREIGN", "SCHEMA", MatchAny))
    4787            0 :         COMPLETE_WITH("EXCEPT (", "FROM SERVER", "LIMIT TO (");
    4788            0 :     else if (TailMatches("LIMIT", "TO", "(*)") ||
    4789              :              TailMatches("EXCEPT", "(*)"))
    4790            0 :         COMPLETE_WITH("FROM SERVER");
    4791            0 :     else if (TailMatches("FROM", "SERVER", MatchAny))
    4792            0 :         COMPLETE_WITH("INTO");
    4793            0 :     else if (TailMatches("FROM", "SERVER", MatchAny, "INTO"))
    4794            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_schemas);
    4795            0 :     else if (TailMatches("FROM", "SERVER", MatchAny, "INTO", MatchAny))
    4796            0 :         COMPLETE_WITH("OPTIONS (");
    4797              : 
    4798              : /* INSERT --- can be inside EXPLAIN, RULE, etc */
    4799              :     /* Complete NOT MATCHED THEN INSERT */
    4800            0 :     else if (TailMatches("NOT", "MATCHED", "THEN", "INSERT"))
    4801            0 :         COMPLETE_WITH("VALUES", "(");
    4802              :     /* Complete INSERT with "INTO" */
    4803            0 :     else if (TailMatches("INSERT"))
    4804            0 :         COMPLETE_WITH("INTO");
    4805              :     /* Complete INSERT INTO with table names */
    4806            0 :     else if (TailMatches("INSERT", "INTO"))
    4807            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_updatables);
    4808              :     /* Complete "INSERT INTO <table> (" with attribute names */
    4809            0 :     else if (TailMatches("INSERT", "INTO", MatchAny, "("))
    4810            0 :         COMPLETE_WITH_ATTR(prev2_wd);
    4811              : 
    4812              :     /*
    4813              :      * Complete INSERT INTO <table> with "(" or "VALUES" or "SELECT" or
    4814              :      * "TABLE" or "DEFAULT VALUES" or "OVERRIDING"
    4815              :      */
    4816            0 :     else if (TailMatches("INSERT", "INTO", MatchAny))
    4817            0 :         COMPLETE_WITH("(", "DEFAULT VALUES", "SELECT", "TABLE", "VALUES", "OVERRIDING");
    4818              : 
    4819              :     /*
    4820              :      * Complete INSERT INTO <table> (attribs) with "VALUES" or "SELECT" or
    4821              :      * "TABLE" or "OVERRIDING"
    4822              :      */
    4823            0 :     else if (TailMatches("INSERT", "INTO", MatchAny, MatchAny) &&
    4824            0 :              ends_with(prev_wd, ')'))
    4825            0 :         COMPLETE_WITH("SELECT", "TABLE", "VALUES", "OVERRIDING");
    4826              : 
    4827              :     /* Complete OVERRIDING */
    4828            0 :     else if (TailMatches("OVERRIDING"))
    4829            0 :         COMPLETE_WITH("SYSTEM VALUE", "USER VALUE");
    4830              : 
    4831              :     /* Complete after OVERRIDING clause */
    4832            0 :     else if (TailMatches("OVERRIDING", MatchAny, "VALUE"))
    4833            0 :         COMPLETE_WITH("SELECT", "TABLE", "VALUES");
    4834              : 
    4835              :     /* Insert an open parenthesis after "VALUES" */
    4836            0 :     else if (TailMatches("VALUES") && !TailMatches("DEFAULT", "VALUES"))
    4837            0 :         COMPLETE_WITH("(");
    4838              : 
    4839              : /* LOCK */
    4840              :     /* Complete LOCK [TABLE] [ONLY] with a list of tables */
    4841            0 :     else if (Matches("LOCK"))
    4842            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_tables,
    4843              :                                         "TABLE", "ONLY");
    4844            0 :     else if (Matches("LOCK", "TABLE"))
    4845            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_tables,
    4846              :                                         "ONLY");
    4847            0 :     else if (Matches("LOCK", "TABLE", "ONLY") || Matches("LOCK", "ONLY"))
    4848            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables);
    4849              :     /* For the following, handle the case of a single table only for now */
    4850              : 
    4851              :     /* Complete LOCK [TABLE] [ONLY] <table> with IN or NOWAIT */
    4852            0 :     else if (Matches("LOCK", MatchAnyExcept("TABLE|ONLY")) ||
    4853              :              Matches("LOCK", "TABLE", MatchAnyExcept("ONLY")) ||
    4854              :              Matches("LOCK", "ONLY", MatchAny) ||
    4855              :              Matches("LOCK", "TABLE", "ONLY", MatchAny))
    4856            0 :         COMPLETE_WITH("IN", "NOWAIT");
    4857              : 
    4858              :     /* Complete LOCK [TABLE] [ONLY] <table> IN with a lock mode */
    4859            0 :     else if (Matches("LOCK", MatchAnyN, "IN"))
    4860            0 :         COMPLETE_WITH("ACCESS SHARE MODE",
    4861              :                       "ROW SHARE MODE", "ROW EXCLUSIVE MODE",
    4862              :                       "SHARE UPDATE EXCLUSIVE MODE", "SHARE MODE",
    4863              :                       "SHARE ROW EXCLUSIVE MODE",
    4864              :                       "EXCLUSIVE MODE", "ACCESS EXCLUSIVE MODE");
    4865              : 
    4866              :     /*
    4867              :      * Complete LOCK [TABLE][ONLY] <table> IN ACCESS|ROW with rest of lock
    4868              :      * mode
    4869              :      */
    4870            0 :     else if (Matches("LOCK", MatchAnyN, "IN", "ACCESS|ROW"))
    4871            0 :         COMPLETE_WITH("EXCLUSIVE MODE", "SHARE MODE");
    4872              : 
    4873              :     /* Complete LOCK [TABLE] [ONLY] <table> IN SHARE with rest of lock mode */
    4874            0 :     else if (Matches("LOCK", MatchAnyN, "IN", "SHARE"))
    4875            0 :         COMPLETE_WITH("MODE", "ROW EXCLUSIVE MODE",
    4876              :                       "UPDATE EXCLUSIVE MODE");
    4877              : 
    4878              :     /* Complete LOCK [TABLE] [ONLY] <table> [IN lockmode MODE] with "NOWAIT" */
    4879            0 :     else if (Matches("LOCK", MatchAnyN, "MODE"))
    4880            0 :         COMPLETE_WITH("NOWAIT");
    4881              : 
    4882              : /* MERGE --- can be inside EXPLAIN */
    4883            0 :     else if (TailMatches("MERGE"))
    4884            0 :         COMPLETE_WITH("INTO");
    4885            0 :     else if (TailMatches("MERGE", "INTO"))
    4886            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_mergetargets);
    4887              : 
    4888              :     /* Complete MERGE INTO <table> [[AS] <alias>] with USING */
    4889            0 :     else if (TailMatches("MERGE", "INTO", MatchAny))
    4890            0 :         COMPLETE_WITH("USING", "AS");
    4891            0 :     else if (TailMatches("MERGE", "INTO", MatchAny, "AS", MatchAny) ||
    4892              :              TailMatches("MERGE", "INTO", MatchAny, MatchAnyExcept("USING|AS")))
    4893            0 :         COMPLETE_WITH("USING");
    4894              : 
    4895              :     /*
    4896              :      * Complete MERGE INTO ... USING with a list of relations supporting
    4897              :      * SELECT
    4898              :      */
    4899            0 :     else if (TailMatches("MERGE", "INTO", MatchAny, "USING") ||
    4900              :              TailMatches("MERGE", "INTO", MatchAny, "AS", MatchAny, "USING") ||
    4901              :              TailMatches("MERGE", "INTO", MatchAny, MatchAny, "USING"))
    4902            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_selectables);
    4903              : 
    4904              :     /*
    4905              :      * Complete MERGE INTO <table> [[AS] <alias>] USING <relations> [[AS]
    4906              :      * alias] with ON
    4907              :      */
    4908            0 :     else if (TailMatches("MERGE", "INTO", MatchAny, "USING", MatchAny) ||
    4909              :              TailMatches("MERGE", "INTO", MatchAny, "AS", MatchAny, "USING", MatchAny) ||
    4910              :              TailMatches("MERGE", "INTO", MatchAny, MatchAny, "USING", MatchAny))
    4911            0 :         COMPLETE_WITH("AS", "ON");
    4912            0 :     else if (TailMatches("MERGE", "INTO", MatchAny, "USING", MatchAny, "AS", MatchAny) ||
    4913              :              TailMatches("MERGE", "INTO", MatchAny, "AS", MatchAny, "USING", MatchAny, "AS", MatchAny) ||
    4914              :              TailMatches("MERGE", "INTO", MatchAny, MatchAny, "USING", MatchAny, "AS", MatchAny) ||
    4915              :              TailMatches("MERGE", "INTO", MatchAny, "USING", MatchAny, MatchAnyExcept("ON|AS")) ||
    4916              :              TailMatches("MERGE", "INTO", MatchAny, "AS", MatchAny, "USING", MatchAny, MatchAnyExcept("ON|AS")) ||
    4917              :              TailMatches("MERGE", "INTO", MatchAny, MatchAny, "USING", MatchAny, MatchAnyExcept("ON|AS")))
    4918            0 :         COMPLETE_WITH("ON");
    4919              : 
    4920              :     /* Complete MERGE INTO ... ON with target table attributes */
    4921            0 :     else if (TailMatches("INTO", MatchAny, "USING", MatchAny, "ON"))
    4922            0 :         COMPLETE_WITH_ATTR(prev4_wd);
    4923            0 :     else if (TailMatches("INTO", MatchAny, "AS", MatchAny, "USING", MatchAny, "AS", MatchAny, "ON"))
    4924            0 :         COMPLETE_WITH_ATTR(prev8_wd);
    4925            0 :     else if (TailMatches("INTO", MatchAny, MatchAny, "USING", MatchAny, MatchAny, "ON"))
    4926            0 :         COMPLETE_WITH_ATTR(prev6_wd);
    4927              : 
    4928              :     /*
    4929              :      * Complete ... USING <relation> [[AS] alias] ON join condition
    4930              :      * (consisting of one or three words typically used) with WHEN [NOT]
    4931              :      * MATCHED
    4932              :      */
    4933            0 :     else if (TailMatches("USING", MatchAny, "ON", MatchAny) ||
    4934              :              TailMatches("USING", MatchAny, "AS", MatchAny, "ON", MatchAny) ||
    4935              :              TailMatches("USING", MatchAny, MatchAny, "ON", MatchAny) ||
    4936              :              TailMatches("USING", MatchAny, "ON", MatchAny, MatchAnyExcept("WHEN"), MatchAnyExcept("WHEN")) ||
    4937              :              TailMatches("USING", MatchAny, "AS", MatchAny, "ON", MatchAny, MatchAnyExcept("WHEN"), MatchAnyExcept("WHEN")) ||
    4938              :              TailMatches("USING", MatchAny, MatchAny, "ON", MatchAny, MatchAnyExcept("WHEN"), MatchAnyExcept("WHEN")))
    4939            0 :         COMPLETE_WITH("WHEN MATCHED", "WHEN NOT MATCHED");
    4940            0 :     else if (TailMatches("USING", MatchAny, "ON", MatchAny, "WHEN") ||
    4941              :              TailMatches("USING", MatchAny, "AS", MatchAny, "ON", MatchAny, "WHEN") ||
    4942              :              TailMatches("USING", MatchAny, MatchAny, "ON", MatchAny, "WHEN") ||
    4943              :              TailMatches("USING", MatchAny, "ON", MatchAny, MatchAny, MatchAny, "WHEN") ||
    4944              :              TailMatches("USING", MatchAny, "AS", MatchAny, "ON", MatchAny, MatchAny, MatchAny, "WHEN") ||
    4945              :              TailMatches("USING", MatchAny, MatchAny, "ON", MatchAny, MatchAny, MatchAny, "WHEN"))
    4946            0 :         COMPLETE_WITH("MATCHED", "NOT MATCHED");
    4947              : 
    4948              :     /*
    4949              :      * Complete ... WHEN MATCHED and WHEN NOT MATCHED BY SOURCE|TARGET with
    4950              :      * THEN/AND
    4951              :      */
    4952            0 :     else if (TailMatches("WHEN", "MATCHED") ||
    4953              :              TailMatches("WHEN", "NOT", "MATCHED", "BY", "SOURCE|TARGET"))
    4954            0 :         COMPLETE_WITH("THEN", "AND");
    4955              : 
    4956              :     /* Complete ... WHEN NOT MATCHED with BY/THEN/AND */
    4957            0 :     else if (TailMatches("WHEN", "NOT", "MATCHED"))
    4958            0 :         COMPLETE_WITH("BY", "THEN", "AND");
    4959              : 
    4960              :     /* Complete ... WHEN NOT MATCHED BY with SOURCE/TARGET */
    4961            0 :     else if (TailMatches("WHEN", "NOT", "MATCHED", "BY"))
    4962            0 :         COMPLETE_WITH("SOURCE", "TARGET");
    4963              : 
    4964              :     /*
    4965              :      * Complete ... WHEN MATCHED THEN and WHEN NOT MATCHED BY SOURCE THEN with
    4966              :      * UPDATE SET/DELETE/DO NOTHING
    4967              :      */
    4968            0 :     else if (TailMatches("WHEN", "MATCHED", "THEN") ||
    4969              :              TailMatches("WHEN", "NOT", "MATCHED", "BY", "SOURCE", "THEN"))
    4970            0 :         COMPLETE_WITH("UPDATE SET", "DELETE", "DO NOTHING");
    4971              : 
    4972              :     /*
    4973              :      * Complete ... WHEN NOT MATCHED [BY TARGET] THEN with INSERT/DO NOTHING
    4974              :      */
    4975            0 :     else if (TailMatches("WHEN", "NOT", "MATCHED", "THEN") ||
    4976              :              TailMatches("WHEN", "NOT", "MATCHED", "BY", "TARGET", "THEN"))
    4977            0 :         COMPLETE_WITH("INSERT", "DO NOTHING");
    4978              : 
    4979              : /* NOTIFY --- can be inside EXPLAIN, RULE, etc */
    4980            0 :     else if (TailMatches("NOTIFY"))
    4981            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_channels);
    4982              : 
    4983              : /* OPTIONS */
    4984            0 :     else if (TailMatches("OPTIONS"))
    4985            0 :         COMPLETE_WITH("(");
    4986              : 
    4987              : /* OWNER TO  - complete with available roles */
    4988            0 :     else if (TailMatches("OWNER", "TO"))
    4989            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_roles,
    4990              :                                  Keywords_for_list_of_owner_roles);
    4991              : 
    4992              : /* ORDER BY */
    4993            0 :     else if (TailMatches("FROM", MatchAny, "ORDER"))
    4994            0 :         COMPLETE_WITH("BY");
    4995            0 :     else if (TailMatches("FROM", MatchAny, "ORDER", "BY"))
    4996            0 :         COMPLETE_WITH_ATTR(prev3_wd);
    4997              : 
    4998              : /* PREPARE xx AS */
    4999            0 :     else if (Matches("PREPARE", MatchAny, "AS"))
    5000            0 :         COMPLETE_WITH("SELECT", "UPDATE", "INSERT INTO", "DELETE FROM",
    5001              :                       "MERGE INTO", "VALUES", "WITH", "TABLE");
    5002              : 
    5003              : /*
    5004              :  * PREPARE TRANSACTION is missing on purpose. It's intended for transaction
    5005              :  * managers, not for manual use in interactive sessions.
