LCOV - code coverage report
Current view: top level - src/bin/psql - tab-complete.c (source / functions) Hit Total Coverage
Test: PostgreSQL 13beta1 Lines: 849 1686 50.4 %
Date: 2020-05-29 01:06:25 Functions: 16 28 57.1 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /*
       2             :  * psql - the PostgreSQL interactive terminal
       3             :  *
       4             :  * Copyright (c) 2000-2020, PostgreSQL Global Development Group
       5             :  *
       6             :  * src/bin/psql/tab-complete.c
       7             :  */
       8             : 
       9             : /*----------------------------------------------------------------------
      10             :  * This file implements a somewhat more sophisticated readline "TAB
      11             :  * completion" in psql. It is not intended to be AI, to replace
      12             :  * learning SQL, or to relieve you from thinking about what you're
      13             :  * doing. Also it does not always give you all the syntactically legal
      14             :  * completions, only those that are the most common or the ones that
      15             :  * the programmer felt most like implementing.
      16             :  *
      17             :  * CAVEAT: Tab completion causes queries to be sent to the backend.
      18             :  * The number of tuples returned gets limited, in most default
      19             :  * installations to 1000, but if you still don't like this prospect,
      20             :  * you can turn off tab completion in your ~/.inputrc (or else
      21             :  * ${INPUTRC}) file so:
      22             :  *
      23             :  *   $if psql
      24             :  *   set disable-completion on
      25             :  *   $endif
      26             :  *
      27             :  * See `man 3 readline' or `info readline' for the full details.
      28             :  *
      29             :  * BUGS:
      30             :  * - Quotes, parentheses, and other funny characters are not handled
      31             :  *   all that gracefully.
      32             :  *----------------------------------------------------------------------
      33             :  */
      34             : 
      35             : #include "postgres_fe.h"
      36             : 
      37             : #include "input.h"
      38             : #include "tab-complete.h"
      39             : 
      40             : /* If we don't have this, we might as well forget about the whole thing: */
      41             : #ifdef USE_READLINE
      42             : 
      43             : #include <ctype.h>
      44             : #include <sys/stat.h>
      45             : 
      46             : #include "catalog/pg_am_d.h"
      47             : #include "catalog/pg_class_d.h"
      48             : #include "common.h"
      49             : #include "libpq-fe.h"
      50             : #include "pqexpbuffer.h"
      51             : #include "settings.h"
      52             : #include "stringutils.h"
      53             : 
      54             : /*
      55             :  * Ancient versions of libedit provide filename_completion_function()
      56             :  * instead of rl_filename_completion_function().  Likewise for
      57             :  * [rl_]completion_matches().
      58             :  */
      59             : #ifndef HAVE_RL_FILENAME_COMPLETION_FUNCTION
      60             : #define rl_filename_completion_function filename_completion_function
      61             : #endif
      62             : 
      63             : #ifndef HAVE_RL_COMPLETION_MATCHES
      64             : #define rl_completion_matches completion_matches
      65             : #endif
      66             : 
      67             : /*
      68             :  * Currently we assume that rl_filename_dequoting_function exists if
      69             :  * rl_filename_quoting_function does.  If that proves not to be the case,
      70             :  * we'd need to test for the former, or possibly both, in configure.
      71             :  */
      72             : #ifdef HAVE_RL_FILENAME_QUOTING_FUNCTION
      73             : #define USE_FILENAME_QUOTING_FUNCTIONS 1
      74             : #endif
      75             : 
      76             : /* word break characters */
      77             : #define WORD_BREAKS     "\t\n@$><=;|&{() "
      78             : 
      79             : /*
      80             :  * Since readline doesn't let us pass any state through to the tab completion
      81             :  * callback, we have to use this global variable to let get_previous_words()
      82             :  * get at the previous lines of the current command.  Ick.
      83             :  */
      84             : PQExpBuffer tab_completion_query_buf = NULL;
      85             : 
      86             : /*
      87             :  * In some situations, the query to find out what names are available to
      88             :  * complete with must vary depending on server version.  We handle this by
      89             :  * storing a list of queries, each tagged with the minimum server version
      90             :  * it will work for.  Each list must be stored in descending server version
      91             :  * order, so that the first satisfactory query is the one to use.
      92             :  *
      93             :  * When the query string is otherwise constant, an array of VersionedQuery
      94             :  * suffices.  Terminate the array with an entry having min_server_version = 0.
      95             :  * That entry's query string can be a query that works in all supported older
      96             :  * server versions, or NULL to give up and do no completion.
      97             :  */
      98             : typedef struct VersionedQuery
      99             : {
     100             :     int         min_server_version;
     101             :     const char *query;
     102             : } VersionedQuery;
     103             : 
     104             : /*
     105             :  * This struct is used to define "schema queries", which are custom-built
     106             :  * to obtain possibly-schema-qualified names of database objects.  There is
     107             :  * enough similarity in the structure that we don't want to repeat it each
     108             :  * time.  So we put the components of each query into this struct and
     109             :  * assemble them with the common boilerplate in _complete_from_query().
     110             :  *
     111             :  * As with VersionedQuery, we can use an array of these if the query details
     112             :  * must vary across versions.
     113             :  */
     114             : typedef struct SchemaQuery
     115             : {
     116             :     /*
     117             :      * If not zero, minimum server version this struct applies to.  If not
     118             :      * zero, there should be a following struct with a smaller minimum server
     119             :      * version; use catname == NULL in the last entry if we should do nothing.
     120             :      */
     121             :     int         min_server_version;
     122             : 
     123             :     /*
     124             :      * Name of catalog or catalogs to be queried, with alias, eg.
     125             :      * "pg_catalog.pg_class c".  Note that "pg_namespace n" will be added.
     126             :      */
     127             :     const char *catname;
     128             : 
     129             :     /*
     130             :      * Selection condition --- only rows meeting this condition are candidates
     131             :      * to display.  If catname mentions multiple tables, include the necessary
     132             :      * join condition here.  For example, this might look like "c.relkind = "
     133             :      * CppAsString2(RELKIND_RELATION).  Write NULL (not an empty string) if
     134             :      * not needed.
     135             :      */
     136             :     const char *selcondition;
     137             : 
     138             :     /*
     139             :      * Visibility condition --- which rows are visible without schema
     140             :      * qualification?  For example, "pg_catalog.pg_table_is_visible(c.oid)".
     141             :      */
     142             :     const char *viscondition;
     143             : 
     144             :     /*
     145             :      * Namespace --- name of field to join to pg_namespace.oid. For example,
     146             :      * "c.relnamespace".
     147             :      */
     148             :     const char *namespace;
     149             : 
     150             :     /*
     151             :      * Result --- the appropriately-quoted name to return, in the case of an
     152             :      * unqualified name.  For example, "pg_catalog.quote_ident(c.relname)".
     153             :      */
     154             :     const char *result;
     155             : 
     156             :     /*
     157             :      * In some cases a different result must be used for qualified names.
     158             :      * Enter that here, or write NULL if result can be used.
     159             :      */
     160             :     const char *qualresult;
     161             : } SchemaQuery;
     162             : 
     163             : 
     164             : /* Store maximum number of records we want from database queries
     165             :  * (implemented via SELECT ... LIMIT xx).
     166             :  */
     167             : static int  completion_max_records;
     168             : 
     169             : /*
     170             :  * Communication variables set by psql_completion (mostly in COMPLETE_WITH_FOO
     171             :  * macros) and then used by the completion callback functions.  Ugly but there
     172             :  * is no better way.
     173             :  */
     174             : static char completion_last_char;   /* last char of input word */
     175             : static const char *completion_charp;    /* to pass a string */
     176             : static const char *const *completion_charpp;    /* to pass a list of strings */
     177             : static const char *completion_info_charp;   /* to pass a second string */
     178             : static const char *completion_info_charp2;  /* to pass a third string */
     179             : static const VersionedQuery *completion_vquery; /* to pass a VersionedQuery */
     180             : static const SchemaQuery *completion_squery;    /* to pass a SchemaQuery */
     181             : static bool completion_case_sensitive;  /* completion is case sensitive */
     182             : static bool completion_force_quote; /* true to force-quote filenames */
     183             : 
     184             : /*
     185             :  * A few macros to ease typing. You can use these to complete the given
     186             :  * string with
     187             :  * 1) The results from a query you pass it. (Perhaps one of those below?)
     188             :  *    We support both simple and versioned queries.
     189             :  * 2) The results from a schema query you pass it.
     190             :  *    We support both simple and versioned schema queries.
     191             :  * 3) The items from a null-pointer-terminated list (with or without
     192             :  *    case-sensitive comparison); if the list is constant you can build it
     193             :  *    with COMPLETE_WITH() or COMPLETE_WITH_CS().
     194             :  * 4) The list of attributes of the given table (possibly schema-qualified).
     195             :  * 5) The list of arguments to the given function (possibly schema-qualified).
     196             :  */
     197             : #define COMPLETE_WITH_QUERY(query) \
     198             : do { \
     199             :     completion_charp = query; \
     200             :     matches = rl_completion_matches(text, complete_from_query); \
     201             : } while (0)
     202             : 
     203             : #define COMPLETE_WITH_VERSIONED_QUERY(query) \
     204             : do { \
     205             :     completion_vquery = query; \
     206             :     matches = rl_completion_matches(text, complete_from_versioned_query); \
     207             : } while (0)
     208             : 
     209             : #define COMPLETE_WITH_SCHEMA_QUERY(query, addon) \
     210             : do { \
     211             :     completion_squery = &(query); \
     212             :     completion_charp = addon; \
     213             :     matches = rl_completion_matches(text, complete_from_schema_query); \
     214             : } while (0)
     215             : 
     216             : #define COMPLETE_WITH_VERSIONED_SCHEMA_QUERY(query, addon) \
     217             : do { \
     218             :     completion_squery = query; \
     219             :     completion_vquery = addon; \
     220             :     matches = rl_completion_matches(text, complete_from_versioned_schema_query); \
     221             : } while (0)
     222             : 
     223             : /*
     224             :  * Caution: COMPLETE_WITH_CONST is not for general-purpose use; you probably
     225             :  * want COMPLETE_WITH() with one element, instead.
     226             :  */
     227             : #define COMPLETE_WITH_CONST(cs, con) \
     228             : do { \
     229             :     completion_case_sensitive = (cs); \
     230             :     completion_charp = (con); \
     231             :     matches = rl_completion_matches(text, complete_from_const); \
     232             : } while (0)
     233             : 
     234             : #define COMPLETE_WITH_LIST_INT(cs, list) \
     235             : do { \
     236             :     completion_case_sensitive = (cs); \
     237             :     completion_charpp = (list); \
     238             :     matches = rl_completion_matches(text, complete_from_list); \
     239             : } while (0)
     240             : 
     241             : #define COMPLETE_WITH_LIST(list) COMPLETE_WITH_LIST_INT(false, list)
     242             : #define COMPLETE_WITH_LIST_CS(list) COMPLETE_WITH_LIST_INT(true, list)
     243             : 
     244             : #define COMPLETE_WITH(...) \
     245             : do { \
     246             :     static const char *const list[] = { __VA_ARGS__, NULL }; \
     247             :     COMPLETE_WITH_LIST(list); \
     248             : } while (0)
     249             : 
     250             : #define COMPLETE_WITH_CS(...) \
     251             : do { \
     252             :     static const char *const list[] = { __VA_ARGS__, NULL }; \
     253             :     COMPLETE_WITH_LIST_CS(list); \
     254             : } while (0)
     255             : 
     256             : #define COMPLETE_WITH_ATTR(relation, addon) \
     257             : do { \
     258             :     char   *_completion_schema; \
     259             :     char   *_completion_table; \
     260             : \
     261             :     _completion_schema = strtokx(relation, " \t\n\r", ".", "\"", 0, \
     262             :                                  false, false, pset.encoding); \
     263             :     (void) strtokx(NULL, " \t\n\r", ".", "\"", 0, \
     264             :                    false, false, pset.encoding); \
     265             :     _completion_table = strtokx(NULL, " \t\n\r", ".", "\"", 0, \
     266             :                                 false, false, pset.encoding); \
     267             :     if (_completion_table == NULL) \
     268             :     { \
     269             :         completion_charp = Query_for_list_of_attributes  addon; \
     270             :         completion_info_charp = relation; \
     271             :     } \
     272             :     else \
     273             :     { \
     274             :         completion_charp = Query_for_list_of_attributes_with_schema  addon; \
     275             :         completion_info_charp = _completion_table; \
     276             :         completion_info_charp2 = _completion_schema; \
     277             :     } \
     278             :     matches = rl_completion_matches(text, complete_from_query); \
     279             : } while (0)
     280             : 
     281             : #define COMPLETE_WITH_ENUM_VALUE(type) \
     282             : do { \
     283             :     char   *_completion_schema; \
     284             :     char   *_completion_type; \
     285             : \
     286             :     _completion_schema = strtokx(type, " \t\n\r", ".", "\"", 0, \
     287             :                                  false, false, pset.encoding); \
     288             :     (void) strtokx(NULL, " \t\n\r", ".", "\"", 0, \
     289             :                    false, false, pset.encoding); \
     290             :     _completion_type = strtokx(NULL, " \t\n\r", ".", "\"", 0, \
     291             :                                false, false, pset.encoding);  \
     292             :     if (_completion_type == NULL)\
     293             :     { \
     294             :         completion_charp = Query_for_list_of_enum_values; \
     295             :         completion_info_charp = type; \
     296             :     } \
     297             :     else \
     298             :     { \
     299             :         completion_charp = Query_for_list_of_enum_values_with_schema; \
     300             :         completion_info_charp = _completion_type; \
     301             :         completion_info_charp2 = _completion_schema; \
     302             :     } \
     303             :     matches = rl_completion_matches(text, complete_from_query); \
     304             : } while (0)
     305             : 
     306             : #define COMPLETE_WITH_FUNCTION_ARG(function) \
     307             : do { \
     308             :     char   *_completion_schema; \
     309             :     char   *_completion_function; \
     310             : \
     311             :     _completion_schema = strtokx(function, " \t\n\r", ".", "\"", 0, \
     312             :                                  false, false, pset.encoding); \
     313             :     (void) strtokx(NULL, " \t\n\r", ".", "\"", 0, \
     314             :                    false, false, pset.encoding); \
     315             :     _completion_function = strtokx(NULL, " \t\n\r", ".", "\"", 0, \
     316             :                                    false, false, pset.encoding); \
     317             :     if (_completion_function == NULL) \
     318             :     { \
     319             :         completion_charp = Query_for_list_of_arguments; \
     320             :         completion_info_charp = function; \
     321             :     } \
     322             :     else \
     323             :     { \
     324             :         completion_charp = Query_for_list_of_arguments_with_schema; \
     325             :         completion_info_charp = _completion_function; \
     326             :         completion_info_charp2 = _completion_schema; \
     327             :     } \
     328             :     matches = rl_completion_matches(text, complete_from_query); \
     329             : } while (0)
     330             : 
     331             : /*
     332             :  * Assembly instructions for schema queries
     333             :  */
     334             : 
     335             : static const SchemaQuery Query_for_list_of_aggregates[] = {
     336             :     {
     337             :         .min_server_version = 110000,
     338             :         .catname = "pg_catalog.pg_proc p",
     339             :         .selcondition = "p.prokind = 'a'",
     340             :         .viscondition = "pg_catalog.pg_function_is_visible(p.oid)",
     341             :         .namespace = "p.pronamespace",
     342             :         .result = "pg_catalog.quote_ident(p.proname)",
     343             :     },
     344             :     {
     345             :         .catname = "pg_catalog.pg_proc p",
     346             :         .selcondition = "p.proisagg",
     347             :         .viscondition = "pg_catalog.pg_function_is_visible(p.oid)",
     348             :         .namespace = "p.pronamespace",
     349             :         .result = "pg_catalog.quote_ident(p.proname)",
     350             :     }
     351             : };
     352             : 
     353             : static const SchemaQuery Query_for_list_of_datatypes = {
     354             :     .catname = "pg_catalog.pg_type t",
     355             :     /* selcondition --- ignore table rowtypes and array types */
     356             :     .selcondition = "(t.typrelid = 0 "
     357             :     " OR (SELECT c.relkind = " CppAsString2(RELKIND_COMPOSITE_TYPE)
     358             :     "     FROM pg_catalog.pg_class c WHERE c.oid = t.typrelid)) "
     359             :     "AND t.typname !~ '^_'",
     360             :     .viscondition = "pg_catalog.pg_type_is_visible(t.oid)",
     361             :     .namespace = "t.typnamespace",
     362             :     .result = "pg_catalog.format_type(t.oid, NULL)",
     363             :     .qualresult = "pg_catalog.quote_ident(t.typname)",
     364             : };
     365             : 
     366             : static const SchemaQuery Query_for_list_of_composite_datatypes = {
     367             :     .catname = "pg_catalog.pg_type t",
     368             :     /* selcondition --- only get composite types */
     369             :     .selcondition = "(SELECT c.relkind = " CppAsString2(RELKIND_COMPOSITE_TYPE)
     370             :     " FROM pg_catalog.pg_class c WHERE c.oid = t.typrelid) "
     371             :     "AND t.typname !~ '^_'",
     372             :     .viscondition = "pg_catalog.pg_type_is_visible(t.oid)",
     373             :     .namespace = "t.typnamespace",
     374             :     .result = "pg_catalog.format_type(t.oid, NULL)",
     375             :     .qualresult = "pg_catalog.quote_ident(t.typname)",
     376             : };
     377             : 
     378             : static const SchemaQuery Query_for_list_of_domains = {
     379             :     .catname = "pg_catalog.pg_type t",
     380             :     .selcondition = "t.typtype = 'd'",
     381             :     .viscondition = "pg_catalog.pg_type_is_visible(t.oid)",
     382             :     .namespace = "t.typnamespace",
     383             :     .result = "pg_catalog.quote_ident(t.typname)",
     384             : };
     385             : 
     386             : /* Note: this intentionally accepts aggregates as well as plain functions */
     387             : static const SchemaQuery Query_for_list_of_functions[] = {
     388             :     {
     389             :         .min_server_version = 110000,
     390             :         .catname = "pg_catalog.pg_proc p",
     391             :         .selcondition = "p.prokind != 'p'",
     392             :         .viscondition = "pg_catalog.pg_function_is_visible(p.oid)",
     393             :         .namespace = "p.pronamespace",
     394             :         .result = "pg_catalog.quote_ident(p.proname)",
     395             :     },
     396             :     {
     397             :         .catname = "pg_catalog.pg_proc p",
     398             :         .viscondition = "pg_catalog.pg_function_is_visible(p.oid)",
     399             :         .namespace = "p.pronamespace",
     400             :         .result = "pg_catalog.quote_ident(p.proname)",
     401             :     }
     402             : };
     403             : 
     404             : static const SchemaQuery Query_for_list_of_procedures[] = {
     405             :     {
     406             :         .min_server_version = 110000,
     407             :         .catname = "pg_catalog.pg_proc p",
     408             :         .selcondition = "p.prokind = 'p'",
     409             :         .viscondition = "pg_catalog.pg_function_is_visible(p.oid)",
     410             :         .namespace = "p.pronamespace",
     411             :         .result = "pg_catalog.quote_ident(p.proname)",
     412             :     },
     413             :     {
     414             :         /* not supported in older versions */
     415             :         .catname = NULL,
     416             :     }
     417             : };
     418             : 
     419             : static const SchemaQuery Query_for_list_of_routines = {
     420             :     .catname = "pg_catalog.pg_proc p",
     421             :     .viscondition = "pg_catalog.pg_function_is_visible(p.oid)",
     422             :     .namespace = "p.pronamespace",
     423             :     .result = "pg_catalog.quote_ident(p.proname)",
     424             : };
     425             : 
     426             : static const SchemaQuery Query_for_list_of_sequences = {
     427             :     .catname = "pg_catalog.pg_class c",
     428             :     .selcondition = "c.relkind IN (" CppAsString2(RELKIND_SEQUENCE) ")",
     429             :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     430             :     .namespace = "c.relnamespace",
     431             :     .result = "pg_catalog.quote_ident(c.relname)",
     432             : };
     433             : 
     434             : static const SchemaQuery Query_for_list_of_foreign_tables = {
     435             :     .catname = "pg_catalog.pg_class c",
     436             :     .selcondition = "c.relkind IN (" CppAsString2(RELKIND_FOREIGN_TABLE) ")",
     437             :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     438             :     .namespace = "c.relnamespace",
     439             :     .result = "pg_catalog.quote_ident(c.relname)",
     440             : };
     441             : 
     442             : static const SchemaQuery Query_for_list_of_tables = {
     443             :     .catname = "pg_catalog.pg_class c",
     444             :     .selcondition =
     445             :     "c.relkind IN (" CppAsString2(RELKIND_RELATION) ", "
     446             :     CppAsString2(RELKIND_PARTITIONED_TABLE) ")",
     447             :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     448             :     .namespace = "c.relnamespace",
     449             :     .result = "pg_catalog.quote_ident(c.relname)",
     450             : };
     451             : 
     452             : static const SchemaQuery Query_for_list_of_partitioned_tables = {
     453             :     .catname = "pg_catalog.pg_class c",
     454             :     .selcondition = "c.relkind IN (" CppAsString2(RELKIND_PARTITIONED_TABLE) ")",
     455             :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     456             :     .namespace = "c.relnamespace",
     457             :     .result = "pg_catalog.quote_ident(c.relname)",
     458             : };
     459             : 
     460             : static const SchemaQuery Query_for_list_of_views = {
     461             :     .catname = "pg_catalog.pg_class c",
     462             :     .selcondition = "c.relkind IN (" CppAsString2(RELKIND_VIEW) ")",
     463             :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     464             :     .namespace = "c.relnamespace",
     465             :     .result = "pg_catalog.quote_ident(c.relname)",
     466             : };
     467             : 
     468             : static const SchemaQuery Query_for_list_of_matviews = {
     469             :     .catname = "pg_catalog.pg_class c",
     470             :     .selcondition = "c.relkind IN (" CppAsString2(RELKIND_MATVIEW) ")",
     471             :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     472             :     .namespace = "c.relnamespace",
     473             :     .result = "pg_catalog.quote_ident(c.relname)",
     474             : };
     475             : 
     476             : static const SchemaQuery Query_for_list_of_indexes = {
     477             :     .catname = "pg_catalog.pg_class c",
     478             :     .selcondition =
     479             :     "c.relkind IN (" CppAsString2(RELKIND_INDEX) ", "
     480             :     CppAsString2(RELKIND_PARTITIONED_INDEX) ")",
     481             :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     482             :     .namespace = "c.relnamespace",
     483             :     .result = "pg_catalog.quote_ident(c.relname)",
     484             : };
     485             : 
     486             : static const SchemaQuery Query_for_list_of_partitioned_indexes = {
     487             :     .catname = "pg_catalog.pg_class c",
     488             :     .selcondition = "c.relkind = " CppAsString2(RELKIND_PARTITIONED_INDEX),
     489             :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     490             :     .namespace = "c.relnamespace",
     491             :     .result = "pg_catalog.quote_ident(c.relname)",
     492             : };
     493             : 
     494             : 
     495             : /* All relations */
     496             : static const SchemaQuery Query_for_list_of_relations = {
     497             :     .catname = "pg_catalog.pg_class c",
     498             :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     499             :     .namespace = "c.relnamespace",
     500             :     .result = "pg_catalog.quote_ident(c.relname)",
     501             : };
     502             : 
     503             : /* partitioned relations */
     504             : static const SchemaQuery Query_for_list_of_partitioned_relations = {
     505             :     .catname = "pg_catalog.pg_class c",
     506             :     .selcondition = "c.relkind IN (" CppAsString2(RELKIND_PARTITIONED_TABLE)
     507             :     ", " CppAsString2(RELKIND_PARTITIONED_INDEX) ")",
     508             :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     509             :     .namespace = "c.relnamespace",
     510             :     .result = "pg_catalog.quote_ident(c.relname)",
     511             : };
     512             : 
     513             : static const SchemaQuery Query_for_list_of_operator_families = {
     514             :     .catname = "pg_catalog.pg_opfamily c",
     515             :     .viscondition = "pg_catalog.pg_opfamily_is_visible(c.oid)",
     516             :     .namespace = "c.opfnamespace",
     517             :     .result = "pg_catalog.quote_ident(c.opfname)",
     518             : };
     519             : 
     520             : /* Relations supporting INSERT, UPDATE or DELETE */
     521             : static const SchemaQuery Query_for_list_of_updatables = {
     522             :     .catname = "pg_catalog.pg_class c",
     523             :     .selcondition =
     524             :     "c.relkind IN (" CppAsString2(RELKIND_RELATION) ", "
     525             :     CppAsString2(RELKIND_FOREIGN_TABLE) ", "
     526             :     CppAsString2(RELKIND_VIEW) ", "
     527             :     CppAsString2(RELKIND_PARTITIONED_TABLE) ")",
     528             :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     529             :     .namespace = "c.relnamespace",
     530             :     .result = "pg_catalog.quote_ident(c.relname)",
     531             : };
     532             : 
     533             : /* Relations supporting SELECT */
     534             : static const SchemaQuery Query_for_list_of_selectables = {
     535             :     .catname = "pg_catalog.pg_class c",
     536             :     .selcondition =
     537             :     "c.relkind IN (" CppAsString2(RELKIND_RELATION) ", "
     538             :     CppAsString2(RELKIND_SEQUENCE) ", "
     539             :     CppAsString2(RELKIND_VIEW) ", "
     540             :     CppAsString2(RELKIND_MATVIEW) ", "
     541             :     CppAsString2(RELKIND_FOREIGN_TABLE) ", "
     542             :     CppAsString2(RELKIND_PARTITIONED_TABLE) ")",
     543             :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     544             :     .namespace = "c.relnamespace",
     545             :     .result = "pg_catalog.quote_ident(c.relname)",
     546             : };
     547             : 
     548             : /* Relations supporting GRANT are currently same as those supporting SELECT */
     549             : #define Query_for_list_of_grantables Query_for_list_of_selectables
     550             : 
     551             : /* Relations supporting ANALYZE */
     552             : static const SchemaQuery Query_for_list_of_analyzables = {
     553             :     .catname = "pg_catalog.pg_class c",
     554             :     .selcondition =
     555             :     "c.relkind IN (" CppAsString2(RELKIND_RELATION) ", "
     556             :     CppAsString2(RELKIND_PARTITIONED_TABLE) ", "
     557             :     CppAsString2(RELKIND_MATVIEW) ", "
     558             :     CppAsString2(RELKIND_FOREIGN_TABLE) ")",
     559             :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     560             :     .namespace = "c.relnamespace",
     561             :     .result = "pg_catalog.quote_ident(c.relname)",
     562             : };
     563             : 
     564             : /* Relations supporting index creation */
     565             : static const SchemaQuery Query_for_list_of_indexables = {
     566             :     .catname = "pg_catalog.pg_class c",
     567             :     .selcondition =
     568             :     "c.relkind IN (" CppAsString2(RELKIND_RELATION) ", "
     569             :     CppAsString2(RELKIND_PARTITIONED_TABLE) ", "
     570             :     CppAsString2(RELKIND_MATVIEW) ")",
     571             :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     572             :     .namespace = "c.relnamespace",
     573             :     .result = "pg_catalog.quote_ident(c.relname)",
     574             : };
     575             : 
     576             : /* Relations supporting VACUUM */
     577             : static const SchemaQuery Query_for_list_of_vacuumables = {
     578             :     .catname = "pg_catalog.pg_class c",
     579             :     .selcondition =
     580             :     "c.relkind IN (" CppAsString2(RELKIND_RELATION) ", "
     581             :     CppAsString2(RELKIND_MATVIEW) ")",
     582             :     .viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
     583             :     .namespace = "c.relnamespace",
     584             :     .result = "pg_catalog.quote_ident(c.relname)",
     585             : };
     586             : 
     587             : /* Relations supporting CLUSTER are currently same as those supporting VACUUM */
     588             : #define Query_for_list_of_clusterables Query_for_list_of_vacuumables
     589             : 
     590             : static const SchemaQuery Query_for_list_of_constraints_with_schema = {
     591             :     .catname = "pg_catalog.pg_constraint c",
     592             :     .selcondition = "c.conrelid <> 0",
     593             :     .viscondition = "true",       /* there is no pg_constraint_is_visible */
     594             :     .namespace = "c.connamespace",
     595             :     .result = "pg_catalog.quote_ident(c.conname)",
     596             : };
     597             : 
     598             : static const SchemaQuery Query_for_list_of_statistics = {
     599             :     .catname = "pg_catalog.pg_statistic_ext s",
     600             :     .viscondition = "pg_catalog.pg_statistics_obj_is_visible(s.oid)",
     601             :     .namespace = "s.stxnamespace",
     602             :     .result = "pg_catalog.quote_ident(s.stxname)",
     603             : };
     604             : 
     605             : 
     606             : /*
     607             :  * Queries to get lists of names of various kinds of things, possibly
     608             :  * restricted to names matching a partially entered name.  In these queries,
     609             :  * the first %s will be replaced by the text entered so far (suitably escaped
     610             :  * to become a SQL literal string).  %d will be replaced by the length of the
     611             :  * string (in unescaped form).  A second and third %s, if present, will be
     612             :  * replaced by a suitably-escaped version of the string provided in
     613             :  * completion_info_charp.  A fourth and fifth %s are similarly replaced by
     614             :  * completion_info_charp2.