    5006              :  */
    5007              : 
    5008              : /* REASSIGN OWNED BY xxx TO yyy */
    5009            0 :     else if (Matches("REASSIGN"))
    5010            0 :         COMPLETE_WITH("OWNED BY");
    5011            0 :     else if (Matches("REASSIGN", "OWNED"))
    5012            0 :         COMPLETE_WITH("BY");
    5013            0 :     else if (Matches("REASSIGN", "OWNED", "BY"))
    5014            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_roles);
    5015            0 :     else if (Matches("REASSIGN", "OWNED", "BY", MatchAny))
    5016            0 :         COMPLETE_WITH("TO");
    5017            0 :     else if (Matches("REASSIGN", "OWNED", "BY", MatchAny, "TO"))
    5018            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_roles);
    5019              : 
    5020              : /* REFRESH MATERIALIZED VIEW */
    5021            0 :     else if (Matches("REFRESH"))
    5022            0 :         COMPLETE_WITH("MATERIALIZED VIEW");
    5023            0 :     else if (Matches("REFRESH", "MATERIALIZED"))
    5024            0 :         COMPLETE_WITH("VIEW");
    5025            0 :     else if (Matches("REFRESH", "MATERIALIZED", "VIEW"))
    5026            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_matviews,
    5027              :                                         "CONCURRENTLY");
    5028            0 :     else if (Matches("REFRESH", "MATERIALIZED", "VIEW", "CONCURRENTLY"))
    5029            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_matviews);
    5030            0 :     else if (Matches("REFRESH", "MATERIALIZED", "VIEW", MatchAny))
    5031            0 :         COMPLETE_WITH("WITH");
    5032            0 :     else if (Matches("REFRESH", "MATERIALIZED", "VIEW", "CONCURRENTLY", MatchAny))
    5033            0 :         COMPLETE_WITH("WITH");
    5034            0 :     else if (Matches("REFRESH", "MATERIALIZED", "VIEW", MatchAny, "WITH"))
    5035            0 :         COMPLETE_WITH("NO DATA", "DATA");
    5036            0 :     else if (Matches("REFRESH", "MATERIALIZED", "VIEW", "CONCURRENTLY", MatchAny, "WITH"))
    5037            0 :         COMPLETE_WITH("NO DATA", "DATA");
    5038            0 :     else if (Matches("REFRESH", "MATERIALIZED", "VIEW", MatchAny, "WITH", "NO"))
    5039            0 :         COMPLETE_WITH("DATA");
    5040            0 :     else if (Matches("REFRESH", "MATERIALIZED", "VIEW", "CONCURRENTLY", MatchAny, "WITH", "NO"))
    5041            0 :         COMPLETE_WITH("DATA");
    5042              : 
    5043              : /* REINDEX */
    5044            0 :     else if (Matches("REINDEX") ||
    5045              :              Matches("REINDEX", "(*)"))
    5046            0 :         COMPLETE_WITH("TABLE", "INDEX", "SYSTEM", "SCHEMA", "DATABASE");
    5047            0 :     else if (Matches("REINDEX", "TABLE") ||
    5048              :              Matches("REINDEX", "(*)", "TABLE"))
    5049            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_indexables,
    5050              :                                         "CONCURRENTLY");
    5051            0 :     else if (Matches("REINDEX", "INDEX") ||
    5052              :              Matches("REINDEX", "(*)", "INDEX"))
    5053            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_indexes,
    5054              :                                         "CONCURRENTLY");
    5055            0 :     else if (Matches("REINDEX", "SCHEMA") ||
    5056              :              Matches("REINDEX", "(*)", "SCHEMA"))
    5057            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_schemas,
    5058              :                                  "CONCURRENTLY");
    5059            0 :     else if (Matches("REINDEX", "SYSTEM|DATABASE") ||
    5060              :              Matches("REINDEX", "(*)", "SYSTEM|DATABASE"))
    5061            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_databases,
    5062              :                                  "CONCURRENTLY");
    5063            0 :     else if (Matches("REINDEX", "TABLE", "CONCURRENTLY") ||
    5064              :              Matches("REINDEX", "(*)", "TABLE", "CONCURRENTLY"))
    5065            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexables);
    5066            0 :     else if (Matches("REINDEX", "INDEX", "CONCURRENTLY") ||
    5067              :              Matches("REINDEX", "(*)", "INDEX", "CONCURRENTLY"))
    5068            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexes);
    5069            0 :     else if (Matches("REINDEX", "SCHEMA", "CONCURRENTLY") ||
    5070              :              Matches("REINDEX", "(*)", "SCHEMA", "CONCURRENTLY"))
    5071            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_schemas);
    5072            0 :     else if (Matches("REINDEX", "SYSTEM|DATABASE", "CONCURRENTLY") ||
    5073              :              Matches("REINDEX", "(*)", "SYSTEM|DATABASE", "CONCURRENTLY"))
    5074            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_databases);
    5075            0 :     else if (HeadMatches("REINDEX", "(*") &&
    5076            0 :              !HeadMatches("REINDEX", "(*)"))
    5077              :     {
    5078              :         /*
    5079              :          * This fires if we're in an unfinished parenthesized option list.
    5080              :          * get_previous_words treats a completed parenthesized option list as
    5081              :          * one word, so the above test is correct.
    5082              :          */
    5083            0 :         if (ends_with(prev_wd, '(') || ends_with(prev_wd, ','))
    5084            0 :             COMPLETE_WITH("CONCURRENTLY", "TABLESPACE", "VERBOSE");
    5085            0 :         else if (TailMatches("TABLESPACE"))
    5086            0 :             COMPLETE_WITH_QUERY(Query_for_list_of_tablespaces);
    5087              :     }
    5088              : 
    5089              : /* SECURITY LABEL */
    5090            0 :     else if (Matches("SECURITY"))
    5091            0 :         COMPLETE_WITH("LABEL");
    5092            0 :     else if (Matches("SECURITY", "LABEL"))
    5093            0 :         COMPLETE_WITH("ON", "FOR");
    5094            0 :     else if (Matches("SECURITY", "LABEL", "FOR", MatchAny))
    5095            0 :         COMPLETE_WITH("ON");
    5096            0 :     else if (Matches("SECURITY", "LABEL", "ON") ||
    5097              :              Matches("SECURITY", "LABEL", "FOR", MatchAny, "ON"))
    5098            0 :         COMPLETE_WITH("TABLE", "COLUMN", "AGGREGATE", "DATABASE", "DOMAIN",
    5099              :                       "EVENT TRIGGER", "FOREIGN TABLE", "FUNCTION",
    5100              :                       "LARGE OBJECT", "MATERIALIZED VIEW", "LANGUAGE",
    5101              :                       "PUBLICATION", "PROCEDURE", "ROLE", "ROUTINE", "SCHEMA",
    5102              :                       "SEQUENCE", "SUBSCRIPTION", "TABLESPACE", "TYPE", "VIEW");
    5103            0 :     else if (Matches("SECURITY", "LABEL", "ON", MatchAny, MatchAny))
    5104            0 :         COMPLETE_WITH("IS");
    5105              : 
    5106              : /* SELECT */
    5107              :     /* naah . . . */
    5108              : 
    5109              : /* SET, RESET, SHOW */
    5110              :     /* Complete with a variable name */
    5111            0 :     else if (TailMatches("SET|RESET") &&
    5112              :              !TailMatches("UPDATE", MatchAny, "SET") &&
    5113            3 :              !TailMatches("ALTER", "DATABASE|USER|ROLE", MatchAny, "RESET"))
    5114            3 :         COMPLETE_WITH_QUERY_VERBATIM_PLUS(Query_for_list_of_set_vars,
    5115              :                                           "CONSTRAINTS",
    5116              :                                           "TRANSACTION",
    5117              :                                           "SESSION",
    5118              :                                           "ROLE",
    5119              :                                           "TABLESPACE",
    5120              :                                           "ALL");
    5121            3 :     else if (Matches("SHOW"))
    5122            0 :         COMPLETE_WITH_QUERY_VERBATIM_PLUS(Query_for_list_of_show_vars,
    5123              :                                           "SESSION AUTHORIZATION",
    5124              :                                           "ALL");
    5125            0 :     else if (Matches("SHOW", "SESSION"))
    5126            0 :         COMPLETE_WITH("AUTHORIZATION");
    5127              :     /* Complete "SET TRANSACTION" */
    5128            0 :     else if (Matches("SET", "TRANSACTION"))
    5129            0 :         COMPLETE_WITH("SNAPSHOT", "ISOLATION LEVEL", "READ", "DEFERRABLE", "NOT DEFERRABLE");
    5130            0 :     else if (Matches("BEGIN|START", "TRANSACTION") ||
    5131              :              Matches("BEGIN", "WORK") ||
    5132              :              Matches("BEGIN") ||
    5133              :              Matches("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION"))
    5134            0 :         COMPLETE_WITH("ISOLATION LEVEL", "READ", "DEFERRABLE", "NOT DEFERRABLE");
    5135            0 :     else if (Matches("SET|BEGIN|START", "TRANSACTION|WORK", "NOT") ||
    5136              :              Matches("BEGIN", "NOT") ||
    5137              :              Matches("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "NOT"))
    5138            0 :         COMPLETE_WITH("DEFERRABLE");
    5139            0 :     else if (Matches("SET|BEGIN|START", "TRANSACTION|WORK", "ISOLATION") ||
    5140              :              Matches("BEGIN", "ISOLATION") ||
    5141              :              Matches("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "ISOLATION"))
    5142            0 :         COMPLETE_WITH("LEVEL");
    5143            0 :     else if (Matches("SET|BEGIN|START", "TRANSACTION|WORK", "ISOLATION", "LEVEL") ||
    5144              :              Matches("BEGIN", "ISOLATION", "LEVEL") ||
    5145              :              Matches("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "ISOLATION", "LEVEL"))
    5146            0 :         COMPLETE_WITH("READ", "REPEATABLE READ", "SERIALIZABLE");
    5147            0 :     else if (Matches("SET|BEGIN|START", "TRANSACTION|WORK", "ISOLATION", "LEVEL", "READ") ||
    5148              :              Matches("BEGIN", "ISOLATION", "LEVEL", "READ") ||
    5149              :              Matches("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "ISOLATION", "LEVEL", "READ"))
    5150            0 :         COMPLETE_WITH("UNCOMMITTED", "COMMITTED");
    5151            0 :     else if (Matches("SET|BEGIN|START", "TRANSACTION|WORK", "ISOLATION", "LEVEL", "REPEATABLE") ||
    5152              :              Matches("BEGIN", "ISOLATION", "LEVEL", "REPEATABLE") ||
    5153              :              Matches("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "ISOLATION", "LEVEL", "REPEATABLE"))
    5154            0 :         COMPLETE_WITH("READ");
    5155            0 :     else if (Matches("SET|BEGIN|START", "TRANSACTION|WORK", "READ") ||
    5156              :              Matches("BEGIN", "READ") ||
    5157              :              Matches("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "READ"))
    5158            0 :         COMPLETE_WITH("ONLY", "WRITE");
    5159              :     /* SET CONSTRAINTS */
    5160            0 :     else if (Matches("SET", "CONSTRAINTS"))
    5161            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_constraints_with_schema,
    5162              :                                         "ALL");
    5163              :     /* Complete SET CONSTRAINTS <foo> with DEFERRED|IMMEDIATE */
    5164            0 :     else if (Matches("SET", "CONSTRAINTS", MatchAny))
    5165            0 :         COMPLETE_WITH("DEFERRED", "IMMEDIATE");
    5166              :     /* Complete SET ROLE */
    5167            0 :     else if (Matches("SET", "ROLE"))
    5168            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_roles);
    5169              :     /* Complete SET SESSION with AUTHORIZATION or CHARACTERISTICS... */
    5170            0 :     else if (Matches("SET", "SESSION"))
    5171            0 :         COMPLETE_WITH("AUTHORIZATION", "CHARACTERISTICS AS TRANSACTION");
    5172              :     /* Complete SET SESSION AUTHORIZATION with username */
    5173            0 :     else if (Matches("SET", "SESSION", "AUTHORIZATION"))
    5174            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_roles,
    5175              :                                  "DEFAULT");
    5176              :     /* Complete RESET SESSION with AUTHORIZATION */
    5177            0 :     else if (Matches("RESET", "SESSION"))
    5178            0 :         COMPLETE_WITH("AUTHORIZATION");
    5179              :     /* Complete SET <var> with "TO" */
    5180            0 :     else if (Matches("SET", MatchAny))
    5181            2 :         COMPLETE_WITH("TO");
    5182              : 
    5183              :     /*
    5184              :      * Complete ALTER DATABASE|FUNCTION|PROCEDURE|ROLE|ROUTINE|USER ... SET
    5185              :      * <name>
    5186              :      */
    5187            2 :     else if (Matches("ALTER", "DATABASE|FUNCTION|PROCEDURE|ROLE|ROUTINE|USER", MatchAnyN, "SET", MatchAnyExcept("SCHEMA")))
    5188            0 :         COMPLETE_WITH("FROM CURRENT", "TO");
    5189              : 
    5190              :     /*
    5191              :      * Suggest possible variable values in SET variable TO|=, along with the
    5192              :      * preceding ALTER syntaxes.
    5193              :      */
    5194            0 :     else if (TailMatches("SET", MatchAny, "TO|=") &&
    5195            4 :              !TailMatches("UPDATE", MatchAny, "SET", MatchAny, "TO|="))
    5196              :     {
    5197              :         /* special cased code for individual GUCs */
    5198            4 :         if (TailMatches("DateStyle", "TO|="))
    5199            0 :             COMPLETE_WITH("ISO", "SQL", "Postgres", "German",
    5200              :                           "YMD", "DMY", "MDY",
    5201              :                           "US", "European", "NonEuropean",
    5202              :                           "DEFAULT");
    5203            4 :         else if (TailMatches("search_path", "TO|="))
    5204              :         {
    5205              :             /* Here, we want to allow pg_catalog, so use narrower exclusion */
    5206            0 :             COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_schemas
    5207              :                                      " AND nspname NOT LIKE E'pg\\\\_toast%%'"
    5208              :                                      " AND nspname NOT LIKE E'pg\\\\_temp%%'",
    5209              :                                      "DEFAULT");
    5210              :         }
    5211            4 :         else if (TailMatches("TimeZone", "TO|="))
    5212            2 :             COMPLETE_WITH_TIMEZONE_NAME();
    5213              :         else
    5214              :         {
    5215              :             /* generic, type based, GUC support */
    5216            2 :             char       *guctype = get_guctype(prev2_wd);
    5217              : 
    5218              :             /*
    5219              :              * Note: if we don't recognize the GUC name, it's important to not
    5220              :              * offer any completions, as most likely we've misinterpreted the
    5221              :              * context and this isn't a GUC-setting command at all.
    5222              :              */
    5223            2 :             if (guctype)
    5224              :             {
    5225            2 :                 if (strcmp(guctype, "enum") == 0)
    5226              :                 {
    5227            2 :                     set_completion_reference_verbatim(prev2_wd);
    5228            2 :                     COMPLETE_WITH_QUERY_PLUS(Query_for_values_of_enum_GUC,
    5229              :                                              "DEFAULT");
    5230              :                 }
    5231            0 :                 else if (strcmp(guctype, "bool") == 0)
    5232            0 :                     COMPLETE_WITH("on", "off", "true", "false", "yes", "no",
    5233              :                                   "1", "0", "DEFAULT");
    5234              :                 else
    5235            0 :                     COMPLETE_WITH("DEFAULT");
    5236              : 
    5237            2 :                 free(guctype);
    5238              :             }
    5239              :         }
    5240              :     }
    5241              : 
    5242              : /* START TRANSACTION */
    5243            4 :     else if (Matches("START"))
    5244            0 :         COMPLETE_WITH("TRANSACTION");
    5245              : 
    5246              : /* TABLE, but not TABLE embedded in other commands */
    5247            0 :     else if (Matches("TABLE"))
    5248            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_selectables);
    5249              : 
    5250              : /* TABLESAMPLE */
    5251            0 :     else if (TailMatches("TABLESAMPLE"))
    5252            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_tablesample_methods);
    5253            0 :     else if (TailMatches("TABLESAMPLE", MatchAny))
    5254            0 :         COMPLETE_WITH("(");
    5255              : 
    5256              : /* TRUNCATE */
    5257            0 :     else if (Matches("TRUNCATE"))
    5258            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_truncatables,
    5259              :                                         "TABLE", "ONLY");
    5260            0 :     else if (Matches("TRUNCATE", "TABLE"))
    5261            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_truncatables,
    5262              :                                         "ONLY");
    5263            0 :     else if (Matches("TRUNCATE", MatchAnyN, "ONLY"))
    5264            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_truncatables);
    5265            0 :     else if (Matches("TRUNCATE", MatchAny) ||
    5266              :              Matches("TRUNCATE", "TABLE|ONLY", MatchAny) ||
    5267              :              Matches("TRUNCATE", "TABLE", "ONLY", MatchAny))
    5268            0 :         COMPLETE_WITH("RESTART IDENTITY", "CONTINUE IDENTITY", "CASCADE", "RESTRICT");
    5269            0 :     else if (Matches("TRUNCATE", MatchAnyN, "IDENTITY"))
    5270            0 :         COMPLETE_WITH("CASCADE", "RESTRICT");
    5271              : 
    5272              : /* UNLISTEN */
    5273            0 :     else if (Matches("UNLISTEN"))
    5274            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_channels, "*");
    5275              : 
    5276              : /* UPDATE --- can be inside EXPLAIN, RULE, etc */
    5277              :     /* If prev. word is UPDATE suggest a list of tables */
    5278            0 :     else if (TailMatches("UPDATE"))
    5279            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_updatables);
    5280              :     /* Complete UPDATE <table> with "SET" */
    5281            0 :     else if (TailMatches("UPDATE", MatchAny))
    5282            0 :         COMPLETE_WITH("SET");
    5283              :     /* Complete UPDATE <table> SET with list of attributes */
    5284            0 :     else if (TailMatches("UPDATE", MatchAny, "SET"))
    5285            0 :         COMPLETE_WITH_ATTR(prev2_wd);
    5286              :     /* UPDATE <table> SET <attr> = */
    5287            0 :     else if (TailMatches("UPDATE", MatchAny, "SET", MatchAnyExcept("*=")))
    5288            0 :         COMPLETE_WITH("=");
    5289              : 
    5290              : /* USER MAPPING */
    5291            0 :     else if (Matches("ALTER|CREATE|DROP", "USER", "MAPPING"))
    5292            0 :         COMPLETE_WITH("FOR");
    5293            0 :     else if (Matches("CREATE", "USER", "MAPPING", "FOR"))
    5294            0 :         COMPLETE_WITH_QUERY_PLUS(Query_for_list_of_roles,
    5295              :                                  "CURRENT_ROLE",
    5296              :                                  "CURRENT_USER",
    5297              :                                  "PUBLIC",
    5298              :                                  "USER");
    5299            0 :     else if (Matches("ALTER|DROP", "USER", "MAPPING", "FOR"))
    5300            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_user_mappings);
    5301            0 :     else if (Matches("CREATE|ALTER|DROP", "USER", "MAPPING", "FOR", MatchAny))
    5302            0 :         COMPLETE_WITH("SERVER");
    5303            0 :     else if (Matches("CREATE|ALTER", "USER", "MAPPING", "FOR", MatchAny, "SERVER", MatchAny))
    5304            0 :         COMPLETE_WITH("OPTIONS");
    5305              : 
    5306              : /*
    5307              :  * VACUUM [ ( option [, ...] ) ] [ [ ONLY ] table_and_columns [, ...] ]
    5308              :  * VACUUM [ FULL ] [ FREEZE ] [ VERBOSE ] [ ANALYZE ] [ [ ONLY ] table_and_columns [, ...] ]
    5309              :  */
    5310            0 :     else if (Matches("VACUUM"))
    5311            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_vacuumables,
    5312              :                                         "(",
    5313              :                                         "FULL",
    5314              :                                         "FREEZE",
    5315              :                                         "VERBOSE",
    5316              :                                         "ANALYZE",
    5317              :                                         "ONLY");
    5318            0 :     else if (HeadMatches("VACUUM", "(*") &&
    5319            0 :              !HeadMatches("VACUUM", "(*)"))
    5320              :     {
    5321              :         /*
    5322              :          * This fires if we're in an unfinished parenthesized option list.
    5323              :          * get_previous_words treats a completed parenthesized option list as
    5324              :          * one word, so the above test is correct.
    5325              :          */
    5326            0 :         if (ends_with(prev_wd, '(') || ends_with(prev_wd, ','))
    5327            0 :             COMPLETE_WITH("FULL", "FREEZE", "ANALYZE", "VERBOSE",
    5328              :                           "DISABLE_PAGE_SKIPPING", "SKIP_LOCKED",
    5329              :                           "INDEX_CLEANUP", "PROCESS_MAIN", "PROCESS_TOAST",
    5330              :                           "TRUNCATE", "PARALLEL", "SKIP_DATABASE_STATS",
    5331              :                           "ONLY_DATABASE_STATS", "BUFFER_USAGE_LIMIT");
    5332            0 :         else if (TailMatches("FULL|FREEZE|ANALYZE|VERBOSE|DISABLE_PAGE_SKIPPING|SKIP_LOCKED|PROCESS_MAIN|PROCESS_TOAST|TRUNCATE|SKIP_DATABASE_STATS|ONLY_DATABASE_STATS"))
    5333            0 :             COMPLETE_WITH("ON", "OFF");
    5334            0 :         else if (TailMatches("INDEX_CLEANUP"))
    5335            0 :             COMPLETE_WITH("AUTO", "ON", "OFF");
    5336              :     }
    5337            0 :     else if (Matches("VACUUM", "(*)"))
    5338            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_vacuumables,
    5339              :                                         "ONLY");
    5340            0 :     else if (Matches("VACUUM", "FULL"))
    5341            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_vacuumables,
    5342              :                                         "FREEZE",
    5343              :                                         "VERBOSE",
    5344              :                                         "ANALYZE",
    5345              :                                         "ONLY");
    5346            0 :     else if (Matches("VACUUM", MatchAnyN, "FREEZE"))
    5347            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_vacuumables,
    5348              :                                         "VERBOSE",
    5349              :                                         "ANALYZE",
    5350              :                                         "ONLY");
    5351            0 :     else if (Matches("VACUUM", MatchAnyN, "VERBOSE"))
    5352            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_vacuumables,
    5353              :                                         "ANALYZE",
    5354              :                                         "ONLY");
    5355            0 :     else if (Matches("VACUUM", MatchAnyN, "ANALYZE"))
    5356            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_vacuumables,
    5357              :                                         "ONLY");
    5358            0 :     else if (Matches("VACUUM", MatchAnyN, "("))
    5359              :         /* "VACUUM (" should be caught above, so assume we want columns */
    5360            0 :         COMPLETE_WITH_ATTR(prev2_wd);
    5361            0 :     else if (HeadMatches("VACUUM"))
    5362            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_vacuumables);
    5363              : 
    5364              : /*
    5365              :  * WAIT FOR LSN '<lsn>' [ WITH ( option [, ...] ) ]
    5366              :  * where option can be:
    5367              :  *   MODE '<mode>'
    5368              :  *   TIMEOUT '<timeout>'
    5369              :  *   NO_THROW
    5370              :  * and mode can be:
    5371              :  *   standby_replay | standby_write | standby_flush | primary_flush
    5372              :  */
    5373            0 :     else if (Matches("WAIT"))
    5374            0 :         COMPLETE_WITH("FOR");
    5375            0 :     else if (Matches("WAIT", "FOR"))
    5376            0 :         COMPLETE_WITH("LSN");
    5377            0 :     else if (Matches("WAIT", "FOR", "LSN"))
    5378              :         /* No completion for LSN value - user must provide manually */
    5379              :         ;
    5380            0 :     else if (Matches("WAIT", "FOR", "LSN", MatchAny))
    5381            0 :         COMPLETE_WITH("WITH");
    5382            0 :     else if (Matches("WAIT", "FOR", "LSN", MatchAny, "WITH"))
    5383            0 :         COMPLETE_WITH("(");
    5384              : 
    5385              :     /*
    5386              :      * Handle parenthesized option list.  This fires when we're in an
    5387              :      * unfinished parenthesized option list.  get_previous_words treats a
    5388              :      * completed parenthesized option list as one word, so the above test is
    5389              :      * correct.
    5390              :      *
    5391              :      * 'mode' takes a string value (one of the listed above), 'timeout' takes
    5392              :      * a string value, and 'no_throw' takes no value.  We do not offer
    5393              :      * completions for the *values* of 'timeout' or 'no_throw'.
    5394              :      */
    5395            0 :     else if (HeadMatches("WAIT", "FOR", "LSN", MatchAny, "WITH", "(*") &&
    5396            0 :              !HeadMatches("WAIT", "FOR", "LSN", MatchAny, "WITH", "(*)"))
    5397              :     {
    5398            0 :         if (ends_with(prev_wd, '(') || ends_with(prev_wd, ','))
    5399            0 :             COMPLETE_WITH("mode", "timeout", "no_throw");
    5400            0 :         else if (TailMatches("mode"))
    5401            0 :             COMPLETE_WITH("'standby_replay'", "'standby_write'", "'standby_flush'", "'primary_flush'");
    5402              :     }
    5403              : 
    5404              : /* WITH [RECURSIVE] */
    5405              : 
    5406              :     /*
    5407              :      * Only match when WITH is the first word, as WITH may appear in many
    5408              :      * other contexts.
    5409              :      */
    5410            0 :     else if (Matches("WITH"))
    5411            0 :         COMPLETE_WITH("RECURSIVE");
    5412              : 
    5413              : /* WHERE */
    5414              :     /* Simple case of the word before the where being the table name */
    5415            0 :     else if (TailMatches(MatchAny, "WHERE"))
    5416            0 :         COMPLETE_WITH_ATTR(prev2_wd);
    5417              : 
    5418              : /* ... FROM ... */
    5419              : /* TODO: also include SRF ? */
    5420           14 :     else if (TailMatches("FROM") && !Matches("COPY|\\copy", MatchAny, "FROM"))
    5421           14 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_selectables);
    5422              : 
    5423              : /* ... JOIN ... */
    5424           14 :     else if (TailMatches("JOIN"))
    5425            0 :         COMPLETE_WITH_SCHEMA_QUERY_PLUS(Query_for_list_of_selectables, "LATERAL");
    5426            0 :     else if (TailMatches("JOIN", MatchAny) && !TailMatches("CROSS|NATURAL", "JOIN", MatchAny))
    5427            0 :         COMPLETE_WITH("ON", "USING (");
    5428            0 :     else if (TailMatches("JOIN", MatchAny, MatchAny) &&
    5429            0 :              !TailMatches("CROSS|NATURAL", "JOIN", MatchAny, MatchAny) && !TailMatches("ON|USING"))
    5430            0 :         COMPLETE_WITH("ON", "USING (");
    5431            0 :     else if (TailMatches("JOIN", "LATERAL", MatchAny, MatchAny) &&
    5432            0 :              !TailMatches("CROSS|NATURAL", "JOIN", "LATERAL", MatchAny, MatchAny) && !TailMatches("ON|USING"))
    5433            0 :         COMPLETE_WITH("ON", "USING (");
    5434            0 :     else if (TailMatches("JOIN", MatchAny, "USING") ||
    5435              :              TailMatches("JOIN", MatchAny, MatchAny, "USING") ||
    5436              :              TailMatches("JOIN", "LATERAL", MatchAny, MatchAny, "USING"))
    5437            0 :         COMPLETE_WITH("(");
    5438            0 :     else if (TailMatches("JOIN", MatchAny, "USING", "("))
    5439            0 :         COMPLETE_WITH_ATTR(prev3_wd);
    5440            0 :     else if (TailMatches("JOIN", MatchAny, MatchAny, "USING", "("))
    5441            0 :         COMPLETE_WITH_ATTR(prev4_wd);
    5442              : 
    5443              : /* ... AT [ LOCAL | TIME ZONE ] ... */
    5444            0 :     else if (TailMatches("AT"))
    5445            0 :         COMPLETE_WITH("LOCAL", "TIME ZONE");
    5446            0 :     else if (TailMatches("AT", "TIME", "ZONE"))
    5447            0 :         COMPLETE_WITH_TIMEZONE_NAME();
    5448              : 
    5449              : /* Backslash commands */
    5450              : /* TODO:  \dc \dd \dl */
    5451            0 :     else if (TailMatchesCS("\\?"))