     615             :  *
     616             :  * Beware that the allowed sequences of %s and %d are determined by
     617             :  * _complete_from_query().
     618             :  */
     619             : 
     620             : #define Query_for_list_of_attributes \
     621             : "SELECT pg_catalog.quote_ident(attname) "\
     622             : "  FROM pg_catalog.pg_attribute a, pg_catalog.pg_class c "\
     623             : " WHERE c.oid = a.attrelid "\
     624             : "   AND a.attnum > 0 "\
     625             : "   AND NOT a.attisdropped "\
     626             : "   AND substring(pg_catalog.quote_ident(attname),1,%d)='%s' "\
     627             : "   AND (pg_catalog.quote_ident(relname)='%s' "\
     628             : "        OR '\"' || relname || '\"'='%s') "\
     629             : "   AND pg_catalog.pg_table_is_visible(c.oid)"
     630             : 
     631             : #define Query_for_list_of_attribute_numbers \
     632             : "SELECT attnum "\
     633             : "  FROM pg_catalog.pg_attribute a, pg_catalog.pg_class c "\
     634             : " WHERE c.oid = a.attrelid "\
     635             : "   AND a.attnum > 0 "\
     636             : "   AND NOT a.attisdropped "\
     637             : "   AND substring(attnum::pg_catalog.text,1,%d)='%s' "\
     638             : "   AND (pg_catalog.quote_ident(relname)='%s' "\
     639             : "        OR '\"' || relname || '\"'='%s') "\
     640             : "   AND pg_catalog.pg_table_is_visible(c.oid)"
     641             : 
     642             : #define Query_for_list_of_attributes_with_schema \
     643             : "SELECT pg_catalog.quote_ident(attname) "\
     644             : "  FROM pg_catalog.pg_attribute a, pg_catalog.pg_class c, pg_catalog.pg_namespace n "\
     645             : " WHERE c.oid = a.attrelid "\
     646             : "   AND n.oid = c.relnamespace "\
     647             : "   AND a.attnum > 0 "\
     648             : "   AND NOT a.attisdropped "\
     649             : "   AND substring(pg_catalog.quote_ident(attname),1,%d)='%s' "\
     650             : "   AND (pg_catalog.quote_ident(relname)='%s' "\
     651             : "        OR '\"' || relname || '\"' ='%s') "\
     652             : "   AND (pg_catalog.quote_ident(nspname)='%s' "\
     653             : "        OR '\"' || nspname || '\"' ='%s') "
     654             : 
     655             : #define Query_for_list_of_enum_values \
     656             : "SELECT pg_catalog.quote_literal(enumlabel) "\
     657             : "  FROM pg_catalog.pg_enum e, pg_catalog.pg_type t "\
     658             : " WHERE t.oid = e.enumtypid "\
     659             : "   AND substring(pg_catalog.quote_literal(enumlabel),1,%d)='%s' "\
     660             : "   AND (pg_catalog.quote_ident(typname)='%s' "\
     661             : "        OR '\"' || typname || '\"'='%s') "\
     662             : "   AND pg_catalog.pg_type_is_visible(t.oid)"
     663             : 
     664             : #define Query_for_list_of_enum_values_with_schema \
     665             : "SELECT pg_catalog.quote_literal(enumlabel) "\
     666             : "  FROM pg_catalog.pg_enum e, pg_catalog.pg_type t, pg_catalog.pg_namespace n "\
     667             : " WHERE t.oid = e.enumtypid "\
     668             : "   AND n.oid = t.typnamespace "\
     669             : "   AND substring(pg_catalog.quote_literal(enumlabel),1,%d)='%s' "\
     670             : "   AND (pg_catalog.quote_ident(typname)='%s' "\
     671             : "        OR '\"' || typname || '\"'='%s') "\
     672             : "   AND (pg_catalog.quote_ident(nspname)='%s' "\
     673             : "        OR '\"' || nspname || '\"' ='%s') "
     674             : 
     675             : #define Query_for_list_of_template_databases \
     676             : "SELECT pg_catalog.quote_ident(d.datname) "\
     677             : "  FROM pg_catalog.pg_database d "\
     678             : " WHERE substring(pg_catalog.quote_ident(d.datname),1,%d)='%s' "\
     679             : "   AND (d.datistemplate OR pg_catalog.pg_has_role(d.datdba, 'USAGE'))"
     680             : 
     681             : #define Query_for_list_of_databases \
     682             : "SELECT pg_catalog.quote_ident(datname) FROM pg_catalog.pg_database "\
     683             : " WHERE substring(pg_catalog.quote_ident(datname),1,%d)='%s'"
     684             : 
     685             : #define Query_for_list_of_tablespaces \
     686             : "SELECT pg_catalog.quote_ident(spcname) FROM pg_catalog.pg_tablespace "\
     687             : " WHERE substring(pg_catalog.quote_ident(spcname),1,%d)='%s'"
     688             : 
     689             : #define Query_for_list_of_encodings \
     690             : " SELECT DISTINCT pg_catalog.pg_encoding_to_char(conforencoding) "\
     691             : "   FROM pg_catalog.pg_conversion "\
     692             : "  WHERE substring(pg_catalog.pg_encoding_to_char(conforencoding),1,%d)=UPPER('%s')"
     693             : 
     694             : #define Query_for_list_of_languages \
     695             : "SELECT pg_catalog.quote_ident(lanname) "\
     696             : "  FROM pg_catalog.pg_language "\
     697             : " WHERE lanname != 'internal' "\
     698             : "   AND substring(pg_catalog.quote_ident(lanname),1,%d)='%s'"
     699             : 
     700             : #define Query_for_list_of_schemas \
     701             : "SELECT pg_catalog.quote_ident(nspname) FROM pg_catalog.pg_namespace "\
     702             : " WHERE substring(pg_catalog.quote_ident(nspname),1,%d)='%s'"
     703             : 
     704             : #define Query_for_list_of_alter_system_set_vars \
     705             : "SELECT name FROM "\
     706             : " (SELECT pg_catalog.lower(name) AS name FROM pg_catalog.pg_settings "\
     707             : "  WHERE context != 'internal' "\
     708             : "  UNION ALL SELECT 'all') ss "\
     709             : " WHERE substring(name,1,%d)='%s'"
     710             : 
     711             : #define Query_for_list_of_set_vars \
     712             : "SELECT name FROM "\
     713             : " (SELECT pg_catalog.lower(name) AS name FROM pg_catalog.pg_settings "\
     714             : "  WHERE context IN ('user', 'superuser') "\
     715             : "  UNION ALL SELECT 'constraints' "\
     716             : "  UNION ALL SELECT 'transaction' "\
     717             : "  UNION ALL SELECT 'session' "\
     718             : "  UNION ALL SELECT 'role' "\
     719             : "  UNION ALL SELECT 'tablespace' "\
     720             : "  UNION ALL SELECT 'all') ss "\
     721             : " WHERE substring(name,1,%d)='%s'"
     722             : 
     723             : #define Query_for_list_of_show_vars \
     724             : "SELECT name FROM "\
     725             : " (SELECT pg_catalog.lower(name) AS name FROM pg_catalog.pg_settings "\
     726             : "  UNION ALL SELECT 'session authorization' "\
     727             : "  UNION ALL SELECT 'all') ss "\
     728             : " WHERE substring(name,1,%d)='%s'"
     729             : 
     730             : #define Query_for_list_of_roles \
     731             : " SELECT pg_catalog.quote_ident(rolname) "\
     732             : "   FROM pg_catalog.pg_roles "\
     733             : "  WHERE substring(pg_catalog.quote_ident(rolname),1,%d)='%s'"
     734             : 
     735             : #define Query_for_list_of_grant_roles \
     736             : " SELECT pg_catalog.quote_ident(rolname) "\
     737             : "   FROM pg_catalog.pg_roles "\
     738             : "  WHERE substring(pg_catalog.quote_ident(rolname),1,%d)='%s'"\
     739             : " UNION ALL SELECT 'PUBLIC'"\
     740             : " UNION ALL SELECT 'CURRENT_USER'"\
     741             : " UNION ALL SELECT 'SESSION_USER'"
     742             : 
     743             : /* the silly-looking length condition is just to eat up the current word */
     744             : #define Query_for_index_of_table \
     745             : "SELECT pg_catalog.quote_ident(c2.relname) "\
     746             : "  FROM pg_catalog.pg_class c1, pg_catalog.pg_class c2, pg_catalog.pg_index i"\
     747             : " WHERE c1.oid=i.indrelid and i.indexrelid=c2.oid"\
     748             : "       and (%d = pg_catalog.length('%s'))"\
     749             : "       and pg_catalog.quote_ident(c1.relname)='%s'"\
     750             : "       and pg_catalog.pg_table_is_visible(c2.oid)"
     751             : 
     752             : /* the silly-looking length condition is just to eat up the current word */
     753             : #define Query_for_constraint_of_table \
     754             : "SELECT pg_catalog.quote_ident(conname) "\
     755             : "  FROM pg_catalog.pg_class c1, pg_catalog.pg_constraint con "\
     756             : " WHERE c1.oid=conrelid and (%d = pg_catalog.length('%s'))"\
     757             : "       and pg_catalog.quote_ident(c1.relname)='%s'"\
     758             : "       and pg_catalog.pg_table_is_visible(c1.oid)"
     759             : 
     760             : #define Query_for_all_table_constraints \
     761             : "SELECT pg_catalog.quote_ident(conname) "\
     762             : "  FROM pg_catalog.pg_constraint c "\
     763             : " WHERE c.conrelid <> 0 "
     764             : 
     765             : /* the silly-looking length condition is just to eat up the current word */
     766             : #define Query_for_constraint_of_type \
     767             : "SELECT pg_catalog.quote_ident(conname) "\
     768             : "  FROM pg_catalog.pg_type t, pg_catalog.pg_constraint con "\
     769             : " WHERE t.oid=contypid and (%d = pg_catalog.length('%s'))"\
     770             : "       and pg_catalog.quote_ident(t.typname)='%s'"\
     771             : "       and pg_catalog.pg_type_is_visible(t.oid)"
     772             : 
     773             : /* the silly-looking length condition is just to eat up the current word */
     774             : #define Query_for_list_of_tables_for_constraint \
     775             : "SELECT pg_catalog.quote_ident(relname) "\
     776             : "  FROM pg_catalog.pg_class"\
     777             : " WHERE (%d = pg_catalog.length('%s'))"\
     778             : "   AND oid IN "\
     779             : "       (SELECT conrelid FROM pg_catalog.pg_constraint "\
     780             : "         WHERE pg_catalog.quote_ident(conname)='%s')"
     781             : 
     782             : /* the silly-looking length condition is just to eat up the current word */
     783             : #define Query_for_rule_of_table \
     784             : "SELECT pg_catalog.quote_ident(rulename) "\
     785             : "  FROM pg_catalog.pg_class c1, pg_catalog.pg_rewrite "\
     786             : " WHERE c1.oid=ev_class and (%d = pg_catalog.length('%s'))"\
     787             : "       and pg_catalog.quote_ident(c1.relname)='%s'"\
     788             : "       and pg_catalog.pg_table_is_visible(c1.oid)"
     789             : 
     790             : /* the silly-looking length condition is just to eat up the current word */
     791             : #define Query_for_list_of_tables_for_rule \
     792             : "SELECT pg_catalog.quote_ident(relname) "\
     793             : "  FROM pg_catalog.pg_class"\
     794             : " WHERE (%d = pg_catalog.length('%s'))"\
     795             : "   AND oid IN "\
     796             : "       (SELECT ev_class FROM pg_catalog.pg_rewrite "\
     797             : "         WHERE pg_catalog.quote_ident(rulename)='%s')"
     798             : 
     799             : /* the silly-looking length condition is just to eat up the current word */
     800             : #define Query_for_trigger_of_table \
     801             : "SELECT pg_catalog.quote_ident(tgname) "\
     802             : "  FROM pg_catalog.pg_class c1, pg_catalog.pg_trigger "\
     803             : " WHERE c1.oid=tgrelid and (%d = pg_catalog.length('%s'))"\
     804             : "       and pg_catalog.quote_ident(c1.relname)='%s'"\
     805             : "       and pg_catalog.pg_table_is_visible(c1.oid)"\
     806             : "       and not tgisinternal"
     807             : 
     808             : /* the silly-looking length condition is just to eat up the current word */
     809             : #define Query_for_list_of_tables_for_trigger \
     810             : "SELECT pg_catalog.quote_ident(relname) "\
     811             : "  FROM pg_catalog.pg_class"\
     812             : " WHERE (%d = pg_catalog.length('%s'))"\
     813             : "   AND oid IN "\
     814             : "       (SELECT tgrelid FROM pg_catalog.pg_trigger "\
     815             : "         WHERE pg_catalog.quote_ident(tgname)='%s')"
     816             : 
     817             : #define Query_for_list_of_ts_configurations \
     818             : "SELECT pg_catalog.quote_ident(cfgname) FROM pg_catalog.pg_ts_config "\
     819             : " WHERE substring(pg_catalog.quote_ident(cfgname),1,%d)='%s'"
     820             : 
     821             : #define Query_for_list_of_ts_dictionaries \
     822             : "SELECT pg_catalog.quote_ident(dictname) FROM pg_catalog.pg_ts_dict "\
     823             : " WHERE substring(pg_catalog.quote_ident(dictname),1,%d)='%s'"
     824             : 
     825             : #define Query_for_list_of_ts_parsers \
     826             : "SELECT pg_catalog.quote_ident(prsname) FROM pg_catalog.pg_ts_parser "\
     827             : " WHERE substring(pg_catalog.quote_ident(prsname),1,%d)='%s'"
     828             : 
     829             : #define Query_for_list_of_ts_templates \
     830             : "SELECT pg_catalog.quote_ident(tmplname) FROM pg_catalog.pg_ts_template "\
     831             : " WHERE substring(pg_catalog.quote_ident(tmplname),1,%d)='%s'"
     832             : 
     833             : #define Query_for_list_of_fdws \
     834             : " SELECT pg_catalog.quote_ident(fdwname) "\
     835             : "   FROM pg_catalog.pg_foreign_data_wrapper "\
     836             : "  WHERE substring(pg_catalog.quote_ident(fdwname),1,%d)='%s'"
     837             : 
     838             : #define Query_for_list_of_servers \
     839             : " SELECT pg_catalog.quote_ident(srvname) "\
     840             : "   FROM pg_catalog.pg_foreign_server "\
     841             : "  WHERE substring(pg_catalog.quote_ident(srvname),1,%d)='%s'"
     842             : 
     843             : #define Query_for_list_of_user_mappings \
     844             : " SELECT pg_catalog.quote_ident(usename) "\
     845             : "   FROM pg_catalog.pg_user_mappings "\
     846             : "  WHERE substring(pg_catalog.quote_ident(usename),1,%d)='%s'"
     847             : 
     848             : #define Query_for_list_of_access_methods \
     849             : " SELECT pg_catalog.quote_ident(amname) "\
     850             : "   FROM pg_catalog.pg_am "\
     851             : "  WHERE substring(pg_catalog.quote_ident(amname),1,%d)='%s'"
     852             : 
     853             : #define Query_for_list_of_index_access_methods \
     854             : " SELECT pg_catalog.quote_ident(amname) "\
     855             : "   FROM pg_catalog.pg_am "\
     856             : "  WHERE substring(pg_catalog.quote_ident(amname),1,%d)='%s' AND "\
     857             : "   amtype=" CppAsString2(AMTYPE_INDEX)
     858             : 
     859             : #define Query_for_list_of_table_access_methods \
     860             : " SELECT pg_catalog.quote_ident(amname) "\
     861             : "   FROM pg_catalog.pg_am "\
     862             : "  WHERE substring(pg_catalog.quote_ident(amname),1,%d)='%s' AND "\
     863             : "   amtype=" CppAsString2(AMTYPE_TABLE)
     864             : 
     865             : /* the silly-looking length condition is just to eat up the current word */
     866             : #define Query_for_list_of_arguments \
     867             : "SELECT pg_catalog.oidvectortypes(proargtypes)||')' "\
     868             : "  FROM pg_catalog.pg_proc "\
     869             : " WHERE (%d = pg_catalog.length('%s'))"\
     870             : "   AND (pg_catalog.quote_ident(proname)='%s'"\
     871             : "        OR '\"' || proname || '\"'='%s') "\
     872             : "   AND (pg_catalog.pg_function_is_visible(pg_proc.oid))"
     873             : 
     874             : /* the silly-looking length condition is just to eat up the current word */
     875             : #define Query_for_list_of_arguments_with_schema \
     876             : "SELECT pg_catalog.oidvectortypes(proargtypes)||')' "\
     877             : "  FROM pg_catalog.pg_proc p, pg_catalog.pg_namespace n "\
     878             : " WHERE (%d = pg_catalog.length('%s'))"\
     879             : "   AND n.oid = p.pronamespace "\
     880             : "   AND (pg_catalog.quote_ident(proname)='%s' "\
     881             : "        OR '\"' || proname || '\"' ='%s') "\
     882             : "   AND (pg_catalog.quote_ident(nspname)='%s' "\
     883             : "        OR '\"' || nspname || '\"' ='%s') "
     884             : 
     885             : #define Query_for_list_of_extensions \
     886             : " SELECT pg_catalog.quote_ident(extname) "\
     887             : "   FROM pg_catalog.pg_extension "\
     888             : "  WHERE substring(pg_catalog.quote_ident(extname),1,%d)='%s'"
     889             : 
     890             : #define Query_for_list_of_available_extensions \
     891             : " SELECT pg_catalog.quote_ident(name) "\
     892             : "   FROM pg_catalog.pg_available_extensions "\
     893             : "  WHERE substring(pg_catalog.quote_ident(name),1,%d)='%s' AND installed_version IS NULL"
     894             : 
     895             : /* the silly-looking length condition is just to eat up the current word */
     896             : #define Query_for_list_of_available_extension_versions \
     897             : " SELECT pg_catalog.quote_ident(version) "\
     898             : "   FROM pg_catalog.pg_available_extension_versions "\
     899             : "  WHERE (%d = pg_catalog.length('%s'))"\
     900             : "    AND pg_catalog.quote_ident(name)='%s'"
     901             : 
     902             : /* the silly-looking length condition is just to eat up the current word */
     903             : #define Query_for_list_of_available_extension_versions_with_TO \
     904             : " SELECT 'TO ' || pg_catalog.quote_ident(version) "\
     905             : "   FROM pg_catalog.pg_available_extension_versions "\
     906             : "  WHERE (%d = pg_catalog.length('%s'))"\
     907             : "    AND pg_catalog.quote_ident(name)='%s'"
     908             : 
     909             : #define Query_for_list_of_prepared_statements \
     910             : " SELECT pg_catalog.quote_ident(name) "\
     911             : "   FROM pg_catalog.pg_prepared_statements "\
     912             : "  WHERE substring(pg_catalog.quote_ident(name),1,%d)='%s'"
     913             : 
     914             : #define Query_for_list_of_event_triggers \
     915             : " SELECT pg_catalog.quote_ident(evtname) "\
     916             : "   FROM pg_catalog.pg_event_trigger "\
     917             : "  WHERE substring(pg_catalog.quote_ident(evtname),1,%d)='%s'"
     918             : 
     919             : #define Query_for_list_of_tablesample_methods \
     920             : " SELECT pg_catalog.quote_ident(proname) "\
     921             : "   FROM pg_catalog.pg_proc "\
     922             : "  WHERE prorettype = 'pg_catalog.tsm_handler'::pg_catalog.regtype AND "\
     923             : "        proargtypes[0] = 'pg_catalog.internal'::pg_catalog.regtype AND "\
     924             : "        substring(pg_catalog.quote_ident(proname),1,%d)='%s'"
     925             : 
     926             : #define Query_for_list_of_policies \
     927             : " SELECT pg_catalog.quote_ident(polname) "\
     928             : "   FROM pg_catalog.pg_policy "\
     929             : "  WHERE substring(pg_catalog.quote_ident(polname),1,%d)='%s'"
     930             : 
     931             : #define Query_for_list_of_tables_for_policy \
     932             : "SELECT pg_catalog.quote_ident(relname) "\
     933             : "  FROM pg_catalog.pg_class"\
     934             : " WHERE (%d = pg_catalog.length('%s'))"\
     935             : "   AND oid IN "\
     936             : "       (SELECT polrelid FROM pg_catalog.pg_policy "\
     937             : "         WHERE pg_catalog.quote_ident(polname)='%s')"
     938             : 
     939             : #define Query_for_enum \
     940             : " SELECT name FROM ( "\
     941             : "   SELECT pg_catalog.quote_ident(pg_catalog.unnest(enumvals)) AS name "\
     942             : "     FROM pg_catalog.pg_settings "\
     943             : "    WHERE pg_catalog.lower(name)=pg_catalog.lower('%s') "\
     944             : "    UNION ALL " \
     945             : "   SELECT 'DEFAULT' ) ss "\
     946             : "  WHERE pg_catalog.substring(name,1,%%d)='%%s'"
     947             : 
     948             : /* the silly-looking length condition is just to eat up the current word */
     949             : #define Query_for_partition_of_table \
     950             : "SELECT pg_catalog.quote_ident(c2.relname) "\
     951             : "  FROM pg_catalog.pg_class c1, pg_catalog.pg_class c2, pg_catalog.pg_inherits i"\
     952             : " WHERE c1.oid=i.inhparent and i.inhrelid=c2.oid"\
     953             : "       and (%d = pg_catalog.length('%s'))"\
     954             : "       and pg_catalog.quote_ident(c1.relname)='%s'"\
     955             : "       and pg_catalog.pg_table_is_visible(c2.oid)"\
     956             : "       and c2.relispartition = 'true'"
     957             : 
     958             : /*
     959             :  * These object types were introduced later than our support cutoff of
     960             :  * server version 7.4.  We use the VersionedQuery infrastructure so that
     961             :  * we don't send certain-to-fail queries to older servers.