    5452            0 :         COMPLETE_WITH_CS("commands", "options", "variables");
    5453            0 :     else if (TailMatchesCS("\\connect|\\c"))
    5454              :     {
    5455            0 :         if (!recognized_connection_string(text))
    5456            0 :             COMPLETE_WITH_QUERY(Query_for_list_of_databases);
    5457              :     }
    5458            0 :     else if (TailMatchesCS("\\connect|\\c", MatchAny))
    5459              :     {
    5460            0 :         if (!recognized_connection_string(prev_wd))
    5461            0 :             COMPLETE_WITH_QUERY(Query_for_list_of_roles);
    5462              :     }
    5463            0 :     else if (TailMatchesCS("\\da*"))
    5464            0 :         COMPLETE_WITH_VERSIONED_SCHEMA_QUERY(Query_for_list_of_aggregates);
    5465            0 :     else if (TailMatchesCS("\\dAc*", MatchAny) ||
    5466              :              TailMatchesCS("\\dAf*", MatchAny))
    5467            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_datatypes);
    5468            0 :     else if (TailMatchesCS("\\dAo*", MatchAny) ||
    5469              :              TailMatchesCS("\\dAp*", MatchAny))
    5470            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_operator_families);
    5471            0 :     else if (TailMatchesCS("\\dA*"))
    5472            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_access_methods);
    5473            0 :     else if (TailMatchesCS("\\db*"))
    5474            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_tablespaces);
    5475            0 :     else if (TailMatchesCS("\\dconfig*"))
    5476            0 :         COMPLETE_WITH_QUERY_VERBATIM(Query_for_list_of_show_vars);
    5477            0 :     else if (TailMatchesCS("\\dD*"))
    5478            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_domains);
    5479            0 :     else if (TailMatchesCS("\\des*"))
    5480            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_servers);
    5481            0 :     else if (TailMatchesCS("\\deu*"))
    5482            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_user_mappings);
    5483            0 :     else if (TailMatchesCS("\\dew*"))
    5484            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_fdws);
    5485            0 :     else if (TailMatchesCS("\\df*"))
    5486            0 :         COMPLETE_WITH_VERSIONED_SCHEMA_QUERY(Query_for_list_of_functions);
    5487            0 :     else if (HeadMatchesCS("\\df*"))
    5488            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_datatypes);
    5489              : 
    5490            0 :     else if (TailMatchesCS("\\dFd*"))
    5491            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_ts_dictionaries);
    5492            0 :     else if (TailMatchesCS("\\dFp*"))
    5493            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_ts_parsers);
    5494            0 :     else if (TailMatchesCS("\\dFt*"))
    5495            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_ts_templates);
    5496              :     /* must be at end of \dF alternatives: */
    5497            0 :     else if (TailMatchesCS("\\dF*"))
    5498            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_ts_configurations);
    5499              : 
    5500            0 :     else if (TailMatchesCS("\\di*"))
    5501            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexes);
    5502            0 :     else if (TailMatchesCS("\\dL*"))
    5503            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_languages);
    5504            0 :     else if (TailMatchesCS("\\dn*"))
    5505            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_schemas);
    5506              :     /* no support for completing operators, but we can complete types: */
    5507            0 :     else if (HeadMatchesCS("\\do*", MatchAny))
    5508            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_datatypes);
    5509            0 :     else if (TailMatchesCS("\\dp") || TailMatchesCS("\\z"))
    5510            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_grantables);
    5511            0 :     else if (TailMatchesCS("\\dPi*"))
    5512            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_partitioned_indexes);
    5513            0 :     else if (TailMatchesCS("\\dPt*"))
    5514            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_partitioned_tables);
    5515            0 :     else if (TailMatchesCS("\\dP*"))
    5516            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_partitioned_relations);
    5517            0 :     else if (TailMatchesCS("\\dRp*"))
    5518            0 :         COMPLETE_WITH_VERSIONED_QUERY(Query_for_list_of_publications);
    5519            0 :     else if (TailMatchesCS("\\dRs*"))
    5520            0 :         COMPLETE_WITH_VERSIONED_QUERY(Query_for_list_of_subscriptions);
    5521            0 :     else if (TailMatchesCS("\\ds*"))
    5522            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_sequences);
    5523            0 :     else if (TailMatchesCS("\\dt*"))
    5524            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables);
    5525            0 :     else if (TailMatchesCS("\\dT*"))
    5526            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_datatypes);
    5527            0 :     else if (TailMatchesCS("\\du*") ||
    5528              :              TailMatchesCS("\\dg*") ||
    5529              :              TailMatchesCS("\\drg*"))
    5530            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_roles);
    5531            0 :     else if (TailMatchesCS("\\dv*"))
    5532            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_views);
    5533            0 :     else if (TailMatchesCS("\\dx*"))
    5534            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_extensions);
    5535            0 :     else if (TailMatchesCS("\\dX*"))
    5536            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_statistics);
    5537            0 :     else if (TailMatchesCS("\\dm*"))
    5538            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_matviews);
    5539            0 :     else if (TailMatchesCS("\\dE*"))
    5540            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_foreign_tables);
    5541            0 :     else if (TailMatchesCS("\\dy*"))
    5542            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_event_triggers);
    5543              : 
    5544              :     /* must be at end of \d alternatives: */
    5545            0 :     else if (TailMatchesCS("\\d*"))
    5546            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_relations);
    5547              : 
    5548            0 :     else if (TailMatchesCS("\\ef"))
    5549            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_routines);
    5550            0 :     else if (TailMatchesCS("\\ev"))
    5551            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_views);
    5552              : 
    5553            0 :     else if (TailMatchesCS("\\encoding"))
    5554            0 :         COMPLETE_WITH_QUERY_VERBATIM(Query_for_list_of_encodings);
    5555            0 :     else if (TailMatchesCS("\\h|\\help"))
    5556            0 :         COMPLETE_WITH_LIST(sql_commands);
    5557            0 :     else if (TailMatchesCS("\\h|\\help", MatchAny))
    5558              :     {
    5559            0 :         if (TailMatches("DROP"))
    5560            0 :             COMPLETE_WITH_GENERATOR(drop_command_generator);
    5561            0 :         else if (TailMatches("ALTER"))
    5562            0 :             COMPLETE_WITH_GENERATOR(alter_command_generator);
    5563              : 
    5564              :         /*
    5565              :          * CREATE is recognized by tail match elsewhere, so doesn't need to be
    5566              :          * repeated here
    5567              :          */
    5568              :     }
    5569            0 :     else if (TailMatchesCS("\\h|\\help", MatchAny, MatchAny))
    5570              :     {
    5571            0 :         if (TailMatches("CREATE|DROP", "ACCESS"))
    5572            0 :             COMPLETE_WITH("METHOD");
    5573            0 :         else if (TailMatches("ALTER", "DEFAULT"))
    5574            0 :             COMPLETE_WITH("PRIVILEGES");
    5575            0 :         else if (TailMatches("CREATE|ALTER|DROP", "EVENT"))
    5576            0 :             COMPLETE_WITH("TRIGGER");
    5577            0 :         else if (TailMatches("CREATE|ALTER|DROP", "FOREIGN"))
    5578            0 :             COMPLETE_WITH("DATA WRAPPER", "TABLE");
    5579            0 :         else if (TailMatches("ALTER", "LARGE"))
    5580            0 :             COMPLETE_WITH("OBJECT");
    5581            0 :         else if (TailMatches("CREATE|ALTER|DROP", "MATERIALIZED"))
    5582            0 :             COMPLETE_WITH("VIEW");
    5583            0 :         else if (TailMatches("CREATE|ALTER|DROP", "TEXT"))
    5584            0 :             COMPLETE_WITH("SEARCH");
    5585            0 :         else if (TailMatches("CREATE|ALTER|DROP", "USER"))
    5586            0 :             COMPLETE_WITH("MAPPING FOR");
    5587              :     }
    5588            0 :     else if (TailMatchesCS("\\h|\\help", MatchAny, MatchAny, MatchAny))
    5589              :     {
    5590            0 :         if (TailMatches("CREATE|ALTER|DROP", "FOREIGN", "DATA"))
    5591            0 :             COMPLETE_WITH("WRAPPER");
    5592            0 :         else if (TailMatches("CREATE|ALTER|DROP", "TEXT", "SEARCH"))
    5593            0 :             COMPLETE_WITH("CONFIGURATION", "DICTIONARY", "PARSER", "TEMPLATE");
    5594            0 :         else if (TailMatches("CREATE|ALTER|DROP", "USER", "MAPPING"))
    5595            0 :             COMPLETE_WITH("FOR");
    5596              :     }
    5597            2 :     else if (TailMatchesCS("\\l*") && !TailMatchesCS("\\lo*"))
    5598            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_databases);
    5599            2 :     else if (TailMatchesCS("\\password"))
    5600            0 :         COMPLETE_WITH_QUERY(Query_for_list_of_roles);
    5601            0 :     else if (TailMatchesCS("\\pset"))
    5602            0 :         COMPLETE_WITH_CS("border", "columns", "csv_fieldsep",
    5603              :                          "display_false", "display_true", "expanded",
    5604              :                          "fieldsep", "fieldsep_zero", "footer", "format",
    5605              :                          "linestyle", "null", "numericlocale",
    5606              :                          "pager", "pager_min_lines",
    5607              :                          "recordsep", "recordsep_zero",
    5608              :                          "tableattr", "title", "tuples_only",
    5609              :                          "unicode_border_linestyle",
    5610              :                          "unicode_column_linestyle",
    5611              :                          "unicode_header_linestyle",
    5612              :                          "xheader_width");
    5613            0 :     else if (TailMatchesCS("\\pset", MatchAny))
    5614              :     {
    5615            0 :         if (TailMatchesCS("format"))
    5616            0 :             COMPLETE_WITH_CS("aligned", "asciidoc", "csv", "html", "latex",
    5617              :                              "latex-longtable", "troff-ms", "unaligned",
    5618              :                              "wrapped");
    5619            0 :         else if (TailMatchesCS("xheader_width"))
    5620            0 :             COMPLETE_WITH_CS("full", "column", "page");
    5621            0 :         else if (TailMatchesCS("linestyle"))
    5622            0 :             COMPLETE_WITH_CS("ascii", "old-ascii", "unicode");
    5623            0 :         else if (TailMatchesCS("pager"))
    5624            0 :             COMPLETE_WITH_CS("on", "off", "always");
    5625            0 :         else if (TailMatchesCS("unicode_border_linestyle|"
    5626              :                                "unicode_column_linestyle|"
    5627              :                                "unicode_header_linestyle"))
    5628            0 :             COMPLETE_WITH_CS("single", "double");
    5629              :     }
    5630            0 :     else if (TailMatchesCS("\\unset"))
    5631            0 :         matches = complete_from_variables(text, "", "", true);
    5632            0 :     else if (TailMatchesCS("\\set"))
    5633            1 :         matches = complete_from_variables(text, "", "", false);
    5634            1 :     else if (TailMatchesCS("\\set", MatchAny))
    5635              :     {
    5636            1 :         if (TailMatchesCS("AUTOCOMMIT|ON_ERROR_STOP|QUIET|SHOW_ALL_RESULTS|"
    5637              :                           "SINGLELINE|SINGLESTEP"))
    5638            0 :             COMPLETE_WITH_CS("on", "off");
    5639            1 :         else if (TailMatchesCS("COMP_KEYWORD_CASE"))
    5640            0 :             COMPLETE_WITH_CS("lower", "upper",
    5641              :                              "preserve-lower", "preserve-upper");
    5642            1 :         else if (TailMatchesCS("ECHO"))
    5643            0 :             COMPLETE_WITH_CS("errors", "queries", "all", "none");
    5644            1 :         else if (TailMatchesCS("ECHO_HIDDEN"))
    5645            0 :             COMPLETE_WITH_CS("noexec", "off", "on");
    5646            1 :         else if (TailMatchesCS("HISTCONTROL"))
    5647            0 :             COMPLETE_WITH_CS("ignorespace", "ignoredups",
    5648              :                              "ignoreboth", "none");
    5649            1 :         else if (TailMatchesCS("ON_ERROR_ROLLBACK"))
    5650            0 :             COMPLETE_WITH_CS("on", "off", "interactive");
    5651            1 :         else if (TailMatchesCS("SHOW_CONTEXT"))
    5652            0 :             COMPLETE_WITH_CS("never", "errors", "always");
    5653            1 :         else if (TailMatchesCS("VERBOSITY"))
    5654            1 :             COMPLETE_WITH_CS("default", "verbose", "terse", "sqlstate");
    5655              :     }
    5656            1 :     else if (TailMatchesCS("\\sf*"))
    5657            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_routines);
    5658            0 :     else if (TailMatchesCS("\\sv*"))
    5659            0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_views);
    5660            0 :     else if (TailMatchesCS("\\cd|\\e|\\edit|\\g|\\gx|\\i|\\include|"
    5661              :                            "\\ir|\\include_relative|\\o|\\out|"
    5662              :                            "\\s|\\w|\\write|\\lo_import") ||
    5663              :              TailMatchesCS("\\lo_export", MatchAny))
    5664            2 :         COMPLETE_WITH_FILES("\\", false);
    5665              : 
    5666              :     /* gen_tabcomplete.pl ends special processing here */
    5667            2 :     /* END GEN_TABCOMPLETE */
    5668            0 : 
    5669           58 :     return matches;
    5670            0 : }
    5671              : 
    5672              : 
    5673              : /*
    5674              :  * GENERATOR FUNCTIONS
    5675              :  *
    5676              :  * These functions do all the actual work of completing the input. They get
    5677              :  * passed the text so far and the count how many times they have been called
    5678              :  * so far with the same text.
    5679              :  * If you read the above carefully, you'll see that these don't get called
    5680              :  * directly but through the readline interface.
    5681              :  * The return value is expected to be the full completion of the text, going
    5682              :  * through a list each time, or NULL if there are no more matches. The string
    5683              :  * will be free()'d by readline, so you must run it through strdup() or
    5684              :  * something of that sort.
    5685              :  */
    5686              : 
    5687              : /*
    5688              :  * Common routine for create_command_generator and drop_command_generator.
    5689              :  * Entries that have 'excluded' flags are not returned.
    5690              :  */
    5691              : static char *
    5692            4 : create_or_drop_command_generator(const char *text, int state, bits32 excluded)
    5693              : {
    5694              :     static int  list_index,
    5695              :                 string_length;
    5696              :     const char *name;
    5697              : 
    5698              :     /* If this is the first time for this completion, init some values */
    5699            4 :     if (state == 0)
    5700              :     {
    5701            2 :         list_index = 0;
    5702            2 :         string_length = strlen(text);
    5703              :     }
    5704              : 
    5705              :     /* find something that matches */
    5706          102 :     while ((name = words_after_create[list_index++].name))
    5707              :     {
    5708          100 :         if ((pg_strncasecmp(name, text, string_length) == 0) &&
    5709            2 :             !(words_after_create[list_index - 1].flags & excluded))
    5710            2 :             return pg_strdup_keyword_case(name, text);
    5711              :     }
    5712              :     /* if nothing matches, return NULL */
    5713            2 :     return NULL;
    5714              : }
    5715              : 
    5716              : /*
    5717              :  * This one gives you one from a list of things you can put after CREATE
    5718              :  * as defined above.
    5719              :  */
    5720              : static char *
    5721            2 : create_command_generator(const char *text, int state)
    5722              : {
    5723            2 :     return create_or_drop_command_generator(text, state, THING_NO_CREATE);
    5724              : }
    5725              : 
    5726              : /*
    5727              :  * This function gives you a list of things you can put after a DROP command.
    5728              :  */
    5729              : static char *
    5730            2 : drop_command_generator(const char *text, int state)
    5731              : {
    5732            2 :     return create_or_drop_command_generator(text, state, THING_NO_DROP);
    5733              : }
    5734              : 
    5735              : /*
    5736              :  * This function gives you a list of things you can put after an ALTER command.
    5737              :  */
    5738              : static char *
    5739            0 : alter_command_generator(const char *text, int state)
    5740              : {
    5741            0 :     return create_or_drop_command_generator(text, state, THING_NO_ALTER);
    5742              : }
    5743              : 
    5744              : /*
    5745              :  * These functions generate lists using server queries.
    5746              :  * They are all wrappers for _complete_from_query.
    5747              :  */
    5748              : 
    5749              : static char *
    5750          186 : complete_from_query(const char *text, int state)
    5751              : {
    5752              :     /* query is assumed to work for any server version */
    5753          186 :     return _complete_from_query(completion_charp, NULL, completion_charpp,
    5754              :                                 completion_verbatim, text, state);
    5755              : }
    5756              : 
    5757              : static char *
    5758            2 : complete_from_versioned_query(const char *text, int state)
    5759              : {
    5760            2 :     const VersionedQuery *vquery = completion_vquery;
    5761              : 
    5762              :     /* Find appropriate array element */
    5763            2 :     while (pset.sversion < vquery->min_server_version)
    5764            0 :         vquery++;
    5765              :     /* Fail completion if server is too old */
    5766            2 :     if (vquery->query == NULL)
    5767            0 :         return NULL;
    5768              : 
    5769            2 :     return _complete_from_query(vquery->query, NULL, completion_charpp,
    5770              :                                 completion_verbatim, text, state);
    5771              : }
    5772              : 
    5773              : static char *
    5774           86 : complete_from_schema_query(const char *text, int state)
    5775              : {
    5776              :     /* query is assumed to work for any server version */
    5777           86 :     return _complete_from_query(NULL, completion_squery, completion_charpp,
    5778              :                                 completion_verbatim, text, state);
    5779              : }
    5780              : 
    5781              : static char *
    5782            8 : complete_from_versioned_schema_query(const char *text, int state)
    5783              : {
    5784            8 :     const SchemaQuery *squery = completion_squery;
    5785              : 
    5786              :     /* Find appropriate array element */
    5787            8 :     while (pset.sversion < squery->min_server_version)
    5788            0 :         squery++;
    5789              :     /* Fail completion if server is too old */
    5790            8 :     if (squery->catname == NULL)
    5791            0 :         return NULL;
    5792              : 
    5793            8 :     return _complete_from_query(NULL, squery, completion_charpp,
    5794              :                                 completion_verbatim, text, state);
    5795              : }
    5796              : 
    5797              : 
    5798              : /*
    5799              :  * This creates a list of matching things, according to a query described by
    5800              :  * the initial arguments.  The caller has already done any work needed to
    5801              :  * select the appropriate query for the server's version.
    5802              :  *
    5803              :  * The query can be one of two kinds:
    5804              :  *
    5805              :  * 1. A simple query, which must contain a restriction clause of the form
    5806              :  *      output LIKE '%s'
    5807              :  * where "output" is the same string that the query returns.  The %s
    5808              :  * will be replaced by a LIKE pattern to match the already-typed text.
    5809              :  * There can be a second '%s', which will be replaced by a suitably-escaped
    5810              :  * version of the string provided in completion_ref_object.  If there is a
    5811              :  * third '%s', it will be replaced by a suitably-escaped version of the string
    5812              :  * provided in completion_ref_schema.  Those strings should be set up
    5813              :  * by calling set_completion_reference or set_completion_reference_verbatim.
    5814              :  * Simple queries should return a single column of matches.  If "verbatim"
    5815              :  * is true, the matches are returned as-is; otherwise, they are taken to
    5816              :  * be SQL identifiers and quoted if necessary.
    5817              :  *
    5818              :  * 2. A schema query used for completion of both schema and relation names.
    5819              :  * This is represented by a SchemaQuery object; see that typedef for details.
    5820              :  *
    5821              :  * See top of file for examples of both kinds of query.
    5822              :  *
    5823              :  * In addition to the query itself, we accept a null-terminated array of
    5824              :  * literal keywords, which will be returned if they match the input-so-far
    5825              :  * (case insensitively).  (These are in addition to keywords specified
    5826              :  * within the schema_query, if any.)
    5827              :  *
    5828              :  * If "verbatim" is true, then we use the given text as-is to match the
    5829              :  * query results; otherwise we parse it as a possibly-qualified identifier,
    5830              :  * and reconstruct suitable quoting afterward.
    5831              :  *
    5832              :  * "text" and "state" are supplied by Readline.  "text" is the word we are
    5833              :  * trying to complete.  "state" is zero on first call, nonzero later.
    5834              :  *
    5835              :  * readline will call this repeatedly with the same text and varying
    5836              :  * state.  On each call, we are supposed to return a malloc'd string
    5837              :  * that is a candidate completion.  Return NULL when done.
    5838              :  */
    5839              : static char *
    5840          282 : _complete_from_query(const char *simple_query,
    5841              :                      const SchemaQuery *schema_query,
    5842              :                      const char *const *keywords,
    5843              :                      bool verbatim,
    5844              :                      const char *text, int state)
    5845              : {
    5846              :     static int  list_index,
    5847              :                 num_schema_only,
    5848              :                 num_query_other,
    5849              :                 num_keywords;
    5850              :     static PGresult *result = NULL;
    5851              :     static bool non_empty_object;
    5852              :     static bool schemaquoted;
    5853              :     static bool objectquoted;
    5854              : 
    5855              :     /*
    5856              :      * If this is the first time for this completion, we fetch a list of our
    5857              :      * "things" from the backend.
    5858              :      */
    5859          282 :     if (state == 0)
    5860              :     {
    5861              :         PQExpBufferData query_buffer;
    5862              :         char       *schemaname;
    5863              :         char       *objectname;
    5864              :         char       *e_object_like;
    5865              :         char       *e_schemaname;
    5866              :         char       *e_ref_object;
    5867              :         char       *e_ref_schema;
    5868              : 
    5869              :         /* Reset static state, ensuring no memory leaks */
    5870           44 :         list_index = 0;
    5871           44 :         num_schema_only = 0;
    5872           44 :         num_query_other = 0;
    5873           44 :         num_keywords = 0;
    5874           44 :         PQclear(result);
    5875           44 :         result = NULL;
    5876              : 
    5877              :         /* Parse text, splitting into schema and object name if needed */
    5878           44 :         if (verbatim)
    5879              :         {
    5880            8 :             objectname = pg_strdup(text);
    5881            8 :             schemaname = NULL;
    5882              :         }
    5883              :         else
    5884              :         {
    5885           36 :             parse_identifier(text,
    5886              :                              &schemaname, &objectname,
    5887              :                              &schemaquoted, &objectquoted);
    5888              :         }
    5889              : 
    5890              :         /* Remember whether the user has typed anything in the object part */
    5891           44 :         non_empty_object = (*objectname != '\0');
    5892              : 
    5893              :         /*
    5894              :          * Convert objectname to a LIKE prefix pattern (e.g. 'foo%'), and set
    5895              :          * up suitably-escaped copies of all the strings we need.
    5896              :          */
    5897           44 :         e_object_like = make_like_pattern(objectname);
    5898              : 
    5899           44 :         if (schemaname)
    5900            3 :             e_schemaname = escape_string(schemaname);
    5901              :         else
    5902           41 :             e_schemaname = NULL;
    5903              : 
    5904           44 :         if (completion_ref_object)
    5905           21 :             e_ref_object = escape_string(completion_ref_object);
    5906              :         else
    5907           23 :             e_ref_object = NULL;
    5908              : 
    5909           44 :         if (completion_ref_schema)
    5910            1 :             e_ref_schema = escape_string(completion_ref_schema);
    5911              :         else
    5912           43 :             e_ref_schema = NULL;
    5913              : 
    5914           44 :         initPQExpBuffer(&query_buffer);
    5915              : 
    5916           44 :         if (schema_query)
    5917              :         {
    5918              :             Assert(simple_query == NULL);
    5919              : 
    5920              :             /*
    5921              :              * We issue different queries depending on whether the input is
    5922              :              * already qualified or not.  schema_query gives us the pieces to
    5923              :              * assemble.
    5924              :              */
    5925           36 :             if (schemaname == NULL || schema_query->namespace == NULL)
    5926              :             {
    5927              :                 /* Get unqualified names matching the input-so-far */
    5928           33 :                 appendPQExpBufferStr(&query_buffer, "SELECT ");
    5929           33 :                 if (schema_query->use_distinct)
    5930            0 :                     appendPQExpBufferStr(&query_buffer, "DISTINCT ");
    5931           33 :                 appendPQExpBuffer(&query_buffer,
    5932              :                                   "%s, NULL::pg_catalog.text FROM %s",
    5933           33 :                                   schema_query->result,
    5934           33 :                                   schema_query->catname);
    5935           33 :                 if (schema_query->refnamespace && completion_ref_schema)
    5936            1 :                     appendPQExpBufferStr(&query_buffer,
    5937              :                                          ", pg_catalog.pg_namespace nr");
    5938           33 :                 appendPQExpBufferStr(&query_buffer, " WHERE ");
    5939           33 :                 if (schema_query->selcondition)
    5940           33 :                     appendPQExpBuffer(&query_buffer, "%s AND ",
    5941           33 :                                       schema_query->selcondition);
    5942           33 :                 appendPQExpBuffer(&query_buffer, "(%s) LIKE '%s'",
    5943           33 :                                   schema_query->result,
    5944              :                                   e_object_like);
    5945           33 :                 if (schema_query->viscondition)
    5946           15 :                     appendPQExpBuffer(&query_buffer, " AND %s",
    5947           15 :                                       schema_query->viscondition);
    5948           33 :                 if (schema_query->refname)
    5949              :                 {
    5950              :                     Assert(completion_ref_object);
    5951           18 :                     appendPQExpBuffer(&query_buffer, " AND %s = '%s'",
    5952           18 :                                       schema_query->refname, e_ref_object);
    5953           18 :                     if (schema_query->refnamespace && completion_ref_schema)
    5954            1 :                         appendPQExpBuffer(&query_buffer,
    5955              :                                           " AND %s = nr.oid AND nr.nspname = '%s'",
    5956            1 :                                           schema_query->refnamespace,
    5957              :                                           e_ref_schema);
    5958           17 :                     else if (schema_query->refviscondition)
    5959           17 :                         appendPQExpBuffer(&query_buffer,
    5960              :                                           " AND %s",
    5961           17 :                                           schema_query->refviscondition);
    5962              :                 }
    5963              : 
    5964              :                 /*
    5965              :                  * When fetching relation names, suppress system catalogs
    5966              :                  * unless the input-so-far begins with "pg_".  This is a
    5967              :                  * compromise between not offering system catalogs for
    5968              :                  * completion at all, and having them swamp the result when
    5969              :                  * the input is just "p".
    5970              :                  */
    5971           33 :                 if (strcmp(schema_query->catname,
    5972           14 :                            "pg_catalog.pg_class c") == 0 &&
    5973           14 :                     strncmp(objectname, "pg_", 3) != 0)
    5974              :                 {
    5975           14 :                     appendPQExpBufferStr(&query_buffer,
    5976              :                                          " AND c.relnamespace <> (SELECT oid FROM"
    5977              :                                          " pg_catalog.pg_namespace WHERE nspname = 'pg_catalog')");
    5978              :                 }
    5979              : 
    5980              :                 /*
    5981              :                  * If the target object type can be schema-qualified, add in
    5982              :                  * schema names matching the input-so-far.
    5983              :                  */
    5984           33 :                 if (schema_query->namespace)
    5985              :                 {
    5986           15 :                     appendPQExpBuffer(&query_buffer, "\nUNION ALL\n"
    5987              :                                       "SELECT NULL::pg_catalog.text, n.nspname "
    5988              :                                       "FROM pg_catalog.pg_namespace n "
    5989              :                                       "WHERE n.nspname LIKE '%s'",
    5990              :                                       e_object_like);
    5991              : 
    5992              :                     /*
    5993              :                      * Likewise, suppress system schemas unless the
    5994              :                      * input-so-far begins with "pg_".
    5995              :                      */
    5996           15 :                     if (strncmp(objectname, "pg_", 3) != 0)
    5997           15 :                         appendPQExpBufferStr(&query_buffer,
    5998              :                                              " AND n.nspname NOT LIKE E'pg\\\\_%'");
    5999              : 
    6000              :                     /*
    6001              :                      * Since we're matching these schema names to the object
    6002              :                      * name, handle their quoting using the object name's
    6003              :                      * quoting state.
    6004              :                      */
    6005           15 :                     schemaquoted = objectquoted;
    6006              :                 }
    6007              :             }
    6008              :             else
    6009              :             {
    6010              :                 /* Input is qualified, so produce only qualified names */
    6011            3 :                 appendPQExpBufferStr(&query_buffer, "SELECT ");
    6012            3 :                 if (schema_query->use_distinct)
    6013            1 :                     appendPQExpBufferStr(&query_buffer, "DISTINCT ");
    6014            3 :                 appendPQExpBuffer(&query_buffer, "%s, n.nspname "
    6015              :                                   "FROM %s, pg_catalog.pg_namespace n",
    6016            3 :                                   schema_query->result,
    6017            3 :                                   schema_query->catname);
    6018            3 :                 if (schema_query->refnamespace && completion_ref_schema)
    6019            0 :                     appendPQExpBufferStr(&query_buffer,
    6020              :                                          ", pg_catalog.pg_namespace nr");
    6021            3 :                 appendPQExpBuffer(&query_buffer, " WHERE %s = n.oid AND ",
    6022            3 :                                   schema_query->namespace);
    6023            3 :                 if (schema_query->selcondition)
    6024            3 :                     appendPQExpBuffer(&query_buffer, "%s AND ",
    6025            3 :                                       schema_query->selcondition);
    6026            3 :                 appendPQExpBuffer(&query_buffer, "(%s) LIKE '%s' AND ",
    6027            3 :                                   schema_query->result,
    6028              :                                   e_object_like);
    6029            3 :                 appendPQExpBuffer(&query_buffer, "n.nspname = '%s'",
    6030              :                                   e_schemaname);
    6031            3 :                 if (schema_query->refname)
    6032              :                 {
    6033              :                     Assert(completion_ref_object);
    6034            1 :                     appendPQExpBuffer(&query_buffer, " AND %s = '%s'",
    6035            1 :                                       schema_query->refname, e_ref_object);
    6036            1 :                     if (schema_query->refnamespace && completion_ref_schema)
    6037            0 :                         appendPQExpBuffer(&query_buffer,
    6038              :                                           " AND %s = nr.oid AND nr.nspname = '%s'",
    6039            0 :                                           schema_query->refnamespace,
    6040              :                                           e_ref_schema);
    6041            1 :                     else if (schema_query->refviscondition)
    6042            0 :                         appendPQExpBuffer(&query_buffer,
    6043              :                                           " AND %s",
    6044            0 :                                           schema_query->refviscondition);
    6045              :                 }
    6046              :             }
    6047              :         }
    6048              :         else
    6049              :         {
    6050              :             Assert(simple_query);
    6051              :             /* simple_query is an sprintf-style format string */
    6052            8 :             appendPQExpBuffer(&query_buffer, simple_query,
    6053              :                               e_object_like,
    6054              :                               e_ref_object, e_ref_schema);
    6055              :         }
    6056              : 
    6057              :         /* Limit the number of records in the result */
    6058           44 :         appendPQExpBuffer(&query_buffer, "\nLIMIT %d",
    6059              :                           completion_max_records);
    6060              : 
    6061              :         /* Finally, we can issue the query */
    6062           44 :         result = exec_query(query_buffer.data);
    6063              : 
    6064              :         /* Clean up */
    6065           44 :         termPQExpBuffer(&query_buffer);
    6066           44 :         free(schemaname);
    6067           44 :         free(objectname);
    6068           44 :         free(e_object_like);
    6069           44 :         free(e_schemaname);
    6070           44 :         free(e_ref_object);
    6071           44 :         free(e_ref_schema);
    6072              :     }
    6073              : 
    6074              :     /* Return the next result, if any, but not if the query failed */
    6075          282 :     if (result && PQresultStatus(result) == PGRES_TUPLES_OK)
    6076              :     {
    6077              :         int         nskip;
    6078              : 
    6079          282 :         while (list_index < PQntuples(result))
    6080              :         {
    6081          213 :             const char *item = NULL;
    6082          213 :             const char *nsp = NULL;
    6083              : 
    6084          213 :             if (!PQgetisnull(result, list_index, 0))
    6085          212 :                 item = PQgetvalue(result, list_index, 0);
    6086          246 :             if (PQnfields(result) > 1 &&
    6087           33 :                 !PQgetisnull(result, list_index, 1))
    6088            4 :                 nsp = PQgetvalue(result, list_index, 1);
    6089          213 :             list_index++;
    6090              : 
    6091              :             /* In verbatim mode, we return all the items as-is */
    6092          213 :             if (verbatim)
    6093              :             {
    6094          182 :                 num_query_other++;
    6095          182 :                 return pg_strdup(item);
    6096              :             }
    6097              : 
    6098              :             /*
    6099              :              * In normal mode, a name requiring quoting will be returned only
    6100              :              * if the input was empty or quoted.  Otherwise the user might see
    6101              :              * completion inserting a quote she didn't type, which is
    6102              :              * surprising.  This restriction also dodges some odd behaviors of
    6103              :              * some versions of readline/libedit.