     962             :  */
     963             : 
     964             : static const VersionedQuery Query_for_list_of_publications[] = {
     965             :     {100000,
     966             :         " SELECT pg_catalog.quote_ident(pubname) "
     967             :         "   FROM pg_catalog.pg_publication "
     968             :         "  WHERE substring(pg_catalog.quote_ident(pubname),1,%d)='%s'"
     969             :     },
     970             :     {0, NULL}
     971             : };
     972             : 
     973             : static const VersionedQuery Query_for_list_of_subscriptions[] = {
     974             :     {100000,
     975             :         " SELECT pg_catalog.quote_ident(s.subname) "
     976             :         "   FROM pg_catalog.pg_subscription s, pg_catalog.pg_database d "
     977             :         "  WHERE substring(pg_catalog.quote_ident(s.subname),1,%d)='%s' "
     978             :         "    AND d.datname = pg_catalog.current_database() "
     979             :         "    AND s.subdbid = d.oid"
     980             :     },
     981             :     {0, NULL}
     982             : };
     983             : 
     984             : /*
     985             :  * This is a list of all "things" in Pgsql, which can show up after CREATE or
     986             :  * DROP; and there is also a query to get a list of them.
     987             :  */
     988             : 
     989             : typedef struct
     990             : {
     991             :     const char *name;
     992             :     const char *query;          /* simple query, or NULL */
     993             :     const VersionedQuery *vquery;   /* versioned query, or NULL */
     994             :     const SchemaQuery *squery;  /* schema query, or NULL */
     995             :     const bits32 flags;         /* visibility flags, see below */
     996             : } pgsql_thing_t;
     997             : 
     998             : #define THING_NO_CREATE     (1 << 0)  /* should not show up after CREATE */
     999             : #define THING_NO_DROP       (1 << 1)  /* should not show up after DROP */
    1000             : #define THING_NO_ALTER      (1 << 2)  /* should not show up after ALTER */
    1001             : #define THING_NO_SHOW       (THING_NO_CREATE | THING_NO_DROP | THING_NO_ALTER)
    1002             : 
    1003             : static const pgsql_thing_t words_after_create[] = {
    1004             :     {"ACCESS METHOD", NULL, NULL, NULL, THING_NO_ALTER},
    1005             :     {"AGGREGATE", NULL, NULL, Query_for_list_of_aggregates},
    1006             :     {"CAST", NULL, NULL, NULL}, /* Casts have complex structures for names, so
    1007             :                                  * skip it */
    1008             :     {"COLLATION", "SELECT pg_catalog.quote_ident(collname) FROM pg_catalog.pg_collation WHERE collencoding IN (-1, pg_catalog.pg_char_to_encoding(pg_catalog.getdatabaseencoding())) AND substring(pg_catalog.quote_ident(collname),1,%d)='%s'"},
    1009             : 
    1010             :     /*
    1011             :      * CREATE CONSTRAINT TRIGGER is not supported here because it is designed
    1012             :      * to be used only by pg_dump.
    1013             :      */
    1014             :     {"CONFIGURATION", Query_for_list_of_ts_configurations, NULL, NULL, THING_NO_SHOW},
    1015             :     {"CONVERSION", "SELECT pg_catalog.quote_ident(conname) FROM pg_catalog.pg_conversion WHERE substring(pg_catalog.quote_ident(conname),1,%d)='%s'"},
    1016             :     {"DATABASE", Query_for_list_of_databases},
    1017             :     {"DEFAULT PRIVILEGES", NULL, NULL, NULL, THING_NO_CREATE | THING_NO_DROP},
    1018             :     {"DICTIONARY", Query_for_list_of_ts_dictionaries, NULL, NULL, THING_NO_SHOW},
    1019             :     {"DOMAIN", NULL, NULL, &Query_for_list_of_domains},
    1020             :     {"EVENT TRIGGER", NULL, NULL, NULL},
    1021             :     {"EXTENSION", Query_for_list_of_extensions},
    1022             :     {"FOREIGN DATA WRAPPER", NULL, NULL, NULL},
    1023             :     {"FOREIGN TABLE", NULL, NULL, NULL},
    1024             :     {"FUNCTION", NULL, NULL, Query_for_list_of_functions},
    1025             :     {"GROUP", Query_for_list_of_roles},
    1026             :     {"INDEX", NULL, NULL, &Query_for_list_of_indexes},
    1027             :     {"LANGUAGE", Query_for_list_of_languages},
    1028             :     {"LARGE OBJECT", NULL, NULL, NULL, THING_NO_CREATE | THING_NO_DROP},
    1029             :     {"MATERIALIZED VIEW", NULL, NULL, &Query_for_list_of_matviews},
    1030             :     {"OPERATOR", NULL, NULL, NULL}, /* Querying for this is probably not such
    1031             :                                      * a good idea. */
    1032             :     {"OR REPLACE", NULL, NULL, NULL, THING_NO_DROP | THING_NO_ALTER},
    1033             :     {"OWNED", NULL, NULL, NULL, THING_NO_CREATE | THING_NO_ALTER},    /* for DROP OWNED BY ... */
    1034             :     {"PARSER", Query_for_list_of_ts_parsers, NULL, NULL, THING_NO_SHOW},
    1035             :     {"POLICY", NULL, NULL, NULL},
    1036             :     {"PROCEDURE", NULL, NULL, Query_for_list_of_procedures},
    1037             :     {"PUBLICATION", NULL, Query_for_list_of_publications},
    1038             :     {"ROLE", Query_for_list_of_roles},
    1039             :     {"ROUTINE", NULL, NULL, &Query_for_list_of_routines, THING_NO_CREATE},
    1040             :     {"RULE", "SELECT pg_catalog.quote_ident(rulename) FROM pg_catalog.pg_rules WHERE substring(pg_catalog.quote_ident(rulename),1,%d)='%s'"},
    1041             :     {"SCHEMA", Query_for_list_of_schemas},
    1042             :     {"SEQUENCE", NULL, NULL, &Query_for_list_of_sequences},
    1043             :     {"SERVER", Query_for_list_of_servers},
    1044             :     {"STATISTICS", NULL, NULL, &Query_for_list_of_statistics},
    1045             :     {"SUBSCRIPTION", NULL, Query_for_list_of_subscriptions},
    1046             :     {"SYSTEM", NULL, NULL, NULL, THING_NO_CREATE | THING_NO_DROP},
    1047             :     {"TABLE", NULL, NULL, &Query_for_list_of_tables},
    1048             :     {"TABLESPACE", Query_for_list_of_tablespaces},
    1049             :     {"TEMP", NULL, NULL, NULL, THING_NO_DROP | THING_NO_ALTER}, /* for CREATE TEMP TABLE
    1050             :                                                                  * ... */
    1051             :     {"TEMPLATE", Query_for_list_of_ts_templates, NULL, NULL, THING_NO_SHOW},
    1052             :     {"TEMPORARY", NULL, NULL, NULL, THING_NO_DROP | THING_NO_ALTER},  /* for CREATE TEMPORARY
    1053             :                                                                          * TABLE ... */
    1054             :     {"TEXT SEARCH", NULL, NULL, NULL},
    1055             :     {"TRANSFORM", NULL, NULL, NULL},
    1056             :     {"TRIGGER", "SELECT pg_catalog.quote_ident(tgname) FROM pg_catalog.pg_trigger WHERE substring(pg_catalog.quote_ident(tgname),1,%d)='%s' AND NOT tgisinternal"},
    1057             :     {"TYPE", NULL, NULL, &Query_for_list_of_datatypes},
    1058             :     {"UNIQUE", NULL, NULL, NULL, THING_NO_DROP | THING_NO_ALTER}, /* for CREATE UNIQUE
    1059             :                                                                      * INDEX ... */
    1060             :     {"UNLOGGED", NULL, NULL, NULL, THING_NO_DROP | THING_NO_ALTER}, /* for CREATE UNLOGGED
    1061             :                                                                      * TABLE ... */
    1062             :     {"USER", Query_for_list_of_roles " UNION SELECT 'MAPPING FOR'"},
    1063             :     {"USER MAPPING FOR", NULL, NULL, NULL},
    1064             :     {"VIEW", NULL, NULL, &Query_for_list_of_views},
    1065             :     {NULL}                      /* end of list */
    1066             : };
    1067             : 
    1068             : /* Storage parameters for CREATE TABLE and ALTER TABLE */
    1069             : static const char *const table_storage_parameters[] = {
    1070             :     "autovacuum_analyze_scale_factor",
    1071             :     "autovacuum_analyze_threshold",
    1072             :     "autovacuum_enabled",
    1073             :     "autovacuum_freeze_max_age",
    1074             :     "autovacuum_freeze_min_age",
    1075             :     "autovacuum_freeze_table_age",
    1076             :     "autovacuum_multixact_freeze_max_age",
    1077             :     "autovacuum_multixact_freeze_min_age",
    1078             :     "autovacuum_multixact_freeze_table_age",
    1079             :     "autovacuum_vacuum_cost_delay",
    1080             :     "autovacuum_vacuum_cost_limit",
    1081             :     "autovacuum_vacuum_insert_scale_factor",
    1082             :     "autovacuum_vacuum_insert_threshold",
    1083             :     "autovacuum_vacuum_scale_factor",
    1084             :     "autovacuum_vacuum_threshold",
    1085             :     "fillfactor",
    1086             :     "log_autovacuum_min_duration",
    1087             :     "parallel_workers",
    1088             :     "toast.autovacuum_enabled",
    1089             :     "toast.autovacuum_freeze_max_age",
    1090             :     "toast.autovacuum_freeze_min_age",
    1091             :     "toast.autovacuum_freeze_table_age",
    1092             :     "toast.autovacuum_multixact_freeze_max_age",
    1093             :     "toast.autovacuum_multixact_freeze_min_age",
    1094             :     "toast.autovacuum_multixact_freeze_table_age",
    1095             :     "toast.autovacuum_vacuum_cost_delay",
    1096             :     "toast.autovacuum_vacuum_cost_limit",
    1097             :     "toast.autovacuum_vacuum_insert_scale_factor",
    1098             :     "toast.autovacuum_vacuum_insert_threshold",
    1099             :     "toast.autovacuum_vacuum_scale_factor",
    1100             :     "toast.autovacuum_vacuum_threshold",
    1101             :     "toast.log_autovacuum_min_duration",
    1102             :     "toast.vacuum_index_cleanup",
    1103             :     "toast.vacuum_truncate",
    1104             :     "toast_tuple_target",
    1105             :     "user_catalog_table",
    1106             :     "vacuum_index_cleanup",
    1107             :     "vacuum_truncate",
    1108             :     NULL
    1109             : };
    1110             : 
    1111             : 
    1112             : /* Forward declaration of functions */
    1113             : static char **psql_completion(const char *text, int start, int end);
    1114             : static char *create_command_generator(const char *text, int state);
    1115             : static char *drop_command_generator(const char *text, int state);
    1116             : static char *alter_command_generator(const char *text, int state);
    1117             : static char *complete_from_query(const char *text, int state);
    1118             : static char *complete_from_versioned_query(const char *text, int state);
    1119             : static char *complete_from_schema_query(const char *text, int state);
    1120             : static char *complete_from_versioned_schema_query(const char *text, int state);
    1121             : static char *_complete_from_query(const char *simple_query,
    1122             :                                   const SchemaQuery *schema_query,
    1123             :                                   const char *text, int state);
    1124             : static char *complete_from_list(const char *text, int state);
    1125             : static char *complete_from_const(const char *text, int state);
    1126             : static void append_variable_names(char ***varnames, int *nvars,
    1127             :                                   int *maxvars, const char *varname,
    1128             :                                   const char *prefix, const char *suffix);
    1129             : static char **complete_from_variables(const char *text,
    1130             :                                       const char *prefix, const char *suffix, bool need_value);
    1131             : static char *complete_from_files(const char *text, int state);
    1132             : 
    1133             : static char *pg_strdup_keyword_case(const char *s, const char *ref);
    1134             : static char *escape_string(const char *text);
    1135             : static PGresult *exec_query(const char *query);
    1136             : 
    1137             : static char **get_previous_words(int point, char **buffer, int *nwords);
    1138             : 
    1139             : static char *get_guctype(const char *varname);
    1140             : 
    1141             : #ifdef USE_FILENAME_QUOTING_FUNCTIONS
    1142             : static char *quote_file_name(char *fname, int match_type, char *quote_pointer);
    1143             : static char *dequote_file_name(char *fname, int quote_char);
    1144             : #endif
    1145             : 
    1146             : 
    1147             : /*
    1148             :  * Initialize the readline library for our purposes.
    1149             :  */
    1150             : void
    1151           2 : initialize_readline(void)
    1152             : {
    1153           2 :     rl_readline_name = (char *) pset.progname;
    1154           2 :     rl_attempted_completion_function = psql_completion;
    1155             : 
    1156             : #ifdef USE_FILENAME_QUOTING_FUNCTIONS
    1157           2 :     rl_filename_quoting_function = quote_file_name;
    1158           2 :     rl_filename_dequoting_function = dequote_file_name;
    1159             : #endif
    1160             : 
    1161           2 :     rl_basic_word_break_characters = WORD_BREAKS;
    1162             : 
    1163             :     /*
    1164             :      * We should include '"' in rl_completer_quote_characters too, but that
    1165             :      * will require some upgrades to how we handle quoted identifiers, so
    1166             :      * that's for another day.
    1167             :      */
    1168           2 :     rl_completer_quote_characters = "'";
    1169             : 
    1170             :     /*
    1171             :      * Set rl_filename_quote_characters to "all possible characters",
    1172             :      * otherwise Readline will skip filename quoting if it thinks a filename
    1173             :      * doesn't need quoting.  Readline actually interprets this as bytes, so
    1174             :      * there are no encoding considerations here.
    1175             :      */
    1176             : #ifdef HAVE_RL_FILENAME_QUOTE_CHARACTERS
    1177             :     {
    1178           2 :         unsigned char *fqc = (unsigned char *) pg_malloc(256);
    1179             : 
    1180         512 :         for (int i = 0; i < 255; i++)
    1181         510 :             fqc[i] = (unsigned char) (i + 1);
    1182           2 :         fqc[255] = '\0';
    1183           2 :         rl_filename_quote_characters = (const char *) fqc;
    1184             :     }
    1185             : #endif
    1186             : 
    1187           2 :     completion_max_records = 1000;
    1188             : 
    1189             :     /*
    1190             :      * There is a variable rl_completion_query_items for this but apparently
    1191             :      * it's not defined everywhere.
    1192             :      */
    1193           2 : }
    1194             : 
    1195             : /*
    1196             :  * Check if 'word' matches any of the '|'-separated strings in 'pattern',
    1197             :  * using case-insensitive or case-sensitive comparisons.
    1198             :  *
    1199             :  * If pattern is NULL, it's a wild card that matches any word.
    1200             :  * If pattern begins with '!', the result is negated, ie we check that 'word'
    1201             :  * does *not* match any alternative appearing in the rest of 'pattern'.
    1202             :  * Any alternative can contain '*' which is a wild card, i.e., it can match
    1203             :  * any substring; however, we allow at most one '*' per alternative.
    1204             :  *
    1205             :  * For readability, callers should use the macros MatchAny and MatchAnyExcept
    1206             :  * to invoke those two special cases for 'pattern'.  (But '|' and '*' must
    1207             :  * just be written directly in patterns.)
    1208             :  */
    1209             : #define MatchAny  NULL
    1210             : #define MatchAnyExcept(pattern)  ("!" pattern)
    1211             : 
    1212             : static bool
    1213        2538 : word_matches(const char *pattern,
    1214             :              const char *word,
    1215             :              bool case_sensitive)
    1216             : {
    1217             :     size_t      wordlen;
    1218             : 
    1219             : #define cimatch(s1, s2, n) \
    1220             :     (case_sensitive ? strncmp(s1, s2, n) == 0 : pg_strncasecmp(s1, s2, n) == 0)
    1221             : 
    1222             :     /* NULL pattern matches anything. */
    1223        2538 :     if (pattern == NULL)
    1224          18 :         return true;
    1225             : 
    1226             :     /* Handle negated patterns from the MatchAnyExcept macro. */
    1227        2520 :     if (*pattern == '!')
    1228           0 :         return !word_matches(pattern + 1, word, case_sensitive);
    1229             : 
    1230             :     /* Else consider each alternative in the pattern. */
    1231        2520 :     wordlen = strlen(word);
    1232             :     for (;;)
    1233         284 :     {
    1234        2804 :         const char *star = NULL;
    1235             :         const char *c;
    1236             : 
    1237             :         /* Find end of current alternative, and locate any wild card. */
    1238        2804 :         c = pattern;
    1239       18256 :         while (*c != '\0' && *c != '|')
    1240             :         {
    1241       15452 :             if (*c == '*')
    1242         132 :                 star = c;
    1243       15452 :             c++;
    1244             :         }
    1245             :         /* Was there a wild card? */
    1246        2804 :         if (star)
    1247             :         {
    1248             :             /* Yes, wildcard match? */
    1249         132 :             size_t      beforelen = star - pattern,
    1250         132 :                         afterlen = c - star - 1;
    1251             : 
    1252         264 :             if (wordlen >= (beforelen + afterlen) &&
    1253         148 :                 cimatch(word, pattern, beforelen) &&
    1254           8 :                 cimatch(word + wordlen - afterlen, star + 1, afterlen))
    1255           8 :                 return true;
    1256             :         }
    1257             :         else
    1258             :         {
    1259             :             /* No, plain match? */
    1260        3256 :             if (wordlen == (c - pattern) &&
    1261         584 :                 cimatch(word, pattern, wordlen))
    1262          38 :                 return true;
    1263             :         }
    1264             :         /* Out of alternatives? */
    1265        2758 :         if (*c == '\0')
    1266        2474 :             break;
    1267             :         /* Nope, try next alternative. */
    1268         284 :         pattern = c + 1;
    1269             :     }
    1270             : 
    1271        2474 :     return false;
    1272             : }
    1273             : 
    1274             : /*
    1275             :  * Implementation of TailMatches and TailMatchesCS macros: do the last N words
    1276             :  * in previous_words match the variadic arguments?
    1277             :  *
    1278             :  * The array indexing might look backwards, but remember that
    1279             :  * previous_words[0] contains the *last* word on the line, not the first.
    1280             :  */
    1281             : static bool
    1282        1628 : TailMatchesImpl(bool case_sensitive,
    1283             :                 int previous_words_count, char **previous_words,
    1284             :                 int narg,...)
    1285             : {
    1286             :     va_list     args;
    1287             : 
    1288        1628 :     if (previous_words_count < narg)
    1289         874 :         return false;
    1290             : 
    1291         754 :     va_start(args, narg);
    1292             : 
    1293         786 :     for (int argno = 0; argno < narg; argno++)
    1294             :     {
    1295         764 :         const char *arg = va_arg(args, const char *);
    1296             : 
    1297         764 :         if (!word_matches(arg, previous_words[narg - argno - 1],
    1298             :                           case_sensitive))
    1299             :         {
    1300         732 :             va_end(args);
    1301         732 :             return false;
    1302             :         }
    1303             :     }
    1304             : 
    1305          22 :     va_end(args);
    1306             : 
    1307          22 :     return true;
    1308             : }
    1309             : 
    1310             : /*
    1311             :  * Implementation of Matches and MatchesCS macros: do all of the words
    1312             :  * in previous_words match the variadic arguments?
    1313             :  */
    1314             : static bool
    1315        6958 : MatchesImpl(bool case_sensitive,
    1316             :             int previous_words_count, char **previous_words,
    1317             :             int narg,...)
    1318             : {
    1319             :     va_list     args;
    1320             : 
    1321        6958 :     if (previous_words_count != narg)
    1322        5734 :         return false;
    1323             : 
    1324        1224 :     va_start(args, narg);
    1325             : 
    1326        1256 :     for (int argno = 0; argno < narg; argno++)
    1327             :     {
    1328        1248 :         const char *arg = va_arg(args, const char *);
    1329             : 
    1330        1248 :         if (!word_matches(arg, previous_words[narg - argno - 1],
    1331             :                           case_sensitive))
    1332             :         {
    1333        1216 :             va_end(args);
    1334        1216 :             return false;
    1335             :         }
    1336             :     }
    1337             : 
    1338           8 :     va_end(args);
    1339             : 
    1340           8 :     return true;
    1341             : }
    1342             : 
    1343             : /*
    1344             :  * Implementation of HeadMatches and HeadMatchesCS macros: do the first N
    1345             :  * words in previous_words match the variadic arguments?
    1346             :  */
    1347             : static bool
    1348         710 : HeadMatchesImpl(bool case_sensitive,
    1349             :                 int previous_words_count, char **previous_words,
    1350             :                 int narg,...)
    1351             : {
    1352             :     va_list     args;
    1353             : 
    1354         710 :     if (previous_words_count < narg)
    1355         184 :         return false;
    1356             : 
    1357         526 :     va_start(args, narg);
    1358             : 
    1359         526 :     for (int argno = 0; argno < narg; argno++)
    1360             :     {
    1361         526 :         const char *arg = va_arg(args, const char *);
    1362             : 
    1363         526 :         if (!word_matches(arg, previous_words[previous_words_count - argno - 1],
    1364             :                           case_sensitive))
    1365             :         {
    1366         526 :             va_end(args);
    1367         526 :             return false;
    1368             :         }
    1369             :     }
    1370             : 
    1371           0 :     va_end(args);
    1372             : 
    1373           0 :     return true;
    1374             : }
    1375             : 
    1376             : /*
    1377             :  * Check if the final character of 's' is 'c'.
    1378             :  */
    1379             : static bool
    1380           0 : ends_with(const char *s, char c)
    1381             : {
    1382           0 :     size_t      length = strlen(s);
    1383             : 
    1384           0 :     return (length > 0 && s[length - 1] == c);
    1385             : }
    1386             : 
    1387             : /*
    1388             :  * The completion function.
    1389             :  *
    1390             :  * According to readline spec this gets passed the text entered so far and its
    1391             :  * start and end positions in the readline buffer. The return value is some
    1392             :  * partially obscure list format that can be generated by readline's
    1393             :  * rl_completion_matches() function, so we don't have to worry about it.
    1394             :  */
    1395             : static char **
    1396          28 : psql_completion(const char *text, int start, int end)
    1397             : {
    1398             :     /* This is the variable we'll return. */
    1399          28 :     char      **matches = NULL;
    1400             : 
    1401             :     /* Workspace for parsed words. */
    1402             :     char       *words_buffer;
    1403             : 
    1404             :     /* This array will contain pointers to parsed words. */
    1405             :     char      **previous_words;
    1406             : 
    1407             :     /* The number of words found on the input line. */
    1408             :     int         previous_words_count;
    1409             : 
    1410             :     /*
    1411             :      * For compactness, we use these macros to reference previous_words[].
    1412             :      * Caution: do not access a previous_words[] entry without having checked
    1413             :      * previous_words_count to be sure it's valid.  In most cases below, that
    1414             :      * check is implicit in a TailMatches() or similar macro, but in some
    1415             :      * places we have to check it explicitly.
    1416             :      */
    1417             : #define prev_wd   (previous_words[0])
    1418             : #define prev2_wd  (previous_words[1])
    1419             : #define prev3_wd  (previous_words[2])
    1420             : #define prev4_wd  (previous_words[3])
    1421             : #define prev5_wd  (previous_words[4])
    1422             : #define prev6_wd  (previous_words[5])
    1423             : #define prev7_wd  (previous_words[6])
    1424             : #define prev8_wd  (previous_words[7])
    1425             : #define prev9_wd  (previous_words[8])
    1426             : 
    1427             :     /* Match the last N words before point, case-insensitively. */
    1428             : #define TailMatches(...) \
    1429             :     TailMatchesImpl(false, previous_words_count, previous_words, \
    1430             :                     VA_ARGS_NARGS(__VA_ARGS__), __VA_ARGS__)
    1431             : 
    1432             :     /* Match the last N words before point, case-sensitively. */
    1433             : #define TailMatchesCS(...) \
    1434             :     TailMatchesImpl(true, previous_words_count, previous_words, \
    1435             :                     VA_ARGS_NARGS(__VA_ARGS__), __VA_ARGS__)
    1436             : 
    1437             :     /* Match N words representing all of the line, case-insensitively. */
    1438             : #define Matches(...) \
    1439             :     MatchesImpl(false, previous_words_count, previous_words, \
    1440             :                 VA_ARGS_NARGS(__VA_ARGS__), __VA_ARGS__)
    1441             : 
    1442             :     /* Match N words representing all of the line, case-sensitively. */
    1443             : #define MatchesCS(...) \
    1444             :     MatchesImpl(true, previous_words_count, previous_words, \
    1445             :                 VA_ARGS_NARGS(__VA_ARGS__), __VA_ARGS__)
    1446             : 
    1447             :     /* Match the first N words on the line, case-insensitively. */
    1448             : #define HeadMatches(...) \
    1449             :     HeadMatchesImpl(false, previous_words_count, previous_words, \
    1450             :                     VA_ARGS_NARGS(__VA_ARGS__), __VA_ARGS__)
    1451             : 
    1452             :     /* Match the first N words on the line, case-sensitively. */
    1453             : #define HeadMatchesCS(...) \
    1454             :     HeadMatchesImpl(true, previous_words_count, previous_words, \
    1455             :                     VA_ARGS_NARGS(__VA_ARGS__), __VA_ARGS__)
    1456             : 
    1457             :     /* Known command-starting keywords. */
    1458             :     static const char *const sql_commands[] = {
    1459             :         "ABORT", "ALTER", "ANALYZE", "BEGIN", "CALL", "CHECKPOINT", "CLOSE", "CLUSTER",
    1460             :         "COMMENT", "COMMIT", "COPY", "CREATE", "DEALLOCATE", "DECLARE",
    1461             :         "DELETE FROM", "DISCARD", "DO", "DROP", "END", "EXECUTE", "EXPLAIN",
    1462             :         "FETCH", "GRANT", "IMPORT", "INSERT", "LISTEN", "LOAD", "LOCK",
    1463             :         "MOVE", "NOTIFY", "PREPARE",
    1464             :         "REASSIGN", "REFRESH MATERIALIZED VIEW", "REINDEX", "RELEASE",
    1465             :         "RESET", "REVOKE", "ROLLBACK",
    1466             :         "SAVEPOINT", "SECURITY LABEL", "SELECT", "SET", "SHOW", "START",
    1467             :         "TABLE", "TRUNCATE", "UNLISTEN", "UPDATE", "VACUUM", "VALUES", "WITH",
    1468             :         NULL
    1469             :     };
    1470             : 
    1471             :     /* psql's backslash commands. */
    1472             :     static const char *const backslash_commands[] = {
    1473             :         "\\a",
    1474             :         "\\connect", "\\conninfo", "\\C", "\\cd", "\\copy",
    1475             :         "\\copyright", "\\crosstabview",
    1476             :         "\\d", "\\da", "\\dA", "\\dAc", "\\dAf", "\\dAo", "\\dAp",
    1477             :         "\\db", "\\dc", "\\dC", "\\dd", "\\ddp", "\\dD",
    1478             :         "\\des", "\\det", "\\deu", "\\dew", "\\dE", "\\df",
    1479             :         "\\dF", "\\dFd", "\\dFp", "\\dFt", "\\dg", "\\di", "\\dl", "\\dL",
    1480             :         "\\dm", "\\dn", "\\do", "\\dO", "\\dp", "\\dP", "\\dPi", "\\dPt",
    1481             :         "\\drds", "\\dRs", "\\dRp", "\\ds", "\\dS",
    1482             :         "\\dt", "\\dT", "\\dv", "\\du", "\\dx", "\\dy",
    1483             :         "\\e", "\\echo", "\\ef", "\\elif", "\\else", "\\encoding",
    1484             :         "\\endif", "\\errverbose", "\\ev",
    1485             :         "\\f",
    1486             :         "\\g", "\\gdesc", "\\gexec", "\\gset", "\\gx",
    1487             :         "\\h", "\\help", "\\H",
    1488             :         "\\i", "\\if", "\\ir",
    1489             :         "\\l", "\\lo_import", "\\lo_export", "\\lo_list", "\\lo_unlink",
    1490             :         "\\o",
    1491             :         "\\p", "\\password", "\\prompt", "\\pset",
    1492             :         "\\q", "\\qecho",
    1493             :         "\\r",
    1494             :         "\\s", "\\set", "\\setenv", "\\sf", "\\sv",
    1495             :         "\\t", "\\T", "\\timing",
    1496             :         "\\unset",
    1497             :         "\\x",
    1498             :         "\\w", "\\warn", "\\watch",
    1499             :         "\\z",
    1500             :         "\\!", "\\?",
    1501             :         NULL
    1502             :     };
    1503             : 
    1504             :     /*
    1505             :      * Temporary workaround for a bug in recent (2019) libedit: it incorrectly
    1506             :      * de-escapes the input "text", causing us to fail to recognize backslash
    1507             :      * commands.  So get the string to look at from rl_line_buffer instead.
    1508             :      */
    1509          28 :     char       *text_copy = pnstrdup(rl_line_buffer + start, end - start);
    1510          28 :     text = text_copy;
    1511             : 
    1512             :     /* Remember last char of the given input word. */
    1513          28 :     completion_last_char = (end > start) ? text[end - start - 1] : '\0';
    1514             : 
    1515             :     /* We usually want the append character to be a space. */
    1516             : #ifdef HAVE_RL_COMPLETION_APPEND_CHARACTER
    1517          28 :     rl_completion_append_character = ' ';
    1518             : #endif
    1519             : 
    1520             :     /* Clear a few things. */
    1521          28 :     completion_charp = NULL;
    1522          28 :     completion_charpp = NULL;
    1523          28 :     completion_info_charp = NULL;
    1524          28 :     completion_info_charp2 = NULL;
    1525             : 
    1526             :     /*
    1527             :      * Scan the input line to extract the words before our current position.
    1528             :      * According to those we'll make some smart decisions on what the user is
    1529             :      * probably intending to type.
    1530             :      */
    1531          28 :     previous_words = get_previous_words(start,
    1532             :                                         &words_buffer,
    1533             :                                         &previous_words_count);
    1534             : 
    1535             :     /* If current word is a backslash command, offer completions for that */
    1536          28 :     if (text[0] == '\\')
    1537           2 :         COMPLETE_WITH_LIST_CS(backslash_commands);
    1538             : 
    1539             :     /* If current word is a variable interpolation, handle that case */
    1540          26 :     else if (text[0] == ':' && text[1] != ':')
    1541             :     {
    1542           0 :         if (text[1] == '\'')
    1543           0 :             matches = complete_from_variables(text, ":'", "'", true);
    1544           0 :         else if (text[1] == '"')
    1545           0 :             matches = complete_from_variables(text, ":\"", "\"", true);
    1546             :         else
    1547           0 :             matches = complete_from_variables(text, ":", "", true);
    1548             :     }
    1549             : 
    1550             :     /* If no previous word, suggest one of the basic sql commands */
    1551          26 :     else if (previous_words_count == 0)
    1552           4 :         COMPLETE_WITH_LIST(sql_commands);
    1553             : 
    1554             : /* CREATE */
    1555             :     /* complete with something you can create */
    1556          22 :     else if (TailMatches("CREATE"))
    1557           0 :         matches = rl_completion_matches(text, create_command_generator);
    1558             : 
    1559             :     /* complete with something you can create or replace */
    1560          22 :     else if (TailMatches("CREATE", "OR", "REPLACE"))
    1561           0 :         COMPLETE_WITH("FUNCTION", "PROCEDURE", "LANGUAGE", "RULE", "VIEW",
    1562             :                       "AGGREGATE", "TRANSFORM");
    1563             : 
    1564             : /* DROP, but not DROP embedded in other commands */
    1565             :     /* complete with something you can drop */
    1566          22 :     else if (Matches("DROP"))
    1567           0 :         matches = rl_completion_matches(text, drop_command_generator);
    1568             : 
    1569             : /* ALTER */
    1570             : 
    1571             :     /* ALTER TABLE */
    1572          22 :     else if (Matches("ALTER", "TABLE"))
    1573           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables,
    1574             :                                    "UNION SELECT 'ALL IN TABLESPACE'");
    1575             : 
    1576             :     /* ALTER something */
    1577          22 :     else if (Matches("ALTER"))
    1578           0 :         matches = rl_completion_matches(text, alter_command_generator);
    1579             :     /* ALTER TABLE,INDEX,MATERIALIZED VIEW ALL IN TABLESPACE xxx */
    1580          22 :     else if (TailMatches("ALL", "IN", "TABLESPACE", MatchAny))
    1581           0 :         COMPLETE_WITH("SET TABLESPACE", "OWNED BY");
    1582             :     /* ALTER TABLE,INDEX,MATERIALIZED VIEW ALL IN TABLESPACE xxx OWNED BY */
    1583          22 :     else if (TailMatches("ALL", "IN", "TABLESPACE", MatchAny, "OWNED", "BY"))
    1584           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_roles);
    1585             :     /* ALTER TABLE,INDEX,MATERIALIZED VIEW ALL IN TABLESPACE xxx OWNED BY xxx */
    1586          22 :     else if (TailMatches("ALL", "IN", "TABLESPACE", MatchAny, "OWNED", "BY", MatchAny))
    1587           0 :         COMPLETE_WITH("SET TABLESPACE");
    1588             :     /* ALTER AGGREGATE,FUNCTION,PROCEDURE,ROUTINE <name> */
    1589          22 :     else if (Matches("ALTER", "AGGREGATE|FUNCTION|PROCEDURE|ROUTINE", MatchAny))
    1590           0 :         COMPLETE_WITH("(");
    1591             :     /* ALTER AGGREGATE,FUNCTION,PROCEDURE,ROUTINE <name> (...) */
    1592          22 :     else if (Matches("ALTER", "AGGREGATE|FUNCTION|PROCEDURE|ROUTINE", MatchAny, MatchAny))
    1593             :     {
    1594           0 :         if (ends_with(prev_wd, ')'))
    1595           0 :             COMPLETE_WITH("OWNER TO", "RENAME TO", "SET SCHEMA");
    1596             :         else
    1597           0 :             COMPLETE_WITH_FUNCTION_ARG(prev2_wd);
    1598             :     }
    1599             :     /* ALTER PUBLICATION <name> */
    1600          22 :     else if (Matches("ALTER", "PUBLICATION", MatchAny))
    1601           0 :         COMPLETE_WITH("ADD TABLE", "DROP TABLE", "OWNER TO", "RENAME TO", "SET");
    1602             :     /* ALTER PUBLICATION <name> SET */
    1603          22 :     else if (Matches("ALTER", "PUBLICATION", MatchAny, "SET"))
    1604           0 :         COMPLETE_WITH("(", "TABLE");
    1605             :     /* ALTER PUBLICATION <name> SET ( */
    1606          22 :     else if (HeadMatches("ALTER", "PUBLICATION", MatchAny) && TailMatches("SET", "("))
    1607           0 :         COMPLETE_WITH("publish");
    1608             :     /* ALTER SUBSCRIPTION <name> */
    1609          22 :     else if (Matches("ALTER", "SUBSCRIPTION", MatchAny))
    1610           0 :         COMPLETE_WITH("CONNECTION", "ENABLE", "DISABLE", "OWNER TO",
    1611             :                       "RENAME TO", "REFRESH PUBLICATION", "SET");
    1612             :     /* ALTER SUBSCRIPTION <name> REFRESH PUBLICATION */
    1613          22 :     else if (HeadMatches("ALTER", "SUBSCRIPTION", MatchAny) &&
    1614           0 :              TailMatches("REFRESH", "PUBLICATION"))
    1615           0 :         COMPLETE_WITH("WITH (");
    1616             :     /* ALTER SUBSCRIPTION <name> REFRESH PUBLICATION WITH ( */
    1617          22 :     else if (HeadMatches("ALTER", "SUBSCRIPTION", MatchAny) &&
    1618           0 :              TailMatches("REFRESH", "PUBLICATION", "WITH", "("))
    1619           0 :         COMPLETE_WITH("copy_data");
    1620             :     /* ALTER SUBSCRIPTION <name> SET */
    1621          22 :     else if (Matches("ALTER", "SUBSCRIPTION", MatchAny, "SET"))
    1622           0 :         COMPLETE_WITH("(", "PUBLICATION");
    1623             :     /* ALTER SUBSCRIPTION <name> SET ( */
    1624          22 :     else if (HeadMatches("ALTER", "SUBSCRIPTION", MatchAny) && TailMatches("SET", "("))
    1625           0 :         COMPLETE_WITH("slot_name", "synchronous_commit");
    1626             :     /* ALTER SUBSCRIPTION <name> SET PUBLICATION */
    1627          22 :     else if (HeadMatches("ALTER", "SUBSCRIPTION", MatchAny) && TailMatches("SET", "PUBLICATION"))
    1628             :     {
    1629             :         /* complete with nothing here as this refers to remote publications */
    1630             :     }
    1631             :     /* ALTER SUBSCRIPTION <name> SET PUBLICATION <name> */
    1632          22 :     else if (HeadMatches("ALTER", "SUBSCRIPTION", MatchAny) &&
    1633           0 :              TailMatches("SET", "PUBLICATION", MatchAny))
    1634           0 :         COMPLETE_WITH("WITH (");
    1635             :     /* ALTER SUBSCRIPTION <name> SET PUBLICATION <name> WITH ( */
    1636          22 :     else if (HeadMatches("ALTER", "SUBSCRIPTION", MatchAny) &&
    1637           0 :              TailMatches("SET", "PUBLICATION", MatchAny, "WITH", "("))
    1638           0 :         COMPLETE_WITH("copy_data", "refresh");
    1639             :     /* ALTER SCHEMA <name> */
    1640          22 :     else if (Matches("ALTER", "SCHEMA", MatchAny))
    1641           0 :         COMPLETE_WITH("OWNER TO", "RENAME TO");
    1642             : 
    1643             :     /* ALTER COLLATION <name> */
    1644          22 :     else if (Matches("ALTER", "COLLATION", MatchAny))
    1645           0 :         COMPLETE_WITH("OWNER TO", "RENAME TO", "SET SCHEMA");
    1646             : 
    1647             :     /* ALTER CONVERSION <name> */
    1648          22 :     else if (Matches("ALTER", "CONVERSION", MatchAny))
    1649           0 :         COMPLETE_WITH("OWNER TO", "RENAME TO", "SET SCHEMA");
    1650             : 
    1651             :     /* ALTER DATABASE <name> */
    1652          22 :     else if (Matches("ALTER", "DATABASE", MatchAny))
    1653           0 :         COMPLETE_WITH("RESET", "SET", "OWNER TO", "RENAME TO",
    1654             :                       "IS_TEMPLATE", "ALLOW_CONNECTIONS",
    1655             :                       "CONNECTION LIMIT");
    1656             : 
    1657             :     /* ALTER DATABASE <name> SET TABLESPACE */
    1658          22 :     else if (Matches("ALTER", "DATABASE", MatchAny, "SET", "TABLESPACE"))
    1659           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_tablespaces);
    1660             : 
    1661             :     /* ALTER EVENT TRIGGER */
    1662          22 :     else if (Matches("ALTER", "EVENT", "TRIGGER"))
    1663           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_event_triggers);
    1664             : 
    1665             :     /* ALTER EVENT TRIGGER <name> */
    1666          22 :     else if (Matches("ALTER", "EVENT", "TRIGGER", MatchAny))
    1667           0 :         COMPLETE_WITH("DISABLE", "ENABLE", "OWNER TO", "RENAME TO");
    1668             : 
    1669             :     /* ALTER EVENT TRIGGER <name> ENABLE */
    1670          22 :     else if (Matches("ALTER", "EVENT", "TRIGGER", MatchAny, "ENABLE"))
    1671           0 :         COMPLETE_WITH("REPLICA", "ALWAYS");
    1672             : 
    1673             :     /* ALTER EXTENSION <name> */
    1674          22 :     else if (Matches("ALTER", "EXTENSION", MatchAny))
    1675           0 :         COMPLETE_WITH("ADD", "DROP", "UPDATE", "SET SCHEMA");
    1676             : 
    1677             :     /* ALTER EXTENSION <name> UPDATE */
    1678          22 :     else if (Matches("ALTER", "EXTENSION", MatchAny, "UPDATE"))
    1679             :     {
    1680           0 :         completion_info_charp = prev2_wd;
    1681           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_available_extension_versions_with_TO);
    1682             :     }
    1683             : 
    1684             :     /* ALTER EXTENSION <name> UPDATE TO */
    1685          22 :     else if (Matches("ALTER", "EXTENSION", MatchAny, "UPDATE", "TO"))
    1686             :     {
    1687           0 :         completion_info_charp = prev3_wd;
    1688           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_available_extension_versions);
    1689             :     }
    1690             : 
    1691             :     /* ALTER FOREIGN */
    1692          22 :     else if (Matches("ALTER", "FOREIGN"))
    1693           0 :         COMPLETE_WITH("DATA WRAPPER", "TABLE");
    1694             : 
    1695             :     /* ALTER FOREIGN DATA WRAPPER <name> */
    1696          22 :     else if (Matches("ALTER", "FOREIGN", "DATA", "WRAPPER", MatchAny))
    1697           0 :         COMPLETE_WITH("HANDLER", "VALIDATOR", "OPTIONS", "OWNER TO", "RENAME TO");
    1698             : 
    1699             :     /* ALTER FOREIGN TABLE <name> */
    1700          22 :     else if (Matches("ALTER", "FOREIGN", "TABLE", MatchAny))
    1701           0 :         COMPLETE_WITH("ADD", "ALTER", "DISABLE TRIGGER", "DROP", "ENABLE",
    1702             :                       "INHERIT", "NO INHERIT", "OPTIONS", "OWNER TO",
    1703             :                       "RENAME", "SET", "VALIDATE CONSTRAINT");
    1704             : 
    1705             :     /* ALTER INDEX */
    1706          22 :     else if (Matches("ALTER", "INDEX"))
    1707           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexes,
    1708             :                                    "UNION SELECT 'ALL IN TABLESPACE'");
    1709             :     /* ALTER INDEX <name> */
    1710          22 :     else if (Matches("ALTER", "INDEX", MatchAny))
    1711           0 :         COMPLETE_WITH("ALTER COLUMN", "OWNER TO", "RENAME TO", "SET",
    1712             :                       "RESET", "ATTACH PARTITION", "DEPENDS", "NO DEPENDS");
    1713          22 :     else if (Matches("ALTER", "INDEX", MatchAny, "ATTACH"))
    1714           0 :         COMPLETE_WITH("PARTITION");
    1715          22 :     else if (Matches("ALTER", "INDEX", MatchAny, "ATTACH", "PARTITION"))
    1716           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexes, NULL);
    1717             :     /* ALTER INDEX <name> ALTER */
    1718          22 :     else if (Matches("ALTER", "INDEX", MatchAny, "ALTER"))
    1719           0 :         COMPLETE_WITH("COLUMN");
    1720             :     /* ALTER INDEX <name> ALTER COLUMN */
    1721          22 :     else if (Matches("ALTER", "INDEX", MatchAny, "ALTER", "COLUMN"))
    1722             :     {
    1723           0 :         completion_info_charp = prev3_wd;
    1724           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_attribute_numbers);
    1725             :     }
    1726             :     /* ALTER INDEX <name> ALTER COLUMN <colnum> */
    1727          22 :     else if (Matches("ALTER", "INDEX", MatchAny, "ALTER", "COLUMN", MatchAny))
    1728           0 :         COMPLETE_WITH("SET STATISTICS");
    1729             :     /* ALTER INDEX <name> ALTER COLUMN <colnum> SET */
    1730          22 :     else if (Matches("ALTER", "INDEX", MatchAny, "ALTER", "COLUMN", MatchAny, "SET"))
    1731           0 :         COMPLETE_WITH("STATISTICS");
    1732             :     /* ALTER INDEX <name> ALTER COLUMN <colnum> SET STATISTICS */
    1733          22 :     else if (Matches("ALTER", "INDEX", MatchAny, "ALTER", "COLUMN", MatchAny, "SET", "STATISTICS"))
    1734             :     {
    1735             :         /* Enforce no completion here, as an integer has to be specified */
    1736             :     }
    1737             :     /* ALTER INDEX <name> SET */
    1738          22 :     else if (Matches("ALTER", "INDEX", MatchAny, "SET"))
    1739           0 :         COMPLETE_WITH("(", "TABLESPACE");
    1740             :     /* ALTER INDEX <name> RESET */
    1741          22 :     else if (Matches("ALTER", "INDEX", MatchAny, "RESET"))
    1742           0 :         COMPLETE_WITH("(");
    1743             :     /* ALTER INDEX <foo> SET|RESET ( */
    1744          22 :     else if (Matches("ALTER", "INDEX", MatchAny, "RESET", "("))
    1745           0 :         COMPLETE_WITH("fillfactor",
    1746             :                       "vacuum_cleanup_index_scale_factor", "deduplicate_items", /* BTREE */
    1747             :                       "fastupdate", "gin_pending_list_limit",   /* GIN */
    1748             :                       "buffering",    /* GiST */
    1749             :                       "pages_per_range", "autosummarize"    /* BRIN */
    1750             :             );
    1751          22 :     else if (Matches("ALTER", "INDEX", MatchAny, "SET", "("))
    1752           0 :         COMPLETE_WITH("fillfactor =",
    1753             :                       "vacuum_cleanup_index_scale_factor =", "deduplicate_items =", /* BTREE */
    1754             :                       "fastupdate =", "gin_pending_list_limit =",   /* GIN */
    1755             :                       "buffering =",  /* GiST */
    1756             :                       "pages_per_range =", "autosummarize ="    /* BRIN */
    1757             :             );
    1758          22 :     else if (Matches("ALTER", "INDEX", MatchAny, "NO", "DEPENDS"))
    1759           0 :         COMPLETE_WITH("ON EXTENSION");
    1760          22 :     else if (Matches("ALTER", "INDEX", MatchAny, "DEPENDS"))
    1761           0 :         COMPLETE_WITH("ON EXTENSION");
    1762             : 
    1763             :     /* ALTER LANGUAGE <name> */
    1764          22 :     else if (Matches("ALTER", "LANGUAGE", MatchAny))
    1765           0 :         COMPLETE_WITH("OWNER TO", "RENAME TO");
    1766             : 
    1767             :     /* ALTER LARGE OBJECT <oid> */
    1768          22 :     else if (Matches("ALTER", "LARGE", "OBJECT", MatchAny))
    1769           0 :         COMPLETE_WITH("OWNER TO");
    1770             : 
    1771             :     /* ALTER MATERIALIZED VIEW */
    1772          22 :     else if (Matches("ALTER", "MATERIALIZED", "VIEW"))
    1773           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_matviews,
    1774             :                                    "UNION SELECT 'ALL IN TABLESPACE'");
    1775             : 
    1776             :     /* ALTER USER,ROLE <name> */
    1777          22 :     else if (Matches("ALTER", "USER|ROLE", MatchAny) &&
    1778           0 :              !TailMatches("USER", "MAPPING"))
    1779           0 :         COMPLETE_WITH("BYPASSRLS", "CONNECTION LIMIT", "CREATEDB", "CREATEROLE",
    1780             :                       "ENCRYPTED PASSWORD", "INHERIT", "LOGIN", "NOBYPASSRLS",
    1781             :                       "NOCREATEDB", "NOCREATEROLE", "NOINHERIT",
    1782             :                       "NOLOGIN", "NOREPLICATION", "NOSUPERUSER", "PASSWORD",