    6104              :              */
    6105           31 :             if (non_empty_object)
    6106              :             {
    6107           29 :                 if (item && !objectquoted && identifier_needs_quotes(item))
    6108            0 :                     continue;
    6109           29 :                 if (nsp && !schemaquoted && identifier_needs_quotes(nsp))
    6110            0 :                     continue;
    6111              :             }
    6112              : 
    6113              :             /* Count schema-only results for hack below */
    6114           31 :             if (item == NULL && nsp != NULL)
    6115            1 :                 num_schema_only++;
    6116              :             else
    6117           30 :                 num_query_other++;
    6118              : 
    6119           31 :             return requote_identifier(nsp, item, schemaquoted, objectquoted);
    6120              :         }
    6121              : 
    6122              :         /*
    6123              :          * When the query result is exhausted, check for hard-wired keywords.
    6124              :          * These will only be returned if they match the input-so-far,
    6125              :          * ignoring case.
    6126              :          */
    6127           69 :         nskip = list_index - PQntuples(result);
    6128           69 :         if (schema_query && schema_query->keywords)
    6129              :         {
    6130            2 :             const char *const *itemp = schema_query->keywords;
    6131              : 
    6132            9 :             while (*itemp)
    6133              :             {
    6134            8 :                 const char *item = *itemp++;
    6135              : 
    6136            8 :                 if (nskip-- > 0)
    6137            1 :                     continue;
    6138            7 :                 list_index++;
    6139            7 :                 if (pg_strncasecmp(text, item, strlen(text)) == 0)
    6140              :                 {
    6141            1 :                     num_keywords++;
    6142            1 :                     return pg_strdup_keyword_case(item, text);
    6143              :                 }
    6144              :             }
    6145              :         }
    6146           68 :         if (keywords)
    6147              :         {
    6148           44 :             const char *const *itemp = keywords;
    6149              : 
    6150          115 :             while (*itemp)
    6151              :             {
    6152           95 :                 const char *item = *itemp++;
    6153              : 
    6154           95 :                 if (nskip-- > 0)
    6155           36 :                     continue;
    6156           59 :                 list_index++;
    6157           59 :                 if (pg_strncasecmp(text, item, strlen(text)) == 0)
    6158              :                 {
    6159           24 :                     num_keywords++;
    6160           24 :                     return pg_strdup_keyword_case(item, text);
    6161              :                 }
    6162              :             }
    6163              :         }
    6164              :     }
    6165              : 
    6166              :     /*
    6167              :      * Hack: if we returned only bare schema names, don't let Readline add a
    6168              :      * space afterwards.  Otherwise the schema will stop being part of the
    6169              :      * completion subject text, which is not what we want.
    6170              :      */
    6171           44 :     if (num_schema_only > 0 && num_query_other == 0 && num_keywords == 0)
    6172            1 :         rl_completion_append_character = '\0';
    6173              : 
    6174              :     /* No more matches, so free the result structure and return null */
    6175           44 :     PQclear(result);
    6176           44 :     result = NULL;
    6177           44 :     return NULL;
    6178              : }
    6179              : 
    6180              : 
    6181              : /*
    6182              :  * Set up completion_ref_object and completion_ref_schema
    6183              :  * by parsing the given word.  These variables can then be
    6184              :  * used in a query passed to _complete_from_query.
    6185              :  */
    6186              : static void
    6187           19 : set_completion_reference(const char *word)
    6188              : {
    6189              :     bool        schemaquoted,
    6190              :                 objectquoted;
    6191              : 
    6192           19 :     parse_identifier(word,
    6193              :                      &completion_ref_schema, &completion_ref_object,
    6194              :                      &schemaquoted, &objectquoted);
    6195           19 : }
    6196              : 
    6197              : /*
    6198              :  * Set up completion_ref_object when it should just be
    6199              :  * the given word verbatim.
    6200              :  */
    6201              : static void
    6202            2 : set_completion_reference_verbatim(const char *word)
    6203              : {
    6204            2 :     completion_ref_schema = NULL;
    6205            2 :     completion_ref_object = pg_strdup(word);
    6206            2 : }
    6207              : 
    6208              : 
    6209              : /*
    6210              :  * This function returns in order one of a fixed, NULL pointer terminated list
    6211              :  * of strings (if matching). This can be used if there are only a fixed number
    6212              :  * SQL words that can appear at certain spot.
    6213              :  */
    6214              : static char *
    6215           32 : complete_from_list(const char *text, int state)
    6216              : {
    6217              :     static int  string_length,
    6218              :                 list_index,
    6219              :                 matches;
    6220              :     static bool casesensitive;
    6221              :     const char *item;
    6222              : 
    6223              :     /* need to have a list */
    6224              :     Assert(completion_charpp != NULL);
    6225              : 
    6226              :     /* Initialization */
    6227           32 :     if (state == 0)
    6228              :     {
    6229           13 :         list_index = 0;
    6230           13 :         string_length = strlen(text);
    6231           13 :         casesensitive = completion_case_sensitive;
    6232           13 :         matches = 0;
    6233              :     }
    6234              : 
    6235          544 :     while ((item = completion_charpp[list_index++]))
    6236              :     {
    6237              :         /* First pass is case sensitive */
    6238          498 :         if (casesensitive && strncmp(text, item, string_length) == 0)
    6239              :         {
    6240            4 :             matches++;
    6241            4 :             return pg_strdup(item);
    6242              :         }
    6243              : 
    6244              :         /* Second pass is case insensitive, don't bother counting matches */
    6245          494 :         if (!casesensitive && pg_strncasecmp(text, item, string_length) == 0)
    6246              :         {
    6247           14 :             if (completion_case_sensitive)
    6248            1 :                 return pg_strdup(item);
    6249              :             else
    6250              : 
    6251              :                 /*
    6252              :                  * If case insensitive matching was requested initially,
    6253              :                  * adjust the case according to setting.
    6254              :                  */
    6255           13 :                 return pg_strdup_keyword_case(item, text);
    6256              :         }
    6257              :     }
    6258              : 
    6259              :     /*
    6260              :      * No matches found. If we're not case insensitive already, lets switch to
    6261              :      * being case insensitive and try again
    6262              :      */
    6263           14 :     if (casesensitive && matches == 0)
    6264              :     {
    6265            1 :         casesensitive = false;
    6266            1 :         list_index = 0;
    6267            1 :         state++;
    6268            1 :         return complete_from_list(text, state);
    6269              :     }
    6270              : 
    6271              :     /* If no more matches, return null. */
    6272           13 :     return NULL;
    6273              : }
    6274              : 
    6275              : 
    6276              : /*
    6277              :  * This function returns one fixed string the first time even if it doesn't
    6278              :  * match what's there, and nothing the second time.  The string
    6279              :  * to be used must be in completion_charp.
    6280              :  *
    6281              :  * If the given string is "", this has the effect of preventing readline
    6282              :  * from doing any completion.  (Without this, readline tries to do filename
    6283              :  * completion which is seldom the right thing.)
    6284              :  *
    6285              :  * If the given string is not empty, readline will replace whatever the
    6286              :  * user typed with that string.  This behavior might be useful if it's
    6287              :  * completely certain that we know what must appear at a certain spot,
    6288              :  * so that it's okay to overwrite misspellings.  In practice, given the
    6289              :  * relatively lame parsing technology used in this file, the level of
    6290              :  * certainty is seldom that high, so that you probably don't want to
    6291              :  * use this.  Use complete_from_list with a one-element list instead;
    6292              :  * that won't try to auto-correct "misspellings".
    6293              :  */
    6294              : static char *
    6295            4 : complete_from_const(const char *text, int state)
    6296              : {
    6297              :     Assert(completion_charp != NULL);
    6298            4 :     if (state == 0)
    6299              :     {
    6300            2 :         if (completion_case_sensitive)
    6301            2 :             return pg_strdup(completion_charp);
    6302              :         else
    6303              : 
    6304              :             /*
    6305              :              * If case insensitive matching was requested initially, adjust
    6306              :              * the case according to setting.
    6307              :              */
    6308            0 :             return pg_strdup_keyword_case(completion_charp, text);
    6309              :     }
    6310              :     else
    6311            2 :         return NULL;
    6312              : }
    6313              : 
    6314              : 
    6315              : /*
    6316              :  * This function appends the variable name with prefix and suffix to
    6317              :  * the variable names array.
    6318              :  */
    6319              : static void
    6320          124 : append_variable_names(char ***varnames, int *nvars,
    6321              :                       int *maxvars, const char *varname,
    6322              :                       const char *prefix, const char *suffix)
    6323              : {
    6324          124 :     if (*nvars >= *maxvars)
    6325              :     {
    6326            0 :         *maxvars *= 2;
    6327            0 :         *varnames = pg_realloc_array(*varnames, char *, (*maxvars) + 1);
    6328              :     }
    6329              : 
    6330          124 :     (*varnames)[(*nvars)++] = psprintf("%s%s%s", prefix, varname, suffix);
    6331          124 : }
    6332              : 
    6333              : 
    6334              : /*
    6335              :  * This function supports completion with the name of a psql variable.
    6336              :  * The variable names can be prefixed and suffixed with additional text
    6337              :  * to support quoting usages. If need_value is true, only variables
    6338              :  * that are currently set are included; otherwise, special variables
    6339              :  * (those that have hooks) are included even if currently unset.
    6340              :  */
    6341              : static char **
    6342            3 : complete_from_variables(const char *text, const char *prefix, const char *suffix,
    6343              :                         bool need_value)
    6344              : {
    6345              :     char      **matches;
    6346              :     char      **varnames;
    6347            3 :     int         nvars = 0;
    6348            3 :     int         maxvars = 100;
    6349              :     int         i;
    6350              :     struct _variable *ptr;
    6351              : 
    6352            3 :     varnames = pg_malloc_array(char *, maxvars + 1);
    6353              : 
    6354          129 :     for (ptr = pset.vars->next; ptr; ptr = ptr->next)
    6355              :     {
    6356          126 :         if (need_value && !(ptr->value))
    6357            2 :             continue;
    6358          124 :         append_variable_names(&varnames, &nvars, &maxvars, ptr->name,
    6359              :                               prefix, suffix);
    6360              :     }
    6361              : 
    6362            3 :     varnames[nvars] = NULL;
    6363            3 :     COMPLETE_WITH_LIST_CS((const char *const *) varnames);
    6364              : 
    6365          127 :     for (i = 0; i < nvars; i++)
    6366          124 :         free(varnames[i]);
    6367            3 :     free(varnames);
    6368              : 
    6369            3 :     return matches;
    6370              : }
    6371              : 
    6372              : 
    6373              : /*
    6374              :  * This function returns in order one of a fixed, NULL pointer terminated list
    6375              :  * of string that matches file names or optionally specified list of keywords.
    6376              :  *
    6377              :  * If completion_charpp is set to a null-terminated array of literal keywords,
    6378              :  * those keywords are added to the completion results alongside filenames if
    6379              :  * they case-insensitively match the current input.
    6380              :  */
    6381              : static char *
    6382           16 : complete_from_files(const char *text, int state)
    6383              : {
    6384              :     static int  list_index;
    6385              :     static bool files_done;
    6386              :     const char *item;
    6387              : 
    6388              :     /* Initialization */
    6389           16 :     if (state == 0)
    6390              :     {
    6391            6 :         list_index = 0;
    6392            6 :         files_done = false;
    6393              :     }
    6394              : 
    6395           16 :     if (!files_done)
    6396              :     {
    6397           16 :         char       *result = _complete_from_files(text, state);
    6398              : 
    6399              :         /* Return a filename that matches */
    6400           16 :         if (result)
    6401           10 :             return result;
    6402              : 
    6403              :         /* There are no more matching files */
    6404            6 :         files_done = true;
    6405              :     }
    6406              : 
    6407            6 :     if (!completion_charpp)
    6408            2 :         return NULL;
    6409              : 
    6410              :     /*
    6411              :      * Check for hard-wired keywords. These will only be returned if they
    6412              :      * match the input-so-far, ignoring case.
    6413              :      */
    6414           12 :     while ((item = completion_charpp[list_index++]))
    6415              :     {
    6416            8 :         if (pg_strncasecmp(text, item, strlen(text)) == 0)
    6417              :         {
    6418            0 :             completion_force_quote = false;
    6419            0 :             return pg_strdup_keyword_case(item, text);
    6420              :         }
    6421              :     }
    6422              : 
    6423            4 :     return NULL;
    6424              : }
    6425              : 
    6426              : /*
    6427              :  * This function wraps rl_filename_completion_function() to strip quotes from
    6428              :  * the input before searching for matches and to quote any matches for which
    6429              :  * the consuming command will require it.
    6430              :  *
    6431              :  * Caller must set completion_charp to a zero- or one-character string
    6432              :  * containing the escape character.  This is necessary since \copy has no
    6433              :  * escape character, but every other backslash command recognizes "\" as an
    6434              :  * escape character.
    6435              :  *
    6436              :  * Caller must also set completion_force_quote to indicate whether to force
    6437              :  * quotes around the result.  (The SQL COPY command requires that.)