    1783             :                       "RENAME TO", "REPLICATION", "RESET", "SET", "SUPERUSER",
    1784             :                       "VALID UNTIL", "WITH");
    1785             : 
    1786             :     /* ALTER USER,ROLE <name> WITH */
    1787          22 :     else if (Matches("ALTER", "USER|ROLE", MatchAny, "WITH"))
    1788             :         /* Similar to the above, but don't complete "WITH" again. */
    1789           0 :         COMPLETE_WITH("BYPASSRLS", "CONNECTION LIMIT", "CREATEDB", "CREATEROLE",
    1790             :                       "ENCRYPTED PASSWORD", "INHERIT", "LOGIN", "NOBYPASSRLS",
    1791             :                       "NOCREATEDB", "NOCREATEROLE", "NOINHERIT",
    1792             :                       "NOLOGIN", "NOREPLICATION", "NOSUPERUSER", "PASSWORD",
    1793             :                       "RENAME TO", "REPLICATION", "RESET", "SET", "SUPERUSER",
    1794             :                       "VALID UNTIL");
    1795             : 
    1796             :     /* ALTER DEFAULT PRIVILEGES */
    1797          22 :     else if (Matches("ALTER", "DEFAULT", "PRIVILEGES"))
    1798           0 :         COMPLETE_WITH("FOR ROLE", "IN SCHEMA");
    1799             :     /* ALTER DEFAULT PRIVILEGES FOR */
    1800          22 :     else if (Matches("ALTER", "DEFAULT", "PRIVILEGES", "FOR"))
    1801           0 :         COMPLETE_WITH("ROLE");
    1802             :     /* ALTER DEFAULT PRIVILEGES IN */
    1803          22 :     else if (Matches("ALTER", "DEFAULT", "PRIVILEGES", "IN"))
    1804           0 :         COMPLETE_WITH("SCHEMA");
    1805             :     /* ALTER DEFAULT PRIVILEGES FOR ROLE|USER ... */
    1806          22 :     else if (Matches("ALTER", "DEFAULT", "PRIVILEGES", "FOR", "ROLE|USER",
    1807             :                      MatchAny))
    1808           0 :         COMPLETE_WITH("GRANT", "REVOKE", "IN SCHEMA");
    1809             :     /* ALTER DEFAULT PRIVILEGES IN SCHEMA ... */
    1810          22 :     else if (Matches("ALTER", "DEFAULT", "PRIVILEGES", "IN", "SCHEMA",
    1811             :                      MatchAny))
    1812           0 :         COMPLETE_WITH("GRANT", "REVOKE", "FOR ROLE");
    1813             :     /* ALTER DEFAULT PRIVILEGES IN SCHEMA ... FOR */
    1814          22 :     else if (Matches("ALTER", "DEFAULT", "PRIVILEGES", "IN", "SCHEMA",
    1815             :                      MatchAny, "FOR"))
    1816           0 :         COMPLETE_WITH("ROLE");
    1817             :     /* ALTER DEFAULT PRIVILEGES FOR ROLE|USER ... IN SCHEMA ... */
    1818             :     /* ALTER DEFAULT PRIVILEGES IN SCHEMA ... FOR ROLE|USER ... */
    1819          22 :     else if (Matches("ALTER", "DEFAULT", "PRIVILEGES", "FOR", "ROLE|USER",
    1820          22 :                      MatchAny, "IN", "SCHEMA", MatchAny) ||
    1821          22 :              Matches("ALTER", "DEFAULT", "PRIVILEGES", "IN", "SCHEMA",
    1822             :                      MatchAny, "FOR", "ROLE|USER", MatchAny))
    1823           0 :         COMPLETE_WITH("GRANT", "REVOKE");
    1824             :     /* ALTER DOMAIN <name> */
    1825          22 :     else if (Matches("ALTER", "DOMAIN", MatchAny))
    1826           0 :         COMPLETE_WITH("ADD", "DROP", "OWNER TO", "RENAME", "SET",
    1827             :                       "VALIDATE CONSTRAINT");
    1828             :     /* ALTER DOMAIN <sth> DROP */
    1829          22 :     else if (Matches("ALTER", "DOMAIN", MatchAny, "DROP"))
    1830           0 :         COMPLETE_WITH("CONSTRAINT", "DEFAULT", "NOT NULL");
    1831             :     /* ALTER DOMAIN <sth> DROP|RENAME|VALIDATE CONSTRAINT */
    1832          22 :     else if (Matches("ALTER", "DOMAIN", MatchAny, "DROP|RENAME|VALIDATE", "CONSTRAINT"))
    1833             :     {
    1834           0 :         completion_info_charp = prev3_wd;
    1835           0 :         COMPLETE_WITH_QUERY(Query_for_constraint_of_type);
    1836             :     }
    1837             :     /* ALTER DOMAIN <sth> RENAME */
    1838          22 :     else if (Matches("ALTER", "DOMAIN", MatchAny, "RENAME"))
    1839           0 :         COMPLETE_WITH("CONSTRAINT", "TO");
    1840             :     /* ALTER DOMAIN <sth> RENAME CONSTRAINT <sth> */
    1841          22 :     else if (Matches("ALTER", "DOMAIN", MatchAny, "RENAME", "CONSTRAINT", MatchAny))
    1842           0 :         COMPLETE_WITH("TO");
    1843             : 
    1844             :     /* ALTER DOMAIN <sth> SET */
    1845          22 :     else if (Matches("ALTER", "DOMAIN", MatchAny, "SET"))
    1846           0 :         COMPLETE_WITH("DEFAULT", "NOT NULL", "SCHEMA");
    1847             :     /* ALTER SEQUENCE <name> */
    1848          22 :     else if (Matches("ALTER", "SEQUENCE", MatchAny))
    1849           0 :         COMPLETE_WITH("INCREMENT", "MINVALUE", "MAXVALUE", "RESTART", "NO",
    1850             :                       "CACHE", "CYCLE", "SET SCHEMA", "OWNED BY", "OWNER TO",
    1851             :                       "RENAME TO");
    1852             :     /* ALTER SEQUENCE <name> NO */
    1853          22 :     else if (Matches("ALTER", "SEQUENCE", MatchAny, "NO"))
    1854           0 :         COMPLETE_WITH("MINVALUE", "MAXVALUE", "CYCLE");
    1855             :     /* ALTER SERVER <name> */
    1856          22 :     else if (Matches("ALTER", "SERVER", MatchAny))
    1857           0 :         COMPLETE_WITH("VERSION", "OPTIONS", "OWNER TO", "RENAME TO");
    1858             :     /* ALTER SERVER <name> VERSION <version> */
    1859          22 :     else if (Matches("ALTER", "SERVER", MatchAny, "VERSION", MatchAny))
    1860           0 :         COMPLETE_WITH("OPTIONS");
    1861             :     /* ALTER SYSTEM SET, RESET, RESET ALL */
    1862          22 :     else if (Matches("ALTER", "SYSTEM"))
    1863           0 :         COMPLETE_WITH("SET", "RESET");
    1864          22 :     else if (Matches("ALTER", "SYSTEM", "SET|RESET"))
    1865           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_alter_system_set_vars);
    1866          22 :     else if (Matches("ALTER", "SYSTEM", "SET", MatchAny))
    1867           0 :         COMPLETE_WITH("TO");
    1868             :     /* ALTER VIEW <name> */
    1869          22 :     else if (Matches("ALTER", "VIEW", MatchAny))
    1870           0 :         COMPLETE_WITH("ALTER COLUMN", "OWNER TO", "RENAME",
    1871             :                       "SET SCHEMA");
    1872             :     /* ALTER VIEW xxx RENAME */
    1873          22 :     else if (Matches("ALTER", "VIEW", MatchAny, "RENAME"))
    1874           0 :         COMPLETE_WITH_ATTR(prev2_wd, " UNION SELECT 'COLUMN' UNION SELECT 'TO'");
    1875          22 :     else if (Matches("ALTER", "VIEW", MatchAny, "ALTER|RENAME", "COLUMN"))
    1876           0 :         COMPLETE_WITH_ATTR(prev3_wd, "");
    1877             :     /* ALTER VIEW xxx RENAME yyy */
    1878          22 :     else if (Matches("ALTER", "VIEW", MatchAny, "RENAME", MatchAnyExcept("TO")))
    1879           0 :         COMPLETE_WITH("TO");
    1880             :     /* ALTER VIEW xxx RENAME COLUMN yyy */
    1881          22 :     else if (Matches("ALTER", "VIEW", MatchAny, "RENAME", "COLUMN", MatchAnyExcept("TO")))
    1882           0 :         COMPLETE_WITH("TO");
    1883             : 
    1884             :     /* ALTER MATERIALIZED VIEW <name> */
    1885          22 :     else if (Matches("ALTER", "MATERIALIZED", "VIEW", MatchAny))
    1886           0 :         COMPLETE_WITH("ALTER COLUMN", "CLUSTER ON", "DEPENDS ON EXTENSION",
    1887             :                       "OWNER TO", "RENAME", "RESET (", "SET");
    1888             :     /* ALTER MATERIALIZED VIEW xxx RENAME */
    1889          22 :     else if (Matches("ALTER", "MATERIALIZED", "VIEW", MatchAny, "RENAME"))
    1890           0 :         COMPLETE_WITH_ATTR(prev2_wd, " UNION SELECT 'COLUMN' UNION SELECT 'TO'");
    1891          22 :     else if (Matches("ALTER", "MATERIALIZED", "VIEW", MatchAny, "ALTER|RENAME", "COLUMN"))
    1892           0 :         COMPLETE_WITH_ATTR(prev3_wd, "");
    1893             :     /* ALTER MATERIALIZED VIEW xxx RENAME yyy */
    1894          22 :     else if (Matches("ALTER", "MATERIALIZED", "VIEW", MatchAny, "RENAME", MatchAnyExcept("TO")))
    1895           0 :         COMPLETE_WITH("TO");
    1896             :     /* ALTER MATERIALIZED VIEW xxx RENAME COLUMN yyy */
    1897          22 :     else if (Matches("ALTER", "MATERIALIZED", "VIEW", MatchAny, "RENAME", "COLUMN", MatchAnyExcept("TO")))
    1898           0 :         COMPLETE_WITH("TO");
    1899             :     /* ALTER MATERIALIZED VIEW xxx SET */
    1900          22 :     else if (Matches("ALTER", "MATERIALIZED", "VIEW", MatchAny, "SET"))
    1901           0 :         COMPLETE_WITH("(", "SCHEMA", "TABLESPACE", "WITHOUT CLUSTER");
    1902             :     /* ALTER POLICY <name> */
    1903          22 :     else if (Matches("ALTER", "POLICY"))
    1904           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_policies);
    1905             :     /* ALTER POLICY <name> ON */
    1906          22 :     else if (Matches("ALTER", "POLICY", MatchAny))
    1907           0 :         COMPLETE_WITH("ON");
    1908             :     /* ALTER POLICY <name> ON <table> */
    1909          22 :     else if (Matches("ALTER", "POLICY", MatchAny, "ON"))
    1910             :     {
    1911           0 :         completion_info_charp = prev2_wd;
    1912           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_tables_for_policy);
    1913             :     }
    1914             :     /* ALTER POLICY <name> ON <table> - show options */
    1915          22 :     else if (Matches("ALTER", "POLICY", MatchAny, "ON", MatchAny))
    1916           0 :         COMPLETE_WITH("RENAME TO", "TO", "USING (", "WITH CHECK (");
    1917             :     /* ALTER POLICY <name> ON <table> TO <role> */
    1918          22 :     else if (Matches("ALTER", "POLICY", MatchAny, "ON", MatchAny, "TO"))
    1919           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_grant_roles);
    1920             :     /* ALTER POLICY <name> ON <table> USING ( */
    1921          22 :     else if (Matches("ALTER", "POLICY", MatchAny, "ON", MatchAny, "USING"))
    1922           0 :         COMPLETE_WITH("(");
    1923             :     /* ALTER POLICY <name> ON <table> WITH CHECK ( */
    1924          22 :     else if (Matches("ALTER", "POLICY", MatchAny, "ON", MatchAny, "WITH", "CHECK"))
    1925           0 :         COMPLETE_WITH("(");
    1926             : 
    1927             :     /* ALTER RULE <name>, add ON */
    1928          22 :     else if (Matches("ALTER", "RULE", MatchAny))
    1929           0 :         COMPLETE_WITH("ON");
    1930             : 
    1931             :     /* If we have ALTER RULE <name> ON, then add the correct tablename */
    1932          22 :     else if (Matches("ALTER", "RULE", MatchAny, "ON"))
    1933             :     {
    1934           0 :         completion_info_charp = prev2_wd;
    1935           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_tables_for_rule);
    1936             :     }
    1937             : 
    1938             :     /* ALTER RULE <name> ON <name> */
    1939          22 :     else if (Matches("ALTER", "RULE", MatchAny, "ON", MatchAny))
    1940           0 :         COMPLETE_WITH("RENAME TO");
    1941             : 
    1942             :     /* ALTER STATISTICS <name> */
    1943          22 :     else if (Matches("ALTER", "STATISTICS", MatchAny))
    1944           0 :         COMPLETE_WITH("OWNER TO", "RENAME TO", "SET SCHEMA", "SET STATISTICS");
    1945             : 
    1946             :     /* ALTER TRIGGER <name>, add ON */
    1947          22 :     else if (Matches("ALTER", "TRIGGER", MatchAny))
    1948           0 :         COMPLETE_WITH("ON");
    1949             : 
    1950          22 :     else if (Matches("ALTER", "TRIGGER", MatchAny, MatchAny))
    1951             :     {
    1952           0 :         completion_info_charp = prev2_wd;
    1953           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_tables_for_trigger);
    1954             :     }
    1955             : 
    1956             :     /*
    1957             :      * If we have ALTER TRIGGER <sth> ON, then add the correct tablename
    1958             :      */
    1959          22 :     else if (Matches("ALTER", "TRIGGER", MatchAny, "ON"))
    1960           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);
    1961             : 
    1962             :     /* ALTER TRIGGER <name> ON <name> */
    1963          22 :     else if (Matches("ALTER", "TRIGGER", MatchAny, "ON", MatchAny))
    1964           0 :         COMPLETE_WITH("RENAME TO");
    1965             : 
    1966             :     /*
    1967             :      * If we detect ALTER TABLE <name>, suggest sub commands
    1968             :      */
    1969          22 :     else if (Matches("ALTER", "TABLE", MatchAny))
    1970           0 :         COMPLETE_WITH("ADD", "ALTER", "CLUSTER ON", "DISABLE", "DROP",
    1971             :                       "ENABLE", "INHERIT", "NO INHERIT", "RENAME", "RESET",
    1972             :                       "OWNER TO", "SET", "VALIDATE CONSTRAINT",
    1973             :                       "REPLICA IDENTITY", "ATTACH PARTITION",
    1974             :                       "DETACH PARTITION");
    1975             :     /* ALTER TABLE xxx ENABLE */
    1976          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "ENABLE"))
    1977           0 :         COMPLETE_WITH("ALWAYS", "REPLICA", "ROW LEVEL SECURITY", "RULE",
    1978             :                       "TRIGGER");
    1979          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "ENABLE", "REPLICA|ALWAYS"))
    1980           0 :         COMPLETE_WITH("RULE", "TRIGGER");
    1981          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "ENABLE", "RULE"))
    1982             :     {
    1983           0 :         completion_info_charp = prev3_wd;
    1984           0 :         COMPLETE_WITH_QUERY(Query_for_rule_of_table);
    1985             :     }
    1986          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "ENABLE", MatchAny, "RULE"))
    1987             :     {
    1988           0 :         completion_info_charp = prev4_wd;
    1989           0 :         COMPLETE_WITH_QUERY(Query_for_rule_of_table);
    1990             :     }
    1991          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "ENABLE", "TRIGGER"))
    1992             :     {
    1993           0 :         completion_info_charp = prev3_wd;
    1994           0 :         COMPLETE_WITH_QUERY(Query_for_trigger_of_table);
    1995             :     }
    1996          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "ENABLE", MatchAny, "TRIGGER"))
    1997             :     {
    1998           0 :         completion_info_charp = prev4_wd;
    1999           0 :         COMPLETE_WITH_QUERY(Query_for_trigger_of_table);
    2000             :     }
    2001             :     /* ALTER TABLE xxx INHERIT */
    2002          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "INHERIT"))
    2003           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, "");
    2004             :     /* ALTER TABLE xxx NO INHERIT */
    2005          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "NO", "INHERIT"))
    2006           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, "");
    2007             :     /* ALTER TABLE xxx DISABLE */
    2008          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "DISABLE"))
    2009           0 :         COMPLETE_WITH("ROW LEVEL SECURITY", "RULE", "TRIGGER");
    2010          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "DISABLE", "RULE"))
    2011             :     {
    2012           0 :         completion_info_charp = prev3_wd;
    2013           0 :         COMPLETE_WITH_QUERY(Query_for_rule_of_table);
    2014             :     }
    2015          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "DISABLE", "TRIGGER"))
    2016             :     {
    2017           0 :         completion_info_charp = prev3_wd;
    2018           0 :         COMPLETE_WITH_QUERY(Query_for_trigger_of_table);
    2019             :     }
    2020             : 
    2021             :     /* ALTER TABLE xxx ALTER */
    2022          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER"))
    2023           0 :         COMPLETE_WITH_ATTR(prev2_wd, " UNION SELECT 'COLUMN' UNION SELECT 'CONSTRAINT'");
    2024             : 
    2025             :     /* ALTER TABLE xxx RENAME */
    2026          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "RENAME"))
    2027           0 :         COMPLETE_WITH_ATTR(prev2_wd, " UNION SELECT 'COLUMN' UNION SELECT 'CONSTRAINT' UNION SELECT 'TO'");
    2028          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER|RENAME", "COLUMN"))
    2029           0 :         COMPLETE_WITH_ATTR(prev3_wd, "");
    2030             : 
    2031             :     /* ALTER TABLE xxx RENAME yyy */
    2032          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "RENAME", MatchAnyExcept("CONSTRAINT|TO")))
    2033           0 :         COMPLETE_WITH("TO");
    2034             : 
    2035             :     /* ALTER TABLE xxx RENAME COLUMN/CONSTRAINT yyy */
    2036          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "RENAME", "COLUMN|CONSTRAINT", MatchAnyExcept("TO")))
    2037           0 :         COMPLETE_WITH("TO");
    2038             : 
    2039             :     /* If we have ALTER TABLE <sth> DROP, provide COLUMN or CONSTRAINT */
    2040          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "DROP"))
    2041           0 :         COMPLETE_WITH("COLUMN", "CONSTRAINT");
    2042             :     /* If we have ALTER TABLE <sth> DROP COLUMN, provide list of columns */
    2043          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "DROP", "COLUMN"))
    2044           0 :         COMPLETE_WITH_ATTR(prev3_wd, "");
    2045             : 
    2046             :     /*
    2047             :      * If we have ALTER TABLE <sth> ALTER|DROP|RENAME|VALIDATE CONSTRAINT,
    2048             :      * provide list of constraints
    2049             :      */
    2050          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER|DROP|RENAME|VALIDATE", "CONSTRAINT"))
    2051             :     {
    2052           0 :         completion_info_charp = prev3_wd;
    2053           0 :         COMPLETE_WITH_QUERY(Query_for_constraint_of_table);
    2054             :     }
    2055             :     /* ALTER TABLE ALTER [COLUMN] <foo> */
    2056          44 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny) ||
    2057          22 :              Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny))
    2058           0 :         COMPLETE_WITH("TYPE", "SET", "RESET", "RESTART", "ADD", "DROP");
    2059             :     /* ALTER TABLE ALTER [COLUMN] <foo> SET */
    2060          44 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET") ||
    2061          22 :              Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET"))
    2062           0 :         COMPLETE_WITH("(", "DEFAULT", "NOT NULL", "STATISTICS", "STORAGE");
    2063             :     /* ALTER TABLE ALTER [COLUMN] <foo> SET ( */
    2064          44 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET", "(") ||
    2065          22 :              Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET", "("))
    2066           0 :         COMPLETE_WITH("n_distinct", "n_distinct_inherited");
    2067             :     /* ALTER TABLE ALTER [COLUMN] <foo> SET STORAGE */
    2068          44 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET", "STORAGE") ||
    2069          22 :              Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET", "STORAGE"))
    2070           0 :         COMPLETE_WITH("PLAIN", "EXTERNAL", "EXTENDED", "MAIN");
    2071             :     /* ALTER TABLE ALTER [COLUMN] <foo> SET STATISTICS */
    2072          44 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "SET", "STATISTICS") ||
    2073          22 :              Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "SET", "STATISTICS"))
    2074             :     {
    2075             :         /* Enforce no completion here, as an integer has to be specified */
    2076             :     }
    2077             :     /* ALTER TABLE ALTER [COLUMN] <foo> DROP */
    2078          44 :     else if (Matches("ALTER", "TABLE", MatchAny, "ALTER", "COLUMN", MatchAny, "DROP") ||
    2079          22 :              Matches("ALTER", "TABLE", MatchAny, "ALTER", MatchAny, "DROP"))
    2080           0 :         COMPLETE_WITH("DEFAULT", "EXPRESSION", "IDENTITY", "NOT NULL");
    2081          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "CLUSTER"))
    2082           0 :         COMPLETE_WITH("ON");
    2083          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "CLUSTER", "ON"))
    2084             :     {
    2085           0 :         completion_info_charp = prev3_wd;
    2086           0 :         COMPLETE_WITH_QUERY(Query_for_index_of_table);
    2087             :     }
    2088             :     /* If we have ALTER TABLE <sth> SET, provide list of attributes and '(' */
    2089          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "SET"))
    2090           0 :         COMPLETE_WITH("(", "LOGGED", "SCHEMA", "TABLESPACE", "UNLOGGED",
    2091             :                       "WITH", "WITHOUT");
    2092             : 
    2093             :     /*
    2094             :      * If we have ALTER TABLE <sth> SET TABLESPACE provide a list of
    2095             :      * tablespaces
    2096             :      */
    2097          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "SET", "TABLESPACE"))
    2098           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_tablespaces);
    2099             :     /* If we have ALTER TABLE <sth> SET WITHOUT provide CLUSTER or OIDS */
    2100          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "SET", "WITHOUT"))
    2101           0 :         COMPLETE_WITH("CLUSTER", "OIDS");
    2102             :     /* ALTER TABLE <foo> RESET */
    2103          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "RESET"))
    2104           0 :         COMPLETE_WITH("(");
    2105             :     /* ALTER TABLE <foo> SET|RESET ( */
    2106          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "SET|RESET", "("))
    2107           0 :         COMPLETE_WITH_LIST(table_storage_parameters);
    2108          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "REPLICA", "IDENTITY", "USING", "INDEX"))
    2109             :     {
    2110           0 :         completion_info_charp = prev5_wd;
    2111           0 :         COMPLETE_WITH_QUERY(Query_for_index_of_table);
    2112             :     }
    2113          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "REPLICA", "IDENTITY", "USING"))
    2114           0 :         COMPLETE_WITH("INDEX");
    2115          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "REPLICA", "IDENTITY"))
    2116           0 :         COMPLETE_WITH("FULL", "NOTHING", "DEFAULT", "USING");
    2117          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "REPLICA"))
    2118           0 :         COMPLETE_WITH("IDENTITY");
    2119             : 
    2120             :     /*
    2121             :      * If we have ALTER TABLE <foo> ATTACH PARTITION, provide a list of
    2122             :      * tables.
    2123             :      */
    2124          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "ATTACH", "PARTITION"))
    2125           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, "");
    2126             :     /* Limited completion support for partition bound specification */
    2127          22 :     else if (TailMatches("ATTACH", "PARTITION", MatchAny))
    2128           0 :         COMPLETE_WITH("FOR VALUES", "DEFAULT");
    2129          22 :     else if (TailMatches("FOR", "VALUES"))
    2130           0 :         COMPLETE_WITH("FROM (", "IN (", "WITH (");
    2131             : 
    2132             :     /*
    2133             :      * If we have ALTER TABLE <foo> DETACH PARTITION, provide a list of
    2134             :      * partitions of <foo>.
    2135             :      */
    2136          22 :     else if (Matches("ALTER", "TABLE", MatchAny, "DETACH", "PARTITION"))
    2137             :     {
    2138           0 :         completion_info_charp = prev3_wd;
    2139           0 :         COMPLETE_WITH_QUERY(Query_for_partition_of_table);
    2140             :     }
    2141             : 
    2142             :     /* ALTER TABLESPACE <foo> with RENAME TO, OWNER TO, SET, RESET */
    2143          22 :     else if (Matches("ALTER", "TABLESPACE", MatchAny))
    2144           0 :         COMPLETE_WITH("RENAME TO", "OWNER TO", "SET", "RESET");
    2145             :     /* ALTER TABLESPACE <foo> SET|RESET */
    2146          22 :     else if (Matches("ALTER", "TABLESPACE", MatchAny, "SET|RESET"))
    2147           0 :         COMPLETE_WITH("(");
    2148             :     /* ALTER TABLESPACE <foo> SET|RESET ( */
    2149          22 :     else if (Matches("ALTER", "TABLESPACE", MatchAny, "SET|RESET", "("))
    2150           0 :         COMPLETE_WITH("seq_page_cost", "random_page_cost",
    2151             :                       "effective_io_concurrency", "maintenance_io_concurrency");
    2152             : 
    2153             :     /* ALTER TEXT SEARCH */
    2154          22 :     else if (Matches("ALTER", "TEXT", "SEARCH"))
    2155           0 :         COMPLETE_WITH("CONFIGURATION", "DICTIONARY", "PARSER", "TEMPLATE");
    2156          22 :     else if (Matches("ALTER", "TEXT", "SEARCH", "TEMPLATE|PARSER", MatchAny))
    2157           0 :         COMPLETE_WITH("RENAME TO", "SET SCHEMA");
    2158          22 :     else if (Matches("ALTER", "TEXT", "SEARCH", "DICTIONARY", MatchAny))
    2159           0 :         COMPLETE_WITH("(", "OWNER TO", "RENAME TO", "SET SCHEMA");
    2160          22 :     else if (Matches("ALTER", "TEXT", "SEARCH", "CONFIGURATION", MatchAny))
    2161           0 :         COMPLETE_WITH("ADD MAPPING FOR", "ALTER MAPPING",
    2162             :                       "DROP MAPPING FOR",
    2163             :                       "OWNER TO", "RENAME TO", "SET SCHEMA");
    2164             : 
    2165             :     /* complete ALTER TYPE <foo> with actions */
    2166          22 :     else if (Matches("ALTER", "TYPE", MatchAny))
    2167           0 :         COMPLETE_WITH("ADD ATTRIBUTE", "ADD VALUE", "ALTER ATTRIBUTE",
    2168             :                       "DROP ATTRIBUTE",
    2169             :                       "OWNER TO", "RENAME", "SET SCHEMA", "SET (");
    2170             :     /* complete ALTER TYPE <foo> ADD with actions */
    2171          22 :     else if (Matches("ALTER", "TYPE", MatchAny, "ADD"))
    2172           0 :         COMPLETE_WITH("ATTRIBUTE", "VALUE");
    2173             :     /* ALTER TYPE <foo> RENAME    */
    2174          22 :     else if (Matches("ALTER", "TYPE", MatchAny, "RENAME"))
    2175           0 :         COMPLETE_WITH("ATTRIBUTE", "TO", "VALUE");
    2176             :     /* ALTER TYPE xxx RENAME (ATTRIBUTE|VALUE) yyy */
    2177          22 :     else if (Matches("ALTER", "TYPE", MatchAny, "RENAME", "ATTRIBUTE|VALUE", MatchAny))
    2178           0 :         COMPLETE_WITH("TO");
    2179             : 
    2180             :     /*
    2181             :      * If we have ALTER TYPE <sth> ALTER/DROP/RENAME ATTRIBUTE, provide list
    2182             :      * of attributes
    2183             :      */
    2184          22 :     else if (Matches("ALTER", "TYPE", MatchAny, "ALTER|DROP|RENAME", "ATTRIBUTE"))
    2185           0 :         COMPLETE_WITH_ATTR(prev3_wd, "");
    2186             :     /* ALTER TYPE ALTER ATTRIBUTE <foo> */
    2187          22 :     else if (Matches("ALTER", "TYPE", MatchAny, "ALTER", "ATTRIBUTE", MatchAny))
    2188           0 :         COMPLETE_WITH("TYPE");
    2189             :     /* complete ALTER GROUP <foo> */
    2190          22 :     else if (Matches("ALTER", "GROUP", MatchAny))
    2191           0 :         COMPLETE_WITH("ADD USER", "DROP USER", "RENAME TO");
    2192             :     /* complete ALTER GROUP <foo> ADD|DROP with USER */
    2193          22 :     else if (Matches("ALTER", "GROUP", MatchAny, "ADD|DROP"))
    2194           0 :         COMPLETE_WITH("USER");
    2195             :     /* complete ALTER GROUP <foo> ADD|DROP USER with a user name */
    2196          22 :     else if (Matches("ALTER", "GROUP", MatchAny, "ADD|DROP", "USER"))
    2197           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_roles);
    2198             : 
    2199             :     /*
    2200             :      * If we have ALTER TYPE <sth> RENAME VALUE, provide list of enum values
    2201             :      */
    2202          22 :     else if (Matches("ALTER", "TYPE", MatchAny, "RENAME", "VALUE"))
    2203           0 :         COMPLETE_WITH_ENUM_VALUE(prev3_wd);
    2204             : 
    2205             : /*
    2206             :  * ANALYZE [ ( option [, ...] ) ] [ table_and_columns [, ...] ]
    2207             :  * ANALYZE [ VERBOSE ] [ table_and_columns [, ...] ]
    2208             :  */
    2209          22 :     else if (Matches("ANALYZE"))
    2210           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_analyzables,
    2211             :                                    " UNION SELECT 'VERBOSE'");
    2212          22 :     else if (HeadMatches("ANALYZE", "(*") &&
    2213           0 :              !HeadMatches("ANALYZE", "(*)"))
    2214             :     {
    2215             :         /*
    2216             :          * This fires if we're in an unfinished parenthesized option list.
    2217             :          * get_previous_words treats a completed parenthesized option list as
    2218             :          * one word, so the above test is correct.
    2219             :          */
    2220           0 :         if (ends_with(prev_wd, '(') || ends_with(prev_wd, ','))
    2221           0 :             COMPLETE_WITH("VERBOSE", "SKIP_LOCKED");
    2222           0 :         else if (TailMatches("VERBOSE|SKIP_LOCKED"))
    2223           0 :             COMPLETE_WITH("ON", "OFF");
    2224             :     }
    2225          22 :     else if (HeadMatches("ANALYZE") && TailMatches("("))
    2226             :         /* "ANALYZE (" should be caught above, so assume we want columns */
    2227           0 :         COMPLETE_WITH_ATTR(prev2_wd, "");
    2228          22 :     else if (HeadMatches("ANALYZE"))
    2229           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_analyzables, NULL);
    2230             : 
    2231             : /* BEGIN */
    2232          22 :     else if (Matches("BEGIN"))
    2233           0 :         COMPLETE_WITH("WORK", "TRANSACTION", "ISOLATION LEVEL", "READ", "DEFERRABLE", "NOT DEFERRABLE");
    2234             : /* END, ABORT */
    2235          22 :     else if (Matches("END|ABORT"))
    2236           0 :         COMPLETE_WITH("AND", "WORK", "TRANSACTION");
    2237             : /* COMMIT */
    2238          22 :     else if (Matches("COMMIT"))
    2239           0 :         COMPLETE_WITH("AND", "WORK", "TRANSACTION", "PREPARED");
    2240             : /* RELEASE SAVEPOINT */
    2241          22 :     else if (Matches("RELEASE"))
    2242           0 :         COMPLETE_WITH("SAVEPOINT");
    2243             : /* ROLLBACK */
    2244          22 :     else if (Matches("ROLLBACK"))
    2245           0 :         COMPLETE_WITH("AND", "WORK", "TRANSACTION", "TO SAVEPOINT", "PREPARED");
    2246          22 :     else if (Matches("ABORT|END|COMMIT|ROLLBACK", "AND"))
    2247           0 :         COMPLETE_WITH("CHAIN");
    2248             : /* CALL */
    2249          22 :     else if (Matches("CALL"))
    2250           0 :         COMPLETE_WITH_VERSIONED_SCHEMA_QUERY(Query_for_list_of_procedures, NULL);
    2251          22 :     else if (Matches("CALL", MatchAny))
    2252           0 :         COMPLETE_WITH("(");
    2253             : /* CLUSTER */
    2254          22 :     else if (Matches("CLUSTER"))
    2255           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_clusterables, "UNION SELECT 'VERBOSE'");
    2256          22 :     else if (Matches("CLUSTER", "VERBOSE"))
    2257           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_clusterables, NULL);
    2258             :     /* If we have CLUSTER <sth>, then add "USING" */
    2259          22 :     else if (Matches("CLUSTER", MatchAnyExcept("VERBOSE|ON")))
    2260           0 :         COMPLETE_WITH("USING");
    2261             :     /* If we have CLUSTER VERBOSE <sth>, then add "USING" */
    2262          22 :     else if (Matches("CLUSTER", "VERBOSE", MatchAny))
    2263           0 :         COMPLETE_WITH("USING");
    2264             :     /* If we have CLUSTER <sth> USING, then add the index as well */
    2265          44 :     else if (Matches("CLUSTER", MatchAny, "USING") ||
    2266          22 :              Matches("CLUSTER", "VERBOSE", MatchAny, "USING"))
    2267             :     {
    2268           0 :         completion_info_charp = prev2_wd;
    2269           0 :         COMPLETE_WITH_QUERY(Query_for_index_of_table);
    2270             :     }
    2271             : 
    2272             : /* COMMENT */
    2273          22 :     else if (Matches("COMMENT"))
    2274           0 :         COMPLETE_WITH("ON");
    2275          22 :     else if (Matches("COMMENT", "ON"))
    2276           0 :         COMPLETE_WITH("ACCESS METHOD", "CAST", "COLLATION", "CONVERSION",
    2277             :                       "DATABASE", "EVENT TRIGGER", "EXTENSION",
    2278             :                       "FOREIGN DATA WRAPPER", "FOREIGN TABLE", "SERVER",
    2279             :                       "INDEX", "LANGUAGE", "POLICY", "PUBLICATION", "RULE",
    2280             :                       "SCHEMA", "SEQUENCE", "STATISTICS", "SUBSCRIPTION",
    2281             :                       "TABLE", "TYPE", "VIEW", "MATERIALIZED VIEW",
    2282             :                       "COLUMN", "AGGREGATE", "FUNCTION",
    2283             :                       "PROCEDURE", "ROUTINE",
    2284             :                       "OPERATOR", "TRIGGER", "CONSTRAINT", "DOMAIN",
    2285             :                       "LARGE OBJECT", "TABLESPACE", "TEXT SEARCH", "ROLE");
    2286          22 :     else if (Matches("COMMENT", "ON", "ACCESS", "METHOD"))
    2287           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_access_methods);
    2288          22 :     else if (Matches("COMMENT", "ON", "FOREIGN"))
    2289           0 :         COMPLETE_WITH("DATA WRAPPER", "TABLE");
    2290          22 :     else if (Matches("COMMENT", "ON", "TEXT", "SEARCH"))
    2291           0 :         COMPLETE_WITH("CONFIGURATION", "DICTIONARY", "PARSER", "TEMPLATE");
    2292          22 :     else if (Matches("COMMENT", "ON", "CONSTRAINT"))
    2293           0 :         COMPLETE_WITH_QUERY(Query_for_all_table_constraints);
    2294          22 :     else if (Matches("COMMENT", "ON", "CONSTRAINT", MatchAny))
    2295           0 :         COMPLETE_WITH("ON");
    2296          22 :     else if (Matches("COMMENT", "ON", "CONSTRAINT", MatchAny, "ON"))
    2297             :     {
    2298           0 :         completion_info_charp = prev2_wd;
    2299           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_tables_for_constraint);
    2300             :     }
    2301          22 :     else if (Matches("COMMENT", "ON", "MATERIALIZED", "VIEW"))
    2302           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_matviews, NULL);
    2303          22 :     else if (Matches("COMMENT", "ON", "EVENT", "TRIGGER"))
    2304           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_event_triggers);
    2305          44 :     else if (Matches("COMMENT", "ON", MatchAny, MatchAnyExcept("IS")) ||
    2306          44 :              Matches("COMMENT", "ON", MatchAny, MatchAny, MatchAnyExcept("IS")) ||
    2307          22 :              Matches("COMMENT", "ON", MatchAny, MatchAny, MatchAny, MatchAnyExcept("IS")))
    2308           0 :         COMPLETE_WITH("IS");
    2309             : 
    2310             : /* COPY */
    2311             : 
    2312             :     /*
    2313             :      * If we have COPY, offer list of tables or "(" (Also cover the analogous
    2314             :      * backslash command).
    2315             :      */
    2316          22 :     else if (Matches("COPY|\\copy"))
    2317           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables,
    2318             :                                    " UNION ALL SELECT '('");
    2319             :     /* If we have COPY BINARY, complete with list of tables */
    2320          22 :     else if (Matches("COPY", "BINARY"))
    2321           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);
    2322             :     /* If we have COPY (, complete it with legal commands */
    2323          22 :     else if (Matches("COPY|\\copy", "("))
    2324           0 :         COMPLETE_WITH("SELECT", "TABLE", "VALUES", "INSERT", "UPDATE", "DELETE", "WITH");
    2325             :     /* If we have COPY [BINARY] <sth>, complete it with "TO" or "FROM" */
    2326          44 :     else if (Matches("COPY|\\copy", MatchAny) ||
    2327          22 :              Matches("COPY", "BINARY", MatchAny))
    2328           0 :         COMPLETE_WITH("FROM", "TO");
    2329             :     /* If we have COPY [BINARY] <sth> FROM|TO, complete with filename */
    2330          36 :     else if (Matches("COPY", MatchAny, "FROM|TO") ||
    2331          14 :              Matches("COPY", "BINARY", MatchAny, "FROM|TO"))
    2332             :     {
    2333           8 :         completion_charp = "";
    2334           8 :         completion_force_quote = true;  /* COPY requires quoted filename */
    2335           8 :         matches = rl_completion_matches(text, complete_from_files);
    2336             :     }
    2337          14 :     else if (Matches("\\copy", MatchAny, "FROM|TO"))
    2338             :     {
    2339           0 :         completion_charp = "";
    2340           0 :         completion_force_quote = false;
    2341           0 :         matches = rl_completion_matches(text, complete_from_files);
    2342             :     }
    2343             :     /* Offer options after COPY [BINARY] <sth> FROM|TO filename */
    2344          28 :     else if (Matches("COPY|\\copy", MatchAny, "FROM|TO", MatchAny) ||
    2345          14 :              Matches("COPY", "BINARY", MatchAny, "FROM|TO", MatchAny))
    2346           0 :         COMPLETE_WITH("BINARY", "DELIMITER", "NULL", "CSV",
    2347             :                       "ENCODING");
    2348             : 
    2349             :     /* Offer options after COPY [BINARY] <sth> FROM|TO filename CSV */
    2350          28 :     else if (Matches("COPY|\\copy", MatchAny, "FROM|TO", MatchAny, "CSV") ||
    2351          14 :              Matches("COPY", "BINARY", MatchAny, "FROM|TO", MatchAny, "CSV"))
    2352           0 :         COMPLETE_WITH("HEADER", "QUOTE", "ESCAPE", "FORCE QUOTE",
    2353             :                       "FORCE NOT NULL");
    2354             : 
    2355             :     /* CREATE ACCESS METHOD */
    2356             :     /* Complete "CREATE ACCESS METHOD <name>" */
    2357          14 :     else if (Matches("CREATE", "ACCESS", "METHOD", MatchAny))
    2358           0 :         COMPLETE_WITH("TYPE");
    2359             :     /* Complete "CREATE ACCESS METHOD <name> TYPE" */
    2360          14 :     else if (Matches("CREATE", "ACCESS", "METHOD", MatchAny, "TYPE"))
    2361           0 :         COMPLETE_WITH("INDEX", "TABLE");
    2362             :     /* Complete "CREATE ACCESS METHOD <name> TYPE <type>" */
    2363          14 :     else if (Matches("CREATE", "ACCESS", "METHOD", MatchAny, "TYPE", MatchAny))
    2364           0 :         COMPLETE_WITH("HANDLER");
    2365             : 
    2366             :     /* CREATE DATABASE */
    2367          14 :     else if (Matches("CREATE", "DATABASE", MatchAny))
    2368           0 :         COMPLETE_WITH("OWNER", "TEMPLATE", "ENCODING", "TABLESPACE",
    2369             :                       "IS_TEMPLATE",
    2370             :                       "ALLOW_CONNECTIONS", "CONNECTION LIMIT",
    2371             :                       "LC_COLLATE", "LC_CTYPE");
    2372             : 
    2373          14 :     else if (Matches("CREATE", "DATABASE", MatchAny, "TEMPLATE"))
    2374           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_template_databases);
    2375             : 
    2376             :     /* CREATE EXTENSION */
    2377             :     /* Complete with available extensions rather than installed ones. */
    2378          14 :     else if (Matches("CREATE", "EXTENSION"))
    2379           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_available_extensions);
    2380             :     /* CREATE EXTENSION <name> */
    2381          14 :     else if (Matches("CREATE", "EXTENSION", MatchAny))
    2382           0 :         COMPLETE_WITH("WITH SCHEMA", "CASCADE", "VERSION");
    2383             :     /* CREATE EXTENSION <name> VERSION */
    2384          14 :     else if (Matches("CREATE", "EXTENSION", MatchAny, "VERSION"))
    2385             :     {
    2386           0 :         completion_info_charp = prev2_wd;
    2387           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_available_extension_versions);
    2388             :     }
    2389             : 
    2390             :     /* CREATE FOREIGN */
    2391          14 :     else if (Matches("CREATE", "FOREIGN"))
    2392           0 :         COMPLETE_WITH("DATA WRAPPER", "TABLE");
    2393             : 
    2394             :     /* CREATE FOREIGN DATA WRAPPER */
    2395          14 :     else if (Matches("CREATE", "FOREIGN", "DATA", "WRAPPER", MatchAny))
    2396           0 :         COMPLETE_WITH("HANDLER", "VALIDATOR", "OPTIONS");
    2397             : 
    2398             :     /* CREATE INDEX --- is allowed inside CREATE SCHEMA, so use TailMatches */
    2399             :     /* First off we complete CREATE UNIQUE with "INDEX" */
    2400          14 :     else if (TailMatches("CREATE", "UNIQUE"))
    2401           0 :         COMPLETE_WITH("INDEX");
    2402             : 
    2403             :     /*
    2404             :      * If we have CREATE|UNIQUE INDEX, then add "ON", "CONCURRENTLY", and
    2405             :      * existing indexes
    2406             :      */
    2407          14 :     else if (TailMatches("CREATE|UNIQUE", "INDEX"))
    2408           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexes,
    2409             :                                    " UNION SELECT 'ON'"
    2410             :                                    " UNION SELECT 'CONCURRENTLY'");
    2411             : 
    2412             :     /*
    2413             :      * Complete ... INDEX|CONCURRENTLY [<name>] ON with a list of relations
    2414             :      * that indexes can be created on
    2415             :      */
    2416          28 :     else if (TailMatches("INDEX|CONCURRENTLY", MatchAny, "ON") ||
    2417          14 :              TailMatches("INDEX|CONCURRENTLY", "ON"))
    2418           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexables, NULL);
    2419             : 
    2420             :     /*
    2421             :      * Complete CREATE|UNIQUE INDEX CONCURRENTLY with "ON" and existing
    2422             :      * indexes
    2423             :      */
    2424          14 :     else if (TailMatches("CREATE|UNIQUE", "INDEX", "CONCURRENTLY"))
    2425           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexes,
    2426             :                                    " UNION SELECT 'ON'");
    2427             :     /* Complete CREATE|UNIQUE INDEX [CONCURRENTLY] <sth> with "ON" */
    2428          28 :     else if (TailMatches("CREATE|UNIQUE", "INDEX", MatchAny) ||
    2429          14 :              TailMatches("CREATE|UNIQUE", "INDEX", "CONCURRENTLY", MatchAny))
    2430           0 :         COMPLETE_WITH("ON");
    2431             : 
    2432             :     /*
    2433             :      * Complete INDEX <name> ON <table> with a list of table columns (which
    2434             :      * should really be in parens)
    2435             :      */
    2436          28 :     else if (TailMatches("INDEX", MatchAny, "ON", MatchAny) ||
    2437          14 :              TailMatches("INDEX|CONCURRENTLY", "ON", MatchAny))
    2438           0 :         COMPLETE_WITH("(", "USING");
    2439          28 :     else if (TailMatches("INDEX", MatchAny, "ON", MatchAny, "(") ||
    2440          14 :              TailMatches("INDEX|CONCURRENTLY", "ON", MatchAny, "("))
    2441           0 :         COMPLETE_WITH_ATTR(prev2_wd, "");
    2442             :     /* same if you put in USING */
    2443          14 :     else if (TailMatches("ON", MatchAny, "USING", MatchAny, "("))
    2444           0 :         COMPLETE_WITH_ATTR(prev4_wd, "");
    2445             :     /* Complete USING with an index method */
    2446          28 :     else if (TailMatches("INDEX", MatchAny, MatchAny, "ON", MatchAny, "USING") ||
    2447          28 :              TailMatches("INDEX", MatchAny, "ON", MatchAny, "USING") ||
    2448          14 :              TailMatches("INDEX", "ON", MatchAny, "USING"))
    2449           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_index_access_methods);
    2450          14 :     else if (TailMatches("ON", MatchAny, "USING", MatchAny) &&
    2451           0 :              !TailMatches("POLICY", MatchAny, MatchAny, MatchAny, MatchAny, MatchAny) &&
    2452           0 :              !TailMatches("FOR", MatchAny, MatchAny, MatchAny))
    2453           0 :         COMPLETE_WITH("(");
    2454             : 
    2455             :     /* CREATE OR REPLACE */
    2456          14 :     else if (Matches("CREATE", "OR"))
    2457           0 :         COMPLETE_WITH("REPLACE");
    2458             : 
    2459             :     /* CREATE POLICY */
    2460             :     /* Complete "CREATE POLICY <name> ON" */
    2461          14 :     else if (Matches("CREATE", "POLICY", MatchAny))
    2462           0 :         COMPLETE_WITH("ON");
    2463             :     /* Complete "CREATE POLICY <name> ON <table>" */
    2464          14 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON"))
    2465           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);
    2466             :     /* Complete "CREATE POLICY <name> ON <table> AS|FOR|TO|USING|WITH CHECK" */
    2467          14 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny))
    2468           0 :         COMPLETE_WITH("AS", "FOR", "TO", "USING (", "WITH CHECK (");
    2469             :     /* CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE */
    2470          14 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS"))
    2471           0 :         COMPLETE_WITH("PERMISSIVE", "RESTRICTIVE");
    2472             : 
    2473             :     /*
    2474             :      * CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE
    2475             :      * FOR|TO|USING|WITH CHECK
    2476             :      */
    2477          14 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny))
    2478           0 :         COMPLETE_WITH("FOR", "TO", "USING", "WITH CHECK");
    2479             :     /* CREATE POLICY <name> ON <table> FOR ALL|SELECT|INSERT|UPDATE|DELETE */
    2480          14 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "FOR"))
    2481           0 :         COMPLETE_WITH("ALL", "SELECT", "INSERT", "UPDATE", "DELETE");
    2482             :     /* Complete "CREATE POLICY <name> ON <table> FOR INSERT TO|WITH CHECK" */
    2483          14 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "FOR", "INSERT"))
    2484           0 :         COMPLETE_WITH("TO", "WITH CHECK (");
    2485             :     /* Complete "CREATE POLICY <name> ON <table> FOR SELECT|DELETE TO|USING" */
    2486          14 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "FOR", "SELECT|DELETE"))
    2487           0 :         COMPLETE_WITH("TO", "USING (");
    2488             :     /* CREATE POLICY <name> ON <table> FOR ALL|UPDATE TO|USING|WITH CHECK */
    2489          14 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "FOR", "ALL|UPDATE"))
    2490           0 :         COMPLETE_WITH("TO", "USING (", "WITH CHECK (");
    2491             :     /* Complete "CREATE POLICY <name> ON <table> TO <role>" */
    2492          14 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "TO"))
    2493           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_grant_roles);
    2494             :     /* Complete "CREATE POLICY <name> ON <table> USING (" */
    2495          14 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "USING"))
    2496           0 :         COMPLETE_WITH("(");
    2497             : 
    2498             :     /*
    2499             :      * CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE FOR
    2500             :      * ALL|SELECT|INSERT|UPDATE|DELETE
    2501             :      */
    2502          14 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "FOR"))
    2503           0 :         COMPLETE_WITH("ALL", "SELECT", "INSERT", "UPDATE", "DELETE");
    2504             : 
    2505             :     /*
    2506             :      * Complete "CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE FOR
    2507             :      * INSERT TO|WITH CHECK"
    2508             :      */
    2509          14 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "FOR", "INSERT"))
    2510           0 :         COMPLETE_WITH("TO", "WITH CHECK (");
    2511             : 
    2512             :     /*
    2513             :      * Complete "CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE FOR
    2514             :      * SELECT|DELETE TO|USING"
    2515             :      */
    2516          14 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "FOR", "SELECT|DELETE"))