    6438              :  */
    6439              : static char *
    6440           16 : _complete_from_files(const char *text, int state)
    6441              : {
    6442              : #ifdef USE_FILENAME_QUOTING_FUNCTIONS
    6443              : 
    6444              :     /*
    6445              :      * If we're using a version of Readline that supports filename quoting
    6446              :      * hooks, rely on those, and invoke rl_filename_completion_function()
    6447              :      * without messing with its arguments.  Readline does stuff internally
    6448              :      * that does not work well at all if we try to handle dequoting here.
    6449              :      * Instead, Readline will call quote_file_name() and dequote_file_name()
    6450              :      * (see below) at appropriate times.
    6451              :      *
    6452              :      * ... or at least, mostly it will.  There are some paths involving
    6453              :      * unmatched file names in which Readline never calls quote_file_name(),
    6454              :      * and if left to its own devices it will incorrectly append a quote
    6455              :      * anyway.  Set rl_completion_suppress_quote to prevent that.  If we do
    6456              :      * get to quote_file_name(), we'll clear this again.  (Yes, this seems
    6457              :      * like it's working around Readline bugs.)
    6458              :      */
    6459              : #ifdef HAVE_RL_COMPLETION_SUPPRESS_QUOTE
    6460           16 :     rl_completion_suppress_quote = 1;
    6461              : #endif
    6462              : 
    6463              :     /* If user typed a quote, force quoting (never remove user's quote) */
    6464           16 :     if (*text == '\'')
    6465            0 :         completion_force_quote = true;
    6466              : 
    6467           16 :     return rl_filename_completion_function(text, state);
    6468              : #else
    6469              : 
    6470              :     /*
    6471              :      * Otherwise, we have to do the best we can.
    6472              :      */
    6473              :     static const char *unquoted_text;
    6474              :     char       *unquoted_match;
    6475              :     char       *ret = NULL;
    6476              : 
    6477              :     /* If user typed a quote, force quoting (never remove user's quote) */
    6478              :     if (*text == '\'')
    6479              :         completion_force_quote = true;
    6480              : 
    6481              :     if (state == 0)
    6482              :     {
    6483              :         /* Initialization: stash the unquoted input. */
    6484              :         unquoted_text = strtokx(text, "", NULL, "'", *completion_charp,
    6485              :                                 false, true, pset.encoding);
    6486              :         /* expect a NULL return for the empty string only */
    6487              :         if (!unquoted_text)
    6488              :         {
    6489              :             Assert(*text == '\0');
    6490              :             unquoted_text = text;
    6491              :         }
    6492              :     }
    6493              : 
    6494              :     unquoted_match = rl_filename_completion_function(unquoted_text, state);
    6495              :     if (unquoted_match)
    6496              :     {
    6497              :         struct stat statbuf;
    6498              :         bool        is_dir = (stat(unquoted_match, &statbuf) == 0 &&
    6499              :                               S_ISDIR(statbuf.st_mode) != 0);
    6500              : 
    6501              :         /* Re-quote the result, if needed. */
    6502              :         ret = quote_if_needed(unquoted_match, " \t\r\n\"`",
    6503              :                               '\'', *completion_charp,
    6504              :                               completion_force_quote,
    6505              :                               pset.encoding);
    6506              :         if (ret)
    6507              :             free(unquoted_match);
    6508              :         else
    6509              :             ret = unquoted_match;
    6510              : 
    6511              :         /*
    6512              :          * If it's a directory, replace trailing quote with a slash; this is
    6513              :          * usually more convenient.  (If we didn't quote, leave this to
    6514              :          * libedit.)
    6515              :          */
    6516              :         if (*ret == '\'' && is_dir)
    6517              :         {
    6518              :             char       *retend = ret + strlen(ret) - 1;
    6519              : 
    6520              :             Assert(*retend == '\'');
    6521              :             *retend = '/';
    6522              :             /* Prevent libedit from adding a space, too */
    6523              :             rl_completion_append_character = '\0';
    6524              :         }
    6525              :     }
    6526              : 
    6527              :     return ret;
    6528              : #endif                          /* USE_FILENAME_QUOTING_FUNCTIONS */
    6529              : }
    6530              : 
    6531              : 
    6532              : /* HELPER FUNCTIONS */
    6533              : 
    6534              : 
    6535              : /*
    6536              :  * Make a pg_strdup copy of s and convert the case according to
    6537              :  * COMP_KEYWORD_CASE setting, using ref as the text that was already entered.
    6538              :  */
    6539              : static char *
    6540           40 : pg_strdup_keyword_case(const char *s, const char *ref)
    6541              : {
    6542              :     char       *ret,
    6543              :                *p;
    6544           40 :     unsigned char first = ref[0];
    6545              : 
    6546           40 :     ret = pg_strdup(s);
    6547              : 
    6548           40 :     if (pset.comp_case == PSQL_COMP_CASE_LOWER ||
    6549           34 :         ((pset.comp_case == PSQL_COMP_CASE_PRESERVE_LOWER ||
    6550           34 :           pset.comp_case == PSQL_COMP_CASE_PRESERVE_UPPER) && islower(first)) ||
    6551           26 :         (pset.comp_case == PSQL_COMP_CASE_PRESERVE_LOWER && !isalpha(first)))
    6552              :     {
    6553          122 :         for (p = ret; *p; p++)
    6554          108 :             *p = pg_tolower((unsigned char) *p);
    6555              :     }
    6556              :     else
    6557              :     {
    6558          241 :         for (p = ret; *p; p++)
    6559          215 :             *p = pg_toupper((unsigned char) *p);
    6560              :     }
    6561              : 
    6562           40 :     return ret;
    6563              : }
    6564              : 
    6565              : 
    6566              : /*
    6567              :  * escape_string - Escape argument for use as string literal.
    6568              :  *
    6569              :  * The returned value has to be freed.
    6570              :  */
    6571              : static char *
    6572           71 : escape_string(const char *text)
    6573              : {
    6574              :     size_t      text_length;
    6575              :     char       *result;
    6576              : 
    6577           71 :     text_length = strlen(text);
    6578              : 
    6579           71 :     result = pg_malloc(text_length * 2 + 1);
    6580           71 :     PQescapeStringConn(pset.db, result, text, text_length, NULL);
    6581              : 
    6582           71 :     return result;
    6583              : }
    6584              : 
    6585              : 
    6586              : /*
    6587              :  * make_like_pattern - Convert argument to a LIKE prefix pattern.
    6588              :  *
    6589              :  * We escape _ and % in the given text by backslashing, append a % to
    6590              :  * represent "any subsequent characters", and then pass the string through
    6591              :  * escape_string() so it's ready to insert in a query.  The result needs
    6592              :  * to be freed.
    6593              :  */
    6594              : static char *
    6595           44 : make_like_pattern(const char *word)
    6596              : {
    6597              :     char       *result;
    6598           44 :     char       *buffer = pg_malloc(strlen(word) * 2 + 2);
    6599           44 :     char       *bptr = buffer;
    6600              : 
    6601          183 :     while (*word)
    6602              :     {
    6603          139 :         if (*word == '_' || *word == '%')
    6604            2 :             *bptr++ = '\\';
    6605          139 :         if (IS_HIGHBIT_SET(*word))
    6606              :         {
    6607              :             /*
    6608              :              * Transfer multibyte characters without further processing, to
    6609              :              * avoid getting confused in unsafe client encodings.
    6610              :              */
    6611            0 :             int         chlen = PQmblenBounded(word, pset.encoding);
    6612              : 
    6613            0 :             while (chlen-- > 0)
    6614            0 :                 *bptr++ = *word++;
    6615              :         }
    6616              :         else
    6617          139 :             *bptr++ = *word++;
    6618              :     }
    6619           44 :     *bptr++ = '%';
    6620           44 :     *bptr = '\0';
    6621              : 
    6622           44 :     result = escape_string(buffer);
    6623           44 :     free(buffer);
    6624           44 :     return result;
    6625              : }
    6626              : 
    6627              : 
    6628              : /*
    6629              :  * parse_identifier - Parse a possibly-schema-qualified SQL identifier.
    6630              :  *
    6631              :  * This involves splitting off the schema name if present, de-quoting,
    6632              :  * and downcasing any unquoted text.  We are a bit laxer than the backend
    6633              :  * in that we allow just portions of a name to be quoted --- that's because
    6634              :  * psql metacommands have traditionally behaved that way.
    6635              :  *
    6636              :  * Outputs are a malloc'd schema name (NULL if none), malloc'd object name,
    6637              :  * and booleans telling whether any part of the schema and object name was
    6638              :  * double-quoted.
    6639              :  */
    6640              : static void
    6641           55 : parse_identifier(const char *ident,
    6642              :                  char **schemaname, char **objectname,
    6643              :                  bool *schemaquoted, bool *objectquoted)
    6644              : {
    6645           55 :     size_t      buflen = strlen(ident) + 1;
    6646           55 :     bool        enc_is_single_byte = (pg_encoding_max_length(pset.encoding) == 1);
    6647              :     char       *sname;
    6648              :     char       *oname;
    6649              :     char       *optr;
    6650              :     bool        inquotes;
    6651              : 
    6652              :     /* Initialize, making a certainly-large-enough output buffer */
    6653           55 :     sname = NULL;
    6654           55 :     oname = pg_malloc(buflen);
    6655           55 :     *schemaquoted = *objectquoted = false;
    6656              :     /* Scan */
    6657           55 :     optr = oname;
    6658           55 :     inquotes = false;
    6659          271 :     while (*ident)
    6660              :     {
    6661          216 :         unsigned char ch = (unsigned char) *ident++;
    6662              : 
    6663          216 :         if (ch == '"')
    6664              :         {
    6665            7 :             if (inquotes && *ident == '"')
    6666              :             {
    6667              :                 /* two quote marks within a quoted identifier = emit quote */
    6668            0 :                 *optr++ = '"';
    6669            0 :                 ident++;
    6670              :             }
    6671              :             else
    6672              :             {
    6673            7 :                 inquotes = !inquotes;
    6674            7 :                 *objectquoted = true;
    6675              :             }
    6676              :         }
    6677          209 :         else if (ch == '.' && !inquotes)
    6678              :         {
    6679              :             /* Found a schema name, transfer it to sname / *schemaquoted */
    6680            4 :             *optr = '\0';
    6681            4 :             free(sname);        /* drop any catalog name */
    6682            4 :             sname = oname;
    6683            4 :             oname = pg_malloc(buflen);
    6684            4 :             optr = oname;
    6685            4 :             *schemaquoted = *objectquoted;
    6686            4 :             *objectquoted = false;
    6687              :         }
    6688          205 :         else if (!enc_is_single_byte && IS_HIGHBIT_SET(ch))
    6689            0 :         {
    6690              :             /*
    6691              :              * Transfer multibyte characters without further processing.  They
    6692              :              * wouldn't be affected by our downcasing rule anyway, and this
    6693              :              * avoids possibly doing the wrong thing in unsafe client
    6694              :              * encodings.
    6695              :              */
    6696            0 :             int         chlen = PQmblenBounded(ident - 1, pset.encoding);
    6697              : 
    6698            0 :             *optr++ = (char) ch;
    6699            0 :             while (--chlen > 0)
    6700            0 :                 *optr++ = *ident++;
    6701              :         }
    6702              :         else
    6703              :         {
    6704          205 :             if (!inquotes)
    6705              :             {
    6706              :                 /*
    6707              :                  * This downcasing transformation should match the backend's
    6708              :                  * downcase_identifier() as best we can.  We do not know the
    6709              :                  * backend's locale, though, so it's necessarily approximate.
    6710              :                  * We assume that psql is operating in the same locale and
    6711              :                  * encoding as the backend.
    6712              :                  */
    6713          181 :                 if (ch >= 'A' && ch <= 'Z')
    6714           28 :                     ch += 'a' - 'A';
    6715          153 :                 else if (enc_is_single_byte && IS_HIGHBIT_SET(ch) && isupper(ch))
    6716            0 :                     ch = tolower(ch);
    6717              :             }
    6718          205 :             *optr++ = (char) ch;
    6719              :         }
    6720              :     }
    6721              : 
    6722           55 :     *optr = '\0';
    6723           55 :     *schemaname = sname;
    6724           55 :     *objectname = oname;
    6725           55 : }
    6726              : 
    6727              : 
    6728              : /*
    6729              :  * requote_identifier - Reconstruct a possibly-schema-qualified SQL identifier.
    6730              :  *
    6731              :  * Build a malloc'd string containing the identifier, with quoting applied
    6732              :  * as necessary.  This is more or less the inverse of parse_identifier;
    6733              :  * in particular, if an input component was quoted, we'll quote the output
    6734              :  * even when that isn't strictly required.
    6735              :  *
    6736              :  * Unlike parse_identifier, we handle the case where a schema and no
    6737              :  * object name is provided, producing just "schema.".
    6738              :  */
    6739              : static char *
    6740           31 : requote_identifier(const char *schemaname, const char *objectname,
    6741              :                    bool quote_schema, bool quote_object)
    6742              : {
    6743              :     char       *result;
    6744           31 :     size_t      buflen = 1;     /* count the trailing \0 */
    6745              :     char       *ptr;
    6746              : 
    6747              :     /*
    6748              :      * We could use PQescapeIdentifier for some of this, but not all, and it
    6749              :      * adds more notational cruft than it seems worth.
    6750              :      */
    6751           31 :     if (schemaname)
    6752              :     {
    6753            4 :         buflen += strlen(schemaname) + 1;   /* +1 for the dot */
    6754            4 :         if (!quote_schema)
    6755            4 :             quote_schema = identifier_needs_quotes(schemaname);
    6756            4 :         if (quote_schema)
    6757              :         {
    6758            0 :             buflen += 2;        /* account for quote marks */
    6759            0 :             for (const char *p = schemaname; *p; p++)
    6760              :             {
    6761            0 :                 if (*p == '"')
    6762            0 :                     buflen++;
    6763              :             }
    6764              :         }
    6765              :     }
    6766           31 :     if (objectname)
    6767              :     {
    6768           30 :         buflen += strlen(objectname);
    6769           30 :         if (!quote_object)
    6770           22 :             quote_object = identifier_needs_quotes(objectname);
    6771           30 :         if (quote_object)
    6772              :         {
    6773            8 :             buflen += 2;        /* account for quote marks */
    6774           73 :             for (const char *p = objectname; *p; p++)
    6775              :             {
    6776           65 :                 if (*p == '"')
    6777            0 :                     buflen++;
    6778              :             }
    6779              :         }
    6780              :     }
    6781           31 :     result = pg_malloc(buflen);
    6782           31 :     ptr = result;
    6783           31 :     if (schemaname)
    6784              :     {
    6785            4 :         if (quote_schema)
    6786            0 :             *ptr++ = '"';
    6787           28 :         for (const char *p = schemaname; *p; p++)
    6788              :         {
    6789           24 :             *ptr++ = *p;
    6790           24 :             if (*p == '"')
    6791            0 :                 *ptr++ = '"';
    6792              :         }
    6793            4 :         if (quote_schema)
    6794            0 :             *ptr++ = '"';
    6795            4 :         *ptr++ = '.';
    6796              :     }
    6797           31 :     if (objectname)
    6798              :     {
    6799           30 :         if (quote_object)
    6800            8 :             *ptr++ = '"';
    6801          264 :         for (const char *p = objectname; *p; p++)
    6802              :         {
    6803          234 :             *ptr++ = *p;
    6804          234 :             if (*p == '"')
    6805            0 :                 *ptr++ = '"';
    6806              :         }
    6807           30 :         if (quote_object)
    6808            8 :             *ptr++ = '"';
    6809              :     }
    6810           31 :     *ptr = '\0';
    6811           31 :     return result;
    6812              : }
    6813              : 
    6814              : 
    6815              : /*
    6816              :  * Detect whether an identifier must be double-quoted.