    2517           0 :         COMPLETE_WITH("TO", "USING (");
    2518             : 
    2519             :     /*
    2520             :      * CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE FOR
    2521             :      * ALL|UPDATE TO|USING|WITH CHECK
    2522             :      */
    2523          14 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "FOR", "ALL|UPDATE"))
    2524           0 :         COMPLETE_WITH("TO", "USING (", "WITH CHECK (");
    2525             : 
    2526             :     /*
    2527             :      * Complete "CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE TO
    2528             :      * <role>"
    2529             :      */
    2530          14 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "TO"))
    2531           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_grant_roles);
    2532             : 
    2533             :     /*
    2534             :      * Complete "CREATE POLICY <name> ON <table> AS PERMISSIVE|RESTRICTIVE
    2535             :      * USING ("
    2536             :      */
    2537          14 :     else if (Matches("CREATE", "POLICY", MatchAny, "ON", MatchAny, "AS", MatchAny, "USING"))
    2538           0 :         COMPLETE_WITH("(");
    2539             : 
    2540             : 
    2541             : /* CREATE PUBLICATION */
    2542          14 :     else if (Matches("CREATE", "PUBLICATION", MatchAny))
    2543           0 :         COMPLETE_WITH("FOR TABLE", "FOR ALL TABLES", "WITH (");
    2544          14 :     else if (Matches("CREATE", "PUBLICATION", MatchAny, "FOR"))
    2545           0 :         COMPLETE_WITH("TABLE", "ALL TABLES");
    2546             :     /* Complete "CREATE PUBLICATION <name> FOR TABLE <table>, ..." */
    2547          14 :     else if (HeadMatches("CREATE", "PUBLICATION", MatchAny, "FOR", "TABLE"))
    2548           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);
    2549             :     /* Complete "CREATE PUBLICATION <name> [...] WITH" */
    2550          14 :     else if (HeadMatches("CREATE", "PUBLICATION") && TailMatches("WITH", "("))
    2551           0 :         COMPLETE_WITH("publish");
    2552             : 
    2553             : /* CREATE RULE */
    2554             :     /* Complete "CREATE [ OR REPLACE ] RULE <sth>" with "AS ON" */
    2555          28 :     else if (Matches("CREATE", "RULE", MatchAny) ||
    2556          14 :              Matches("CREATE", "OR", "REPLACE", "RULE", MatchAny))
    2557           0 :         COMPLETE_WITH("AS ON");
    2558             :     /* Complete "CREATE [ OR REPLACE ] RULE <sth> AS" with "ON" */
    2559          28 :     else if (Matches("CREATE", "RULE", MatchAny, "AS") ||
    2560          14 :              Matches("CREATE", "OR", "REPLACE", "RULE", MatchAny, "AS"))
    2561           0 :         COMPLETE_WITH("ON");
    2562             : 
    2563             :     /*
    2564             :      * Complete "CREATE [ OR REPLACE ] RULE <sth> AS ON" with
    2565             :      * SELECT|UPDATE|INSERT|DELETE
    2566             :      */
    2567          28 :     else if (Matches("CREATE", "RULE", MatchAny, "AS", "ON") ||
    2568          14 :              Matches("CREATE", "OR", "REPLACE", "RULE", MatchAny, "AS", "ON"))
    2569           0 :         COMPLETE_WITH("SELECT", "UPDATE", "INSERT", "DELETE");
    2570             :     /* Complete "AS ON SELECT|UPDATE|INSERT|DELETE" with a "TO" */
    2571          14 :     else if (TailMatches("AS", "ON", "SELECT|UPDATE|INSERT|DELETE"))
    2572           0 :         COMPLETE_WITH("TO");
    2573             :     /* Complete "AS ON <sth> TO" with a table name */
    2574          14 :     else if (TailMatches("AS", "ON", "SELECT|UPDATE|INSERT|DELETE", "TO"))
    2575           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);
    2576             : 
    2577             : /* CREATE SEQUENCE --- is allowed inside CREATE SCHEMA, so use TailMatches */
    2578          28 :     else if (TailMatches("CREATE", "SEQUENCE", MatchAny) ||
    2579          14 :              TailMatches("CREATE", "TEMP|TEMPORARY", "SEQUENCE", MatchAny))
    2580           0 :         COMPLETE_WITH("INCREMENT BY", "MINVALUE", "MAXVALUE", "NO", "CACHE",
    2581             :                       "CYCLE", "OWNED BY", "START WITH");
    2582          28 :     else if (TailMatches("CREATE", "SEQUENCE", MatchAny, "NO") ||
    2583          14 :              TailMatches("CREATE", "TEMP|TEMPORARY", "SEQUENCE", MatchAny, "NO"))
    2584           0 :         COMPLETE_WITH("MINVALUE", "MAXVALUE", "CYCLE");
    2585             : 
    2586             : /* CREATE SERVER <name> */
    2587          14 :     else if (Matches("CREATE", "SERVER", MatchAny))
    2588           0 :         COMPLETE_WITH("TYPE", "VERSION", "FOREIGN DATA WRAPPER");
    2589             : 
    2590             : /* CREATE STATISTICS <name> */
    2591          14 :     else if (Matches("CREATE", "STATISTICS", MatchAny))
    2592           0 :         COMPLETE_WITH("(", "ON");
    2593          14 :     else if (Matches("CREATE", "STATISTICS", MatchAny, "("))
    2594           0 :         COMPLETE_WITH("ndistinct", "dependencies", "mcv");
    2595          14 :     else if (Matches("CREATE", "STATISTICS", MatchAny, "(*)"))
    2596           0 :         COMPLETE_WITH("ON");
    2597          14 :     else if (HeadMatches("CREATE", "STATISTICS", MatchAny) &&
    2598           0 :              TailMatches("FROM"))
    2599           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);
    2600             : 
    2601             : /* CREATE TABLE --- is allowed inside CREATE SCHEMA, so use TailMatches */
    2602             :     /* Complete "CREATE TEMP/TEMPORARY" with the possible temp objects */
    2603          14 :     else if (TailMatches("CREATE", "TEMP|TEMPORARY"))
    2604           0 :         COMPLETE_WITH("SEQUENCE", "TABLE", "VIEW");
    2605             :     /* Complete "CREATE UNLOGGED" with TABLE or MATVIEW */
    2606          14 :     else if (TailMatches("CREATE", "UNLOGGED"))
    2607           0 :         COMPLETE_WITH("TABLE", "MATERIALIZED VIEW");
    2608             :     /* Complete PARTITION BY with RANGE ( or LIST ( or ... */
    2609          14 :     else if (TailMatches("PARTITION", "BY"))
    2610           0 :         COMPLETE_WITH("RANGE (", "LIST (", "HASH (");
    2611             :     /* If we have xxx PARTITION OF, provide a list of partitioned tables */
    2612          14 :     else if (TailMatches("PARTITION", "OF"))
    2613           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_partitioned_tables, "");
    2614             :     /* Limited completion support for partition bound specification */
    2615          14 :     else if (TailMatches("PARTITION", "OF", MatchAny))
    2616           0 :         COMPLETE_WITH("FOR VALUES", "DEFAULT");
    2617             :     /* Complete CREATE TABLE <name> with '(', OF or PARTITION OF */
    2618          28 :     else if (TailMatches("CREATE", "TABLE", MatchAny) ||
    2619          14 :              TailMatches("CREATE", "TEMP|TEMPORARY|UNLOGGED", "TABLE", MatchAny))
    2620           0 :         COMPLETE_WITH("(", "OF", "PARTITION OF");
    2621             :     /* Complete CREATE TABLE <name> OF with list of composite types */
    2622          28 :     else if (TailMatches("CREATE", "TABLE", MatchAny, "OF") ||
    2623          14 :              TailMatches("CREATE", "TEMP|TEMPORARY|UNLOGGED", "TABLE", MatchAny, "OF"))
    2624           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_composite_datatypes, NULL);
    2625             :     /* Complete CREATE TABLE name (...) with supported options */
    2626          28 :     else if (TailMatches("CREATE", "TABLE", MatchAny, "(*)") ||
    2627          14 :              TailMatches("CREATE", "UNLOGGED", "TABLE", MatchAny, "(*)"))
    2628           0 :         COMPLETE_WITH("INHERITS (", "PARTITION BY", "USING", "TABLESPACE", "WITH (");
    2629          14 :     else if (TailMatches("CREATE", "TEMP|TEMPORARY", "TABLE", MatchAny, "(*)"))
    2630           0 :         COMPLETE_WITH("INHERITS (", "ON COMMIT", "PARTITION BY",
    2631             :                       "TABLESPACE", "WITH (");
    2632             :     /* Complete CREATE TABLE (...) USING with table access methods */
    2633          28 :     else if (TailMatches("CREATE", "TABLE", MatchAny, "(*)", "USING") ||
    2634          14 :              TailMatches("CREATE", "TEMP|TEMPORARY|UNLOGGED", "TABLE", MatchAny, "(*)", "USING"))
    2635           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_table_access_methods);
    2636             :     /* Complete CREATE TABLE (...) WITH with storage parameters */
    2637          28 :     else if (TailMatches("CREATE", "TABLE", MatchAny, "(*)", "WITH", "(") ||
    2638          14 :              TailMatches("CREATE", "TEMP|TEMPORARY|UNLOGGED", "TABLE", MatchAny, "(*)", "WITH", "("))
    2639           0 :         COMPLETE_WITH_LIST(table_storage_parameters);
    2640             :     /* Complete CREATE TABLE ON COMMIT with actions */
    2641          14 :     else if (TailMatches("CREATE", "TEMP|TEMPORARY", "TABLE", MatchAny, "(*)", "ON", "COMMIT"))
    2642           0 :         COMPLETE_WITH("DELETE ROWS", "DROP", "PRESERVE ROWS");
    2643             : 
    2644             : /* CREATE TABLESPACE */
    2645          14 :     else if (Matches("CREATE", "TABLESPACE", MatchAny))
    2646           0 :         COMPLETE_WITH("OWNER", "LOCATION");
    2647             :     /* Complete CREATE TABLESPACE name OWNER name with "LOCATION" */
    2648          14 :     else if (Matches("CREATE", "TABLESPACE", MatchAny, "OWNER", MatchAny))
    2649           0 :         COMPLETE_WITH("LOCATION");
    2650             : 
    2651             : /* CREATE TEXT SEARCH */
    2652          14 :     else if (Matches("CREATE", "TEXT", "SEARCH"))
    2653           0 :         COMPLETE_WITH("CONFIGURATION", "DICTIONARY", "PARSER", "TEMPLATE");
    2654          14 :     else if (Matches("CREATE", "TEXT", "SEARCH", "CONFIGURATION|DICTIONARY|PARSER|TEMPLATE", MatchAny))
    2655           0 :         COMPLETE_WITH("(");
    2656             : 
    2657             : /* CREATE SUBSCRIPTION */
    2658          14 :     else if (Matches("CREATE", "SUBSCRIPTION", MatchAny))
    2659           0 :         COMPLETE_WITH("CONNECTION");
    2660          14 :     else if (Matches("CREATE", "SUBSCRIPTION", MatchAny, "CONNECTION", MatchAny))
    2661           0 :         COMPLETE_WITH("PUBLICATION");
    2662          14 :     else if (Matches("CREATE", "SUBSCRIPTION", MatchAny, "CONNECTION",
    2663             :                      MatchAny, "PUBLICATION"))
    2664             :     {
    2665             :         /* complete with nothing here as this refers to remote publications */
    2666             :     }
    2667          14 :     else if (HeadMatches("CREATE", "SUBSCRIPTION") && TailMatches("PUBLICATION", MatchAny))
    2668           0 :         COMPLETE_WITH("WITH (");
    2669             :     /* Complete "CREATE SUBSCRIPTION <name> ...  WITH ( <opt>" */
    2670          14 :     else if (HeadMatches("CREATE", "SUBSCRIPTION") && TailMatches("WITH", "("))
    2671           0 :         COMPLETE_WITH("copy_data", "connect", "create_slot", "enabled",
    2672             :                       "slot_name", "synchronous_commit");
    2673             : 
    2674             : /* CREATE TRIGGER --- is allowed inside CREATE SCHEMA, so use TailMatches */
    2675             :     /* complete CREATE TRIGGER <name> with BEFORE,AFTER,INSTEAD OF */
    2676          14 :     else if (TailMatches("CREATE", "TRIGGER", MatchAny))
    2677           0 :         COMPLETE_WITH("BEFORE", "AFTER", "INSTEAD OF");
    2678             :     /* complete CREATE TRIGGER <name> BEFORE,AFTER with an event */
    2679          14 :     else if (TailMatches("CREATE", "TRIGGER", MatchAny, "BEFORE|AFTER"))
    2680           0 :         COMPLETE_WITH("INSERT", "DELETE", "UPDATE", "TRUNCATE");
    2681             :     /* complete CREATE TRIGGER <name> INSTEAD OF with an event */
    2682          14 :     else if (TailMatches("CREATE", "TRIGGER", MatchAny, "INSTEAD", "OF"))
    2683           0 :         COMPLETE_WITH("INSERT", "DELETE", "UPDATE");
    2684             :     /* complete CREATE TRIGGER <name> BEFORE,AFTER sth with OR,ON */
    2685          28 :     else if (TailMatches("CREATE", "TRIGGER", MatchAny, "BEFORE|AFTER", MatchAny) ||
    2686          14 :              TailMatches("CREATE", "TRIGGER", MatchAny, "INSTEAD", "OF", MatchAny))
    2687           0 :         COMPLETE_WITH("ON", "OR");
    2688             : 
    2689             :     /*
    2690             :      * complete CREATE TRIGGER <name> BEFORE,AFTER event ON with a list of
    2691             :      * tables.  EXECUTE FUNCTION is the recommended grammar instead of EXECUTE
    2692             :      * PROCEDURE in version 11 and upwards.
    2693             :      */
    2694          14 :     else if (TailMatches("CREATE", "TRIGGER", MatchAny, "BEFORE|AFTER", MatchAny, "ON"))
    2695           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);
    2696             :     /* complete CREATE TRIGGER ... INSTEAD OF event ON with a list of views */
    2697          14 :     else if (TailMatches("CREATE", "TRIGGER", MatchAny, "INSTEAD", "OF", MatchAny, "ON"))
    2698           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_views, NULL);
    2699          14 :     else if (HeadMatches("CREATE", "TRIGGER") && TailMatches("ON", MatchAny))
    2700             :     {
    2701           0 :         if (pset.sversion >= 110000)
    2702           0 :             COMPLETE_WITH("NOT DEFERRABLE", "DEFERRABLE", "INITIALLY",
    2703             :                           "REFERENCING", "FOR", "WHEN (", "EXECUTE FUNCTION");
    2704             :         else
    2705           0 :             COMPLETE_WITH("NOT DEFERRABLE", "DEFERRABLE", "INITIALLY",
    2706             :                           "REFERENCING", "FOR", "WHEN (", "EXECUTE PROCEDURE");
    2707             :     }
    2708          14 :     else if (HeadMatches("CREATE", "TRIGGER") &&
    2709           0 :              (TailMatches("DEFERRABLE") || TailMatches("INITIALLY", "IMMEDIATE|DEFERRED")))
    2710             :     {
    2711           0 :         if (pset.sversion >= 110000)
    2712           0 :             COMPLETE_WITH("REFERENCING", "FOR", "WHEN (", "EXECUTE FUNCTION");
    2713             :         else
    2714           0 :             COMPLETE_WITH("REFERENCING", "FOR", "WHEN (", "EXECUTE PROCEDURE");
    2715             :     }
    2716          14 :     else if (HeadMatches("CREATE", "TRIGGER") && TailMatches("REFERENCING"))
    2717           0 :         COMPLETE_WITH("OLD TABLE", "NEW TABLE");
    2718          14 :     else if (HeadMatches("CREATE", "TRIGGER") && TailMatches("OLD|NEW", "TABLE"))
    2719           0 :         COMPLETE_WITH("AS");
    2720          14 :     else if (HeadMatches("CREATE", "TRIGGER") &&
    2721           0 :              (TailMatches("REFERENCING", "OLD", "TABLE", "AS", MatchAny) ||
    2722           0 :               TailMatches("REFERENCING", "OLD", "TABLE", MatchAny)))
    2723             :     {
    2724           0 :         if (pset.sversion >= 110000)
    2725           0 :             COMPLETE_WITH("NEW TABLE", "FOR", "WHEN (", "EXECUTE FUNCTION");
    2726             :         else
    2727           0 :             COMPLETE_WITH("NEW TABLE", "FOR", "WHEN (", "EXECUTE PROCEDURE");
    2728             :     }
    2729          14 :     else if (HeadMatches("CREATE", "TRIGGER") &&
    2730           0 :              (TailMatches("REFERENCING", "NEW", "TABLE", "AS", MatchAny) ||
    2731           0 :               TailMatches("REFERENCING", "NEW", "TABLE", MatchAny)))
    2732             :     {
    2733           0 :         if (pset.sversion >= 110000)
    2734           0 :             COMPLETE_WITH("OLD TABLE", "FOR", "WHEN (", "EXECUTE FUNCTION");
    2735             :         else
    2736           0 :             COMPLETE_WITH("OLD TABLE", "FOR", "WHEN (", "EXECUTE PROCEDURE");
    2737             :     }
    2738          14 :     else if (HeadMatches("CREATE", "TRIGGER") &&
    2739           0 :              (TailMatches("REFERENCING", "OLD|NEW", "TABLE", "AS", MatchAny, "OLD|NEW", "TABLE", "AS", MatchAny) ||
    2740           0 :               TailMatches("REFERENCING", "OLD|NEW", "TABLE", MatchAny, "OLD|NEW", "TABLE", "AS", MatchAny) ||
    2741           0 :               TailMatches("REFERENCING", "OLD|NEW", "TABLE", "AS", MatchAny, "OLD|NEW", "TABLE", MatchAny) ||
    2742           0 :               TailMatches("REFERENCING", "OLD|NEW", "TABLE", MatchAny, "OLD|NEW", "TABLE", MatchAny)))
    2743             :     {
    2744           0 :         if (pset.sversion >= 110000)
    2745           0 :             COMPLETE_WITH("FOR", "WHEN (", "EXECUTE FUNCTION");
    2746             :         else
    2747           0 :             COMPLETE_WITH("FOR", "WHEN (", "EXECUTE PROCEDURE");
    2748             :     }
    2749          14 :     else if (HeadMatches("CREATE", "TRIGGER") && TailMatches("FOR"))
    2750           0 :         COMPLETE_WITH("EACH", "ROW", "STATEMENT");
    2751          14 :     else if (HeadMatches("CREATE", "TRIGGER") && TailMatches("FOR", "EACH"))
    2752           0 :         COMPLETE_WITH("ROW", "STATEMENT");
    2753          14 :     else if (HeadMatches("CREATE", "TRIGGER") &&
    2754           0 :              (TailMatches("FOR", "EACH", "ROW|STATEMENT") ||
    2755           0 :               TailMatches("FOR", "ROW|STATEMENT")))
    2756             :     {
    2757           0 :         if (pset.sversion >= 110000)
    2758           0 :             COMPLETE_WITH("WHEN (", "EXECUTE FUNCTION");
    2759             :         else
    2760           0 :             COMPLETE_WITH("WHEN (", "EXECUTE PROCEDURE");
    2761             :     }
    2762          14 :     else if (HeadMatches("CREATE", "TRIGGER") && TailMatches("WHEN", "(*)"))
    2763             :     {
    2764           0 :         if (pset.sversion >= 110000)
    2765           0 :             COMPLETE_WITH("EXECUTE FUNCTION");
    2766             :         else
    2767           0 :             COMPLETE_WITH("EXECUTE PROCEDURE");
    2768             :     }
    2769             :     /* complete CREATE TRIGGER ... EXECUTE with PROCEDURE|FUNCTION */
    2770          14 :     else if (HeadMatches("CREATE", "TRIGGER") && TailMatches("EXECUTE"))
    2771             :     {
    2772           0 :         if (pset.sversion >= 110000)
    2773           0 :             COMPLETE_WITH("FUNCTION");
    2774             :         else
    2775           0 :             COMPLETE_WITH("PROCEDURE");
    2776             :     }
    2777          14 :     else if (HeadMatches("CREATE", "TRIGGER") &&
    2778           0 :              TailMatches("EXECUTE", "FUNCTION|PROCEDURE"))
    2779           0 :         COMPLETE_WITH_VERSIONED_SCHEMA_QUERY(Query_for_list_of_functions, NULL);
    2780             : 
    2781             : /* CREATE ROLE,USER,GROUP <name> */
    2782          14 :     else if (Matches("CREATE", "ROLE|GROUP|USER", MatchAny) &&
    2783           0 :              !TailMatches("USER", "MAPPING"))
    2784           0 :         COMPLETE_WITH("ADMIN", "BYPASSRLS", "CONNECTION LIMIT", "CREATEDB",
    2785             :                       "CREATEROLE", "ENCRYPTED PASSWORD", "IN", "INHERIT",
    2786             :                       "LOGIN", "NOBYPASSRLS",
    2787             :                       "NOCREATEDB", "NOCREATEROLE", "NOINHERIT",
    2788             :                       "NOLOGIN", "NOREPLICATION", "NOSUPERUSER", "PASSWORD",
    2789             :                       "REPLICATION", "ROLE", "SUPERUSER", "SYSID",
    2790             :                       "VALID UNTIL", "WITH");
    2791             : 
    2792             : /* CREATE ROLE,USER,GROUP <name> WITH */
    2793          14 :     else if (Matches("CREATE", "ROLE|GROUP|USER", MatchAny, "WITH"))
    2794             :         /* Similar to the above, but don't complete "WITH" again. */
    2795           0 :         COMPLETE_WITH("ADMIN", "BYPASSRLS", "CONNECTION LIMIT", "CREATEDB",
    2796             :                       "CREATEROLE", "ENCRYPTED PASSWORD", "IN", "INHERIT",
    2797             :                       "LOGIN", "NOBYPASSRLS",
    2798             :                       "NOCREATEDB", "NOCREATEROLE", "NOINHERIT",
    2799             :                       "NOLOGIN", "NOREPLICATION", "NOSUPERUSER", "PASSWORD",
    2800             :                       "REPLICATION", "ROLE", "SUPERUSER", "SYSID",
    2801             :                       "VALID UNTIL");
    2802             : 
    2803             :     /* complete CREATE ROLE,USER,GROUP <name> IN with ROLE,GROUP */
    2804          14 :     else if (Matches("CREATE", "ROLE|USER|GROUP", MatchAny, "IN"))
    2805           0 :         COMPLETE_WITH("GROUP", "ROLE");
    2806             : 
    2807             : /* CREATE TYPE */
    2808          14 :     else if (Matches("CREATE", "TYPE", MatchAny))
    2809           0 :         COMPLETE_WITH("(", "AS");
    2810          14 :     else if (Matches("CREATE", "TYPE", MatchAny, "AS"))
    2811           0 :         COMPLETE_WITH("ENUM", "RANGE", "(");
    2812          14 :     else if (HeadMatches("CREATE", "TYPE", MatchAny, "AS", "("))
    2813             :     {
    2814           0 :         if (TailMatches("(|*,", MatchAny))
    2815           0 :             COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_datatypes, NULL);
    2816           0 :         else if (TailMatches("(|*,", MatchAny, MatchAnyExcept("*)")))
    2817           0 :             COMPLETE_WITH("COLLATE", ",", ")");
    2818             :     }
    2819          14 :     else if (Matches("CREATE", "TYPE", MatchAny, "AS", "ENUM|RANGE"))
    2820           0 :         COMPLETE_WITH("(");
    2821          14 :     else if (HeadMatches("CREATE", "TYPE", MatchAny, "("))
    2822             :     {
    2823           0 :         if (TailMatches("(|*,"))
    2824           0 :             COMPLETE_WITH("INPUT", "OUTPUT", "RECEIVE", "SEND",
    2825             :                           "TYPMOD_IN", "TYPMOD_OUT", "ANALYZE",
    2826             :                           "INTERNALLENGTH", "PASSEDBYVALUE", "ALIGNMENT",
    2827             :                           "STORAGE", "LIKE", "CATEGORY", "PREFERRED",
    2828             :                           "DEFAULT", "ELEMENT", "DELIMITER",
    2829             :                           "COLLATABLE");
    2830           0 :         else if (TailMatches("(*|*,", MatchAnyExcept("*=")))
    2831           0 :             COMPLETE_WITH("=");
    2832           0 :         else if (TailMatches("=", MatchAnyExcept("*)")))
    2833           0 :             COMPLETE_WITH(",", ")");
    2834             :     }
    2835          14 :     else if (HeadMatches("CREATE", "TYPE", MatchAny, "AS", "RANGE", "("))
    2836             :     {
    2837           0 :         if (TailMatches("(|*,"))
    2838           0 :             COMPLETE_WITH("SUBTYPE", "SUBTYPE_OPCLASS", "COLLATION",
    2839             :                           "CANONICAL", "SUBTYPE_DIFF");
    2840           0 :         else if (TailMatches("(*|*,", MatchAnyExcept("*=")))
    2841           0 :             COMPLETE_WITH("=");
    2842           0 :         else if (TailMatches("=", MatchAnyExcept("*)")))
    2843           0 :             COMPLETE_WITH(",", ")");
    2844             :     }
    2845             : 
    2846             : /* CREATE VIEW --- is allowed inside CREATE SCHEMA, so use TailMatches */
    2847             :     /* Complete CREATE [ OR REPLACE ] VIEW <name> with AS */
    2848          28 :     else if (TailMatches("CREATE", "VIEW", MatchAny) ||
    2849          14 :              TailMatches("CREATE", "OR", "REPLACE", "VIEW", MatchAny))
    2850           0 :         COMPLETE_WITH("AS");
    2851             :     /* Complete "CREATE [ OR REPLACE ] VIEW <sth> AS with "SELECT" */
    2852          28 :     else if (TailMatches("CREATE", "VIEW", MatchAny, "AS") ||
    2853          14 :              TailMatches("CREATE", "OR", "REPLACE", "VIEW", MatchAny, "AS"))
    2854           0 :         COMPLETE_WITH("SELECT");
    2855             : 
    2856             : /* CREATE MATERIALIZED VIEW */
    2857          14 :     else if (Matches("CREATE", "MATERIALIZED"))
    2858           0 :         COMPLETE_WITH("VIEW");
    2859             :     /* Complete CREATE MATERIALIZED VIEW <name> with AS */
    2860          14 :     else if (Matches("CREATE", "MATERIALIZED", "VIEW", MatchAny))
    2861           0 :         COMPLETE_WITH("AS");
    2862             :     /* Complete "CREATE MATERIALIZED VIEW <sth> AS with "SELECT" */
    2863          14 :     else if (Matches("CREATE", "MATERIALIZED", "VIEW", MatchAny, "AS"))
    2864           0 :         COMPLETE_WITH("SELECT");
    2865             : 
    2866             : /* CREATE EVENT TRIGGER */
    2867          14 :     else if (Matches("CREATE", "EVENT"))
    2868           0 :         COMPLETE_WITH("TRIGGER");
    2869             :     /* Complete CREATE EVENT TRIGGER <name> with ON */
    2870          14 :     else if (Matches("CREATE", "EVENT", "TRIGGER", MatchAny))
    2871           0 :         COMPLETE_WITH("ON");
    2872             :     /* Complete CREATE EVENT TRIGGER <name> ON with event_type */
    2873          14 :     else if (Matches("CREATE", "EVENT", "TRIGGER", MatchAny, "ON"))
    2874           0 :         COMPLETE_WITH("ddl_command_start", "ddl_command_end", "sql_drop");
    2875             : 
    2876             :     /*
    2877             :      * Complete CREATE EVENT TRIGGER <name> ON <event_type>.  EXECUTE FUNCTION
    2878             :      * is the recommended grammar instead of EXECUTE PROCEDURE in version 11
    2879             :      * and upwards.
    2880             :      */
    2881          14 :     else if (Matches("CREATE", "EVENT", "TRIGGER", MatchAny, "ON", MatchAny))
    2882             :     {
    2883           0 :         if (pset.sversion >= 110000)
    2884           0 :             COMPLETE_WITH("WHEN TAG IN (", "EXECUTE FUNCTION");
    2885             :         else
    2886           0 :             COMPLETE_WITH("WHEN TAG IN (", "EXECUTE PROCEDURE");
    2887             :     }
    2888          14 :     else if (HeadMatches("CREATE", "EVENT", "TRIGGER") &&
    2889           0 :              TailMatches("WHEN|AND", MatchAny, "IN", "(*)"))
    2890             :     {
    2891           0 :         if (pset.sversion >= 110000)
    2892           0 :             COMPLETE_WITH("EXECUTE FUNCTION");
    2893             :         else
    2894           0 :             COMPLETE_WITH("EXECUTE PROCEDURE");
    2895             :     }
    2896          14 :     else if (HeadMatches("CREATE", "EVENT", "TRIGGER") &&
    2897           0 :              TailMatches("EXECUTE", "FUNCTION|PROCEDURE"))
    2898           0 :         COMPLETE_WITH_VERSIONED_SCHEMA_QUERY(Query_for_list_of_functions, NULL);
    2899             : 
    2900             : /* DEALLOCATE */
    2901          14 :     else if (Matches("DEALLOCATE"))
    2902           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_prepared_statements);
    2903             : 
    2904             : /* DECLARE */
    2905          14 :     else if (Matches("DECLARE", MatchAny))
    2906           0 :         COMPLETE_WITH("BINARY", "INSENSITIVE", "SCROLL", "NO SCROLL",
    2907             :                       "CURSOR");
    2908          14 :     else if (HeadMatches("DECLARE") && TailMatches("CURSOR"))
    2909           0 :         COMPLETE_WITH("WITH HOLD", "WITHOUT HOLD", "FOR");
    2910             : 
    2911             : /* DELETE --- can be inside EXPLAIN, RULE, etc */
    2912             :     /* ... despite which, only complete DELETE with FROM at start of line */
    2913          14 :     else if (Matches("DELETE"))
    2914           0 :         COMPLETE_WITH("FROM");
    2915             :     /* Complete DELETE FROM with a list of tables */
    2916          14 :     else if (TailMatches("DELETE", "FROM"))
    2917           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_updatables, NULL);
    2918             :     /* Complete DELETE FROM <table> */
    2919          14 :     else if (TailMatches("DELETE", "FROM", MatchAny))
    2920           0 :         COMPLETE_WITH("USING", "WHERE");
    2921             :     /* XXX: implement tab completion for DELETE ... USING */
    2922             : 
    2923             : /* DISCARD */
    2924          14 :     else if (Matches("DISCARD"))
    2925           0 :         COMPLETE_WITH("ALL", "PLANS", "SEQUENCES", "TEMP");
    2926             : 
    2927             : /* DO */
    2928          14 :     else if (Matches("DO"))
    2929           0 :         COMPLETE_WITH("LANGUAGE");
    2930             : 
    2931             : /* DROP */
    2932             :     /* Complete DROP object with CASCADE / RESTRICT */
    2933          14 :     else if (Matches("DROP",
    2934             :                      "COLLATION|CONVERSION|DOMAIN|EXTENSION|LANGUAGE|PUBLICATION|SCHEMA|SEQUENCE|SERVER|SUBSCRIPTION|STATISTICS|TABLE|TYPE|VIEW",
    2935          14 :                      MatchAny) ||
    2936          28 :              Matches("DROP", "ACCESS", "METHOD", MatchAny) ||
    2937          14 :              (Matches("DROP", "AGGREGATE|FUNCTION|PROCEDURE|ROUTINE", MatchAny, MatchAny) &&
    2938          14 :               ends_with(prev_wd, ')')) ||
    2939          28 :              Matches("DROP", "EVENT", "TRIGGER", MatchAny) ||
    2940          28 :              Matches("DROP", "FOREIGN", "DATA", "WRAPPER", MatchAny) ||
    2941          28 :              Matches("DROP", "FOREIGN", "TABLE", MatchAny) ||
    2942          14 :              Matches("DROP", "TEXT", "SEARCH", "CONFIGURATION|DICTIONARY|PARSER|TEMPLATE", MatchAny))
    2943           0 :         COMPLETE_WITH("CASCADE", "RESTRICT");
    2944             : 
    2945             :     /* help completing some of the variants */
    2946          14 :     else if (Matches("DROP", "AGGREGATE|FUNCTION|PROCEDURE|ROUTINE", MatchAny))
    2947           0 :         COMPLETE_WITH("(");
    2948          14 :     else if (Matches("DROP", "AGGREGATE|FUNCTION|PROCEDURE|ROUTINE", MatchAny, "("))
    2949           0 :         COMPLETE_WITH_FUNCTION_ARG(prev2_wd);
    2950          14 :     else if (Matches("DROP", "FOREIGN"))
    2951           0 :         COMPLETE_WITH("DATA WRAPPER", "TABLE");
    2952          14 :     else if (Matches("DROP", "DATABASE", MatchAny))
    2953           0 :         COMPLETE_WITH("WITH (");
    2954          14 :     else if (HeadMatches("DROP", "DATABASE") && (ends_with(prev_wd, '(')))
    2955           0 :         COMPLETE_WITH("FORCE");
    2956             : 
    2957             :     /* DROP INDEX */
    2958          14 :     else if (Matches("DROP", "INDEX"))
    2959           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexes,
    2960             :                                    " UNION SELECT 'CONCURRENTLY'");
    2961          14 :     else if (Matches("DROP", "INDEX", "CONCURRENTLY"))
    2962           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexes, NULL);
    2963          14 :     else if (Matches("DROP", "INDEX", MatchAny))
    2964           0 :         COMPLETE_WITH("CASCADE", "RESTRICT");
    2965          14 :     else if (Matches("DROP", "INDEX", "CONCURRENTLY", MatchAny))
    2966           0 :         COMPLETE_WITH("CASCADE", "RESTRICT");
    2967             : 
    2968             :     /* DROP MATERIALIZED VIEW */
    2969          14 :     else if (Matches("DROP", "MATERIALIZED"))
    2970           0 :         COMPLETE_WITH("VIEW");
    2971          14 :     else if (Matches("DROP", "MATERIALIZED", "VIEW"))
    2972           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_matviews, NULL);
    2973             : 
    2974             :     /* DROP OWNED BY */
    2975          14 :     else if (Matches("DROP", "OWNED"))
    2976           0 :         COMPLETE_WITH("BY");
    2977          14 :     else if (Matches("DROP", "OWNED", "BY"))
    2978           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_roles);
    2979             : 
    2980             :     /* DROP TEXT SEARCH */
    2981          14 :     else if (Matches("DROP", "TEXT", "SEARCH"))
    2982           0 :         COMPLETE_WITH("CONFIGURATION", "DICTIONARY", "PARSER", "TEMPLATE");
    2983             : 
    2984             :     /* DROP TRIGGER */
    2985          14 :     else if (Matches("DROP", "TRIGGER", MatchAny))
    2986           0 :         COMPLETE_WITH("ON");
    2987          14 :     else if (Matches("DROP", "TRIGGER", MatchAny, "ON"))
    2988             :     {
    2989           0 :         completion_info_charp = prev2_wd;
    2990           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_tables_for_trigger);
    2991             :     }
    2992          14 :     else if (Matches("DROP", "TRIGGER", MatchAny, "ON", MatchAny))
    2993           0 :         COMPLETE_WITH("CASCADE", "RESTRICT");
    2994             : 
    2995             :     /* DROP ACCESS METHOD */
    2996          14 :     else if (Matches("DROP", "ACCESS"))
    2997           0 :         COMPLETE_WITH("METHOD");
    2998          14 :     else if (Matches("DROP", "ACCESS", "METHOD"))
    2999           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_access_methods);
    3000             : 
    3001             :     /* DROP EVENT TRIGGER */
    3002          14 :     else if (Matches("DROP", "EVENT"))
    3003           0 :         COMPLETE_WITH("TRIGGER");
    3004          14 :     else if (Matches("DROP", "EVENT", "TRIGGER"))
    3005           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_event_triggers);
    3006             : 
    3007             :     /* DROP POLICY <name>  */
    3008          14 :     else if (Matches("DROP", "POLICY"))
    3009           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_policies);
    3010             :     /* DROP POLICY <name> ON */
    3011          14 :     else if (Matches("DROP", "POLICY", MatchAny))
    3012           0 :         COMPLETE_WITH("ON");
    3013             :     /* DROP POLICY <name> ON <table> */
    3014          14 :     else if (Matches("DROP", "POLICY", MatchAny, "ON"))
    3015             :     {
    3016           0 :         completion_info_charp = prev2_wd;
    3017           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_tables_for_policy);
    3018             :     }
    3019             : 
    3020             :     /* DROP RULE */
    3021          14 :     else if (Matches("DROP", "RULE", MatchAny))
    3022           0 :         COMPLETE_WITH("ON");
    3023          14 :     else if (Matches("DROP", "RULE", MatchAny, "ON"))
    3024             :     {
    3025           0 :         completion_info_charp = prev2_wd;
    3026           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_tables_for_rule);
    3027             :     }
    3028          14 :     else if (Matches("DROP", "RULE", MatchAny, "ON", MatchAny))
    3029           0 :         COMPLETE_WITH("CASCADE", "RESTRICT");
    3030             : 
    3031             : /* EXECUTE */
    3032          14 :     else if (Matches("EXECUTE"))
    3033           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_prepared_statements);
    3034             : 
    3035             : /*
    3036             :  * EXPLAIN [ ( option [, ...] ) ] statement
    3037             :  * EXPLAIN [ ANALYZE ] [ VERBOSE ] statement
    3038             :  */
    3039          14 :     else if (Matches("EXPLAIN"))
    3040           0 :         COMPLETE_WITH("SELECT", "INSERT", "DELETE", "UPDATE", "DECLARE",
    3041             :                       "ANALYZE", "VERBOSE");
    3042          14 :     else if (HeadMatches("EXPLAIN", "(*") &&
    3043           0 :              !HeadMatches("EXPLAIN", "(*)"))
    3044             :     {
    3045             :         /*
    3046             :          * This fires if we're in an unfinished parenthesized option list.
    3047             :          * get_previous_words treats a completed parenthesized option list as
    3048             :          * one word, so the above test is correct.
    3049             :          */
    3050           0 :         if (ends_with(prev_wd, '(') || ends_with(prev_wd, ','))
    3051           0 :             COMPLETE_WITH("ANALYZE", "VERBOSE", "COSTS", "SETTINGS",
    3052             :                           "BUFFERS", "WAL", "TIMING", "SUMMARY", "FORMAT");
    3053           0 :         else if (TailMatches("ANALYZE|VERBOSE|COSTS|SETTINGS|BUFFERS|WAL|TIMING|SUMMARY"))
    3054           0 :             COMPLETE_WITH("ON", "OFF");
    3055           0 :         else if (TailMatches("FORMAT"))
    3056           0 :             COMPLETE_WITH("TEXT", "XML", "JSON", "YAML");
    3057             :     }
    3058          14 :     else if (Matches("EXPLAIN", "ANALYZE"))
    3059           0 :         COMPLETE_WITH("SELECT", "INSERT", "DELETE", "UPDATE", "DECLARE",
    3060             :                       "VERBOSE");
    3061          28 :     else if (Matches("EXPLAIN", "(*)") ||
    3062          28 :              Matches("EXPLAIN", "VERBOSE") ||
    3063          14 :              Matches("EXPLAIN", "ANALYZE", "VERBOSE"))
    3064           0 :         COMPLETE_WITH("SELECT", "INSERT", "DELETE", "UPDATE", "DECLARE");
    3065             : 
    3066             : /* FETCH && MOVE */
    3067             :     /* Complete FETCH with one of FORWARD, BACKWARD, RELATIVE */
    3068          14 :     else if (Matches("FETCH|MOVE"))
    3069           0 :         COMPLETE_WITH("ABSOLUTE", "BACKWARD", "FORWARD", "RELATIVE");
    3070             :     /* Complete FETCH <sth> with one of ALL, NEXT, PRIOR */
    3071          14 :     else if (Matches("FETCH|MOVE", MatchAny))
    3072           0 :         COMPLETE_WITH("ALL", "NEXT", "PRIOR");
    3073             : 
    3074             :     /*
    3075             :      * Complete FETCH <sth1> <sth2> with "FROM" or "IN". These are equivalent,
    3076             :      * but we may as well tab-complete both: perhaps some users prefer one
    3077             :      * variant or the other.
    3078             :      */
    3079          14 :     else if (Matches("FETCH|MOVE", MatchAny, MatchAny))
    3080           0 :         COMPLETE_WITH("FROM", "IN");
    3081             : 
    3082             : /* FOREIGN DATA WRAPPER */
    3083             :     /* applies in ALTER/DROP FDW and in CREATE SERVER */
    3084          14 :     else if (TailMatches("FOREIGN", "DATA", "WRAPPER") &&
    3085           0 :              !TailMatches("CREATE", MatchAny, MatchAny, MatchAny))
    3086           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_fdws);
    3087             :     /* applies in CREATE SERVER */
    3088          14 :     else if (TailMatches("FOREIGN", "DATA", "WRAPPER", MatchAny) &&
    3089           0 :              HeadMatches("CREATE", "SERVER"))
    3090           0 :         COMPLETE_WITH("OPTIONS");
    3091             : 
    3092             : /* FOREIGN TABLE */
    3093          14 :     else if (TailMatches("FOREIGN", "TABLE") &&
    3094           0 :              !TailMatches("CREATE", MatchAny, MatchAny))
    3095           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_foreign_tables, NULL);
    3096             : 
    3097             : /* FOREIGN SERVER */
    3098          14 :     else if (TailMatches("FOREIGN", "SERVER"))
    3099           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_servers);
    3100             : 
    3101             : /*
    3102             :  * GRANT and REVOKE are allowed inside CREATE SCHEMA and
    3103             :  * ALTER DEFAULT PRIVILEGES, so use TailMatches
    3104             :  */
    3105             :     /* Complete GRANT/REVOKE with a list of roles and privileges */
    3106          14 :     else if (TailMatches("GRANT|REVOKE"))
    3107             :     {
    3108             :         /*
    3109             :          * With ALTER DEFAULT PRIVILEGES, restrict completion to grantable
    3110             :          * privileges (can't grant roles)
    3111             :          */
    3112           0 :         if (HeadMatches("ALTER", "DEFAULT", "PRIVILEGES"))
    3113           0 :             COMPLETE_WITH("SELECT", "INSERT", "UPDATE",
    3114             :                           "DELETE", "TRUNCATE", "REFERENCES", "TRIGGER",
    3115             :                           "EXECUTE", "USAGE", "ALL");
    3116             :         else
    3117           0 :             COMPLETE_WITH_QUERY(Query_for_list_of_roles
    3118             :                                 " UNION SELECT 'SELECT'"
    3119             :                                 " UNION SELECT 'INSERT'"
    3120             :                                 " UNION SELECT 'UPDATE'"
    3121             :                                 " UNION SELECT 'DELETE'"
    3122             :                                 " UNION SELECT 'TRUNCATE'"
    3123             :                                 " UNION SELECT 'REFERENCES'"
    3124             :                                 " UNION SELECT 'TRIGGER'"
    3125             :                                 " UNION SELECT 'CREATE'"
    3126             :                                 " UNION SELECT 'CONNECT'"
    3127             :                                 " UNION SELECT 'TEMPORARY'"
    3128             :                                 " UNION SELECT 'EXECUTE'"
    3129             :                                 " UNION SELECT 'USAGE'"
    3130             :                                 " UNION SELECT 'ALL'");
    3131             :     }
    3132             : 
    3133             :     /*
    3134             :      * Complete GRANT/REVOKE <privilege> with "ON", GRANT/REVOKE <role> with
    3135             :      * TO/FROM
    3136             :      */
    3137          14 :     else if (TailMatches("GRANT|REVOKE", MatchAny))
    3138             :     {
    3139           0 :         if (TailMatches("SELECT|INSERT|UPDATE|DELETE|TRUNCATE|REFERENCES|TRIGGER|CREATE|CONNECT|TEMPORARY|TEMP|EXECUTE|USAGE|ALL"))
    3140           0 :             COMPLETE_WITH("ON");
    3141           0 :         else if (TailMatches("GRANT", MatchAny))
    3142           0 :             COMPLETE_WITH("TO");
    3143             :         else
    3144           0 :             COMPLETE_WITH("FROM");
    3145             :     }
    3146             : 
    3147             :     /*
    3148             :      * Complete GRANT/REVOKE <sth> ON with a list of appropriate relations.
    3149             :      *
    3150             :      * Keywords like DATABASE, FUNCTION, LANGUAGE and SCHEMA added to query
    3151             :      * result via UNION; seems to work intuitively.
    3152             :      *
    3153             :      * Note: GRANT/REVOKE can get quite complex; tab-completion as implemented
    3154             :      * here will only work if the privilege list contains exactly one
    3155             :      * privilege.
    3156             :      */
    3157          14 :     else if (TailMatches("GRANT|REVOKE", MatchAny, "ON"))
    3158             :     {
    3159             :         /*
    3160             :          * With ALTER DEFAULT PRIVILEGES, restrict completion to the kinds of
    3161             :          * objects supported.
    3162             :          */
    3163           0 :         if (HeadMatches("ALTER", "DEFAULT", "PRIVILEGES"))
    3164           0 :             COMPLETE_WITH("TABLES", "SEQUENCES", "FUNCTIONS", "PROCEDURES", "ROUTINES", "TYPES", "SCHEMAS");
    3165             :         else
    3166           0 :             COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_grantables,
    3167             :                                        " UNION SELECT 'ALL FUNCTIONS IN SCHEMA'"
    3168             :                                        " UNION SELECT 'ALL PROCEDURES IN SCHEMA'"
    3169             :                                        " UNION SELECT 'ALL ROUTINES IN SCHEMA'"
    3170             :                                        " UNION SELECT 'ALL SEQUENCES IN SCHEMA'"
    3171             :                                        " UNION SELECT 'ALL TABLES IN SCHEMA'"
    3172             :                                        " UNION SELECT 'DATABASE'"
    3173             :                                        " UNION SELECT 'DOMAIN'"
    3174             :                                        " UNION SELECT 'FOREIGN DATA WRAPPER'"
    3175             :                                        " UNION SELECT 'FOREIGN SERVER'"
    3176             :                                        " UNION SELECT 'FUNCTION'"
    3177             :                                        " UNION SELECT 'LANGUAGE'"
    3178             :                                        " UNION SELECT 'LARGE OBJECT'"
    3179             :                                        " UNION SELECT 'PROCEDURE'"
    3180             :                                        " UNION SELECT 'ROUTINE'"
    3181             :                                        " UNION SELECT 'SCHEMA'"
    3182             :                                        " UNION SELECT 'SEQUENCE'"
    3183             :                                        " UNION SELECT 'TABLE'"
    3184             :                                        " UNION SELECT 'TABLESPACE'"
    3185             :                                        " UNION SELECT 'TYPE'");
    3186             :     }
    3187          14 :     else if (TailMatches("GRANT|REVOKE", MatchAny, "ON", "ALL"))
    3188           0 :         COMPLETE_WITH("FUNCTIONS IN SCHEMA",
    3189             :                       "PROCEDURES IN SCHEMA",
    3190             :                       "ROUTINES IN SCHEMA",
    3191             :                       "SEQUENCES IN SCHEMA",
    3192             :                       "TABLES IN SCHEMA");
    3193          14 :     else if (TailMatches("GRANT|REVOKE", MatchAny, "ON", "FOREIGN"))
    3194           0 :         COMPLETE_WITH("DATA WRAPPER", "SERVER");
    3195             : 
    3196             :     /*
    3197             :      * Complete "GRANT/REVOKE * ON DATABASE/DOMAIN/..." with a list of
    3198             :      * appropriate objects.
    3199             :      *
    3200             :      * Complete "GRANT/REVOKE * ON *" with "TO/FROM".
    3201             :      */
    3202          14 :     else if (TailMatches("GRANT|REVOKE", MatchAny, "ON", MatchAny))
    3203             :     {
    3204           0 :         if (TailMatches("DATABASE"))
    3205           0 :             COMPLETE_WITH_QUERY(Query_for_list_of_databases);
    3206           0 :         else if (TailMatches("DOMAIN"))
    3207           0 :             COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_domains, NULL);
    3208           0 :         else if (TailMatches("FUNCTION"))
    3209           0 :             COMPLETE_WITH_VERSIONED_SCHEMA_QUERY(Query_for_list_of_functions, NULL);
    3210           0 :         else if (TailMatches("LANGUAGE"))
    3211           0 :             COMPLETE_WITH_QUERY(Query_for_list_of_languages);
    3212           0 :         else if (TailMatches("PROCEDURE"))
    3213           0 :             COMPLETE_WITH_VERSIONED_SCHEMA_QUERY(Query_for_list_of_procedures, NULL);
    3214           0 :         else if (TailMatches("ROUTINE"))
    3215           0 :             COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_routines, NULL);
    3216           0 :         else if (TailMatches("SCHEMA"))
    3217           0 :             COMPLETE_WITH_QUERY(Query_for_list_of_schemas);
    3218           0 :         else if (TailMatches("SEQUENCE"))
    3219           0 :             COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_sequences, NULL);
    3220           0 :         else if (TailMatches("TABLE"))
    3221           0 :             COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_grantables, NULL);
    3222           0 :         else if (TailMatches("TABLESPACE"))
    3223           0 :             COMPLETE_WITH_QUERY(Query_for_list_of_tablespaces);
    3224           0 :         else if (TailMatches("TYPE"))
    3225           0 :             COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_datatypes, NULL);
    3226           0 :         else if (TailMatches("GRANT", MatchAny, MatchAny, MatchAny))
    3227           0 :             COMPLETE_WITH("TO");
    3228             :         else
    3229           0 :             COMPLETE_WITH("FROM");
    3230             :     }
    3231             : 
    3232             :     /*
    3233             :      * Complete "GRANT