    6817              :  *
    6818              :  * Note we'll quote anything that's not ASCII; the backend's quote_ident()
    6819              :  * does the same.  Perhaps this could be relaxed in future.
    6820              :  */
    6821              : static bool
    6822           49 : identifier_needs_quotes(const char *ident)
    6823              : {
    6824              :     int         kwnum;
    6825              : 
    6826              :     /* Check syntax. */
    6827           49 :     if (!((ident[0] >= 'a' && ident[0] <= 'z') || ident[0] == '_'))
    6828            0 :         return true;
    6829           49 :     if (strspn(ident, "abcdefghijklmnopqrstuvwxyz0123456789_$") != strlen(ident))
    6830            0 :         return true;
    6831              : 
    6832              :     /*
    6833              :      * Check for keyword.  We quote keywords except for unreserved ones.
    6834              :      *
    6835              :      * It is possible that our keyword list doesn't quite agree with the
    6836              :      * server's, but this should be close enough for tab-completion purposes.
    6837              :      *
    6838              :      * Note: ScanKeywordLookup() does case-insensitive comparison, but that's
    6839              :      * fine, since we already know we have all-lower-case.
    6840              :      */
    6841           49 :     kwnum = ScanKeywordLookup(ident, &ScanKeywords);
    6842              : 
    6843           49 :     if (kwnum >= 0 && ScanKeywordCategories[kwnum] != UNRESERVED_KEYWORD)
    6844            0 :         return true;
    6845              : 
    6846           49 :     return false;
    6847              : }
    6848              : 
    6849              : 
    6850              : /*
    6851              :  * Execute a query, returning NULL if there was any error.
    6852              :  * This should be the preferred way of talking to the database in this file.
    6853              :  */
    6854              : static PGresult *
    6855           46 : exec_query(const char *query)
    6856              : {
    6857              :     PGresult   *result;
    6858              : 
    6859           46 :     if (query == NULL || !pset.db || PQstatus(pset.db) != CONNECTION_OK)
    6860            0 :         return NULL;
    6861              : 
    6862           46 :     result = PQexec(pset.db, query);
    6863              : 
    6864           46 :     if (PQresultStatus(result) != PGRES_TUPLES_OK)
    6865              :     {
    6866              :         /*
    6867              :          * Printing an error while the user is typing would be quite annoying,
    6868              :          * so we don't.  This does complicate debugging of this code; but you
    6869              :          * can look in the server log instead.
    6870              :          */
    6871              : #ifdef NOT_USED
    6872              :         pg_log_error("tab completion query failed: %s\nQuery was:\n%s",
    6873              :                      PQerrorMessage(pset.db), query);
    6874              : #endif
    6875            0 :         PQclear(result);
    6876            0 :         result = NULL;
    6877              :     }
    6878              : 
    6879           46 :     return result;
    6880              : }
    6881              : 
    6882              : 
    6883              : /*
    6884              :  * Parse all the word(s) before point.
    6885              :  *
    6886              :  * Returns a malloc'd array of character pointers that point into the malloc'd
    6887              :  * data array returned to *buffer; caller must free() both of these when done.
    6888              :  * *nwords receives the number of words found, ie, the valid length of the
    6889              :  * return array.
    6890              :  *
    6891              :  * Words are returned right to left, that is, previous_words[0] gets the last
    6892              :  * word before point, previous_words[1] the next-to-last, etc.
    6893              :  */
    6894              : static char **
    6895           67 : get_previous_words(int point, char **buffer, int *nwords)
    6896              : {
    6897              :     char      **previous_words;
    6898              :     char       *buf;
    6899              :     char       *outptr;
    6900           67 :     int         words_found = 0;
    6901              :     int         i;
    6902              : 
    6903              :     /*
    6904              :      * If we have anything in tab_completion_query_buf, paste it together with
    6905              :      * rl_line_buffer to construct the full query.  Otherwise we can just use
    6906              :      * rl_line_buffer as the input string.
    6907              :      */
    6908           67 :     if (tab_completion_query_buf && tab_completion_query_buf->len > 0)
    6909              :     {
    6910            3 :         i = tab_completion_query_buf->len;
    6911            3 :         buf = pg_malloc(point + i + 2);
    6912            3 :         memcpy(buf, tab_completion_query_buf->data, i);
    6913            3 :         buf[i++] = '\n';
    6914            3 :         memcpy(buf + i, rl_line_buffer, point);
    6915            3 :         i += point;
    6916            3 :         buf[i] = '\0';
    6917              :         /* Readjust point to reference appropriate offset in buf */
    6918            3 :         point = i;
    6919              :     }
    6920              :     else
    6921           64 :         buf = rl_line_buffer;
    6922              : 
    6923              :     /*
    6924              :      * Allocate an array of string pointers and a buffer to hold the strings
    6925              :      * themselves.  The worst case is that the line contains only
    6926              :      * non-whitespace WORD_BREAKS characters, making each one a separate word.
    6927              :      * This is usually much more space than we need, but it's cheaper than
    6928              :      * doing a separate malloc() for each word.
    6929              :      */
    6930           67 :     previous_words = pg_malloc_array(char *, point);
    6931           67 :     *buffer = outptr = (char *) pg_malloc(point * 2);
    6932              : 
    6933              :     /*
    6934              :      * First we look for a non-word char before the current point.  (This is
    6935              :      * probably useless, if readline is on the same page as we are about what
    6936              :      * is a word, but if so it's cheap.)
    6937              :      */
    6938           73 :     for (i = point - 1; i >= 0; i--)
    6939              :     {
    6940           70 :         if (strchr(WORD_BREAKS, buf[i]))
    6941           64 :             break;
    6942              :     }
    6943           67 :     point = i;
    6944              : 
    6945              :     /*
    6946              :      * Now parse words, working backwards, until we hit start of line.  The
    6947              :      * backwards scan has some interesting but intentional properties
    6948              :      * concerning parenthesis handling.
    6949              :      */
    6950          255 :     while (point >= 0)
    6951              :     {
    6952              :         int         start,
    6953              :                     end;
    6954          188 :         bool        inquotes = false;
    6955          188 :         int         parentheses = 0;
    6956              : 
    6957              :         /* now find the first non-space which then constitutes the end */
    6958          188 :         end = -1;
    6959          382 :         for (i = point; i >= 0; i--)
    6960              :         {
    6961          382 :             if (!isspace((unsigned char) buf[i]))
    6962              :             {
    6963          188 :                 end = i;
    6964          188 :                 break;
    6965              :             }
    6966              :         }
    6967              :         /* if no end found, we're done */
    6968          188 :         if (end < 0)
    6969            0 :             break;
    6970              : 
    6971              :         /*
    6972              :          * Otherwise we now look for the start.  The start is either the last
    6973              :          * character before any word-break character going backwards from the
    6974              :          * end, or it's simply character 0.  We also handle open quotes and
    6975              :          * parentheses.
    6976              :          */
    6977          943 :         for (start = end; start > 0; start--)
    6978              :         {
    6979          879 :             if (buf[start] == '"')
    6980            2 :                 inquotes = !inquotes;
    6981          879 :             if (!inquotes)
    6982              :             {
    6983          874 :                 if (buf[start] == ')')
    6984            0 :                     parentheses++;
    6985          874 :                 else if (buf[start] == '(')
    6986              :                 {
    6987            3 :                     if (--parentheses <= 0)
    6988            3 :                         break;
    6989              :                 }
    6990          871 :                 else if (parentheses == 0 &&
    6991          871 :                          strchr(WORD_BREAKS, buf[start - 1]))
    6992          121 :                     break;
    6993              :             }
    6994              :         }
    6995              : 
    6996              :         /* Return the word located at start to end inclusive */
    6997          188 :         previous_words[words_found++] = outptr;
    6998          188 :         i = end - start + 1;
    6999          188 :         memcpy(outptr, &buf[start], i);
    7000          188 :         outptr += i;
    7001          188 :         *outptr++ = '\0';
    7002              : 
    7003              :         /* Continue searching */
    7004          188 :         point = start - 1;
    7005              :     }
    7006              : 
    7007              :     /* Release parsing input workspace, if we made one above */
    7008           67 :     if (buf != rl_line_buffer)
    7009            3 :         free(buf);
    7010              : 
    7011           67 :     *nwords = words_found;
    7012           67 :     return previous_words;
    7013              : }
    7014              : 
    7015              : /*
    7016              :  * Look up the type for the GUC variable with the passed name.
    7017              :  *
    7018              :  * Returns NULL if the variable is unknown. Otherwise the returned string,
    7019              :  * containing the type, has to be freed.
    7020              :  */
    7021              : static char *
    7022            2 : get_guctype(const char *varname)
    7023              : {
    7024              :     PQExpBufferData query_buffer;
    7025              :     char       *e_varname;
    7026              :     PGresult   *result;
    7027            2 :     char       *guctype = NULL;
    7028              : 
    7029            2 :     e_varname = escape_string(varname);
    7030              : 
    7031            2 :     initPQExpBuffer(&query_buffer);
    7032            2 :     appendPQExpBuffer(&query_buffer,
    7033              :                       "SELECT vartype FROM pg_catalog.pg_settings "
    7034              :                       "WHERE pg_catalog.lower(name) = pg_catalog.lower('%s')",
    7035              :                       e_varname);
    7036              : 
    7037            2 :     result = exec_query(query_buffer.data);
    7038            2 :     termPQExpBuffer(&query_buffer);
    7039            2 :     free(e_varname);
    7040              : 
    7041            2 :     if (PQresultStatus(result) == PGRES_TUPLES_OK && PQntuples(result) > 0)
    7042            2 :         guctype = pg_strdup(PQgetvalue(result, 0, 0));
    7043              : 
    7044            2 :     PQclear(result);
    7045              : 
    7046            2 :     return guctype;
    7047              : }
    7048              : 
    7049              : #ifdef USE_FILENAME_QUOTING_FUNCTIONS
    7050              : 
    7051              : /*
    7052              :  * Quote a filename according to SQL rules, returning a malloc'd string.
    7053              :  * completion_charp must point to escape character or '\0', and
    7054              :  * completion_force_quote must be set correctly, as per comments for
    7055              :  * complete_from_files().
    7056              :  */
    7057              : static char *
    7058            5 : quote_file_name(char *fname, int match_type, char *quote_pointer)
    7059              : {
    7060              :     char       *s;
    7061              :     struct stat statbuf;
    7062              : 
    7063              :     /* Quote if needed. */
    7064            5 :     s = quote_if_needed(fname, " \t\r\n\"`",
    7065            5 :                         '\'', *completion_charp,
    7066              :                         completion_force_quote,
    7067              :                         pset.encoding);
    7068            5 :     if (!s)
    7069            2 :         s = pg_strdup(fname);
    7070              : 
    7071              :     /*
    7072              :      * However, some of the time we have to strip the trailing quote from what
    7073              :      * we send back.  Never strip the trailing quote if the user already typed
    7074              :      * one; otherwise, suppress the trailing quote if we have multiple/no
    7075              :      * matches (because we don't want to add a quote if the input is seemingly
    7076              :      * unfinished), or if the input was already quoted (because Readline will
    7077              :      * do arguably-buggy things otherwise), or if the file does not exist, or
    7078              :      * if it's a directory.
    7079              :      */
    7080            5 :     if (*s == '\'' &&
    7081            3 :         completion_last_char != '\'' &&
    7082            1 :         (match_type != SINGLE_MATCH ||
    7083            2 :          (quote_pointer && *quote_pointer == '\'') ||
    7084            1 :          stat(fname, &statbuf) != 0 ||
    7085            1 :          S_ISDIR(statbuf.st_mode)))
    7086              :     {
    7087            2 :         char       *send = s + strlen(s) - 1;
    7088              : 
    7089              :         Assert(*send == '\'');
    7090            2 :         *send = '\0';
    7091              :     }
    7092              : 
    7093              :     /*
    7094              :      * And now we can let Readline do its thing with possibly adding a quote
    7095              :      * on its own accord.  (This covers some additional cases beyond those
    7096              :      * dealt with above.)
    7097              :      */
    7098              : #ifdef HAVE_RL_COMPLETION_SUPPRESS_QUOTE
    7099            5 :     rl_completion_suppress_quote = 0;
    7100              : #endif
    7101              : 
    7102              :     /*
    7103              :      * If user typed a leading quote character other than single quote (i.e.,
    7104              :      * double quote), zap it, so that we replace it with the correct single
    7105              :      * quote.
    7106              :      */
    7107            5 :     if (quote_pointer && *quote_pointer != '\'')
    7108            4 :         *quote_pointer = '\0';
    7109              : 
    7110            5 :     return s;
    7111              : }
    7112              : 
    7113              : /*
    7114              :  * Dequote a filename, if it's quoted.
    7115              :  * completion_charp must point to escape character or '\0', as per
    7116              :  * comments for complete_from_files().
    7117              :  */
    7118              : static char *
    7119           12 : dequote_file_name(char *fname, int quote_char)
    7120              : {
    7121              :     char       *unquoted_fname;
    7122              : 
    7123              :     /*
    7124              :      * If quote_char is set, it's not included in "fname".  We have to add it
    7125              :      * or strtokx will not interpret the string correctly (notably, it won't
    7126              :      * recognize escapes).
    7127              :      */
    7128           12 :     if (quote_char == '\'')
    7129              :     {
    7130            6 :         char       *workspace = (char *) pg_malloc(strlen(fname) + 2);
    7131              : 
    7132            6 :         workspace[0] = quote_char;
    7133            6 :         strcpy(workspace + 1, fname);
    7134            6 :         unquoted_fname = strtokx(workspace, "", NULL, "'", *completion_charp,
    7135              :                                  false, true, pset.encoding);
    7136            6 :         free(workspace);
    7137              :     }
    7138              :     else
    7139            6 :         unquoted_fname = strtokx(fname, "", NULL, "'", *completion_charp,
    7140              :                                  false, true, pset.encoding);
    7141              : 
    7142              :     /* expect a NULL return for the empty string only */
    7143           12 :     if (!unquoted_fname)
    7144              :     {
    7145              :         Assert(*fname == '\0');
    7146            0 :         unquoted_fname = fname;
    7147              :     }
    7148              : 
    7149              :     /* readline expects a malloc'd result that it is to free */
    7150           12 :     return pg_strdup(unquoted_fname);
    7151              : }
    7152              : 
    7153              : #endif                          /* USE_FILENAME_QUOTING_FUNCTIONS */
    7154              : 
    7155              : #endif                          /* USE_READLINE */
        

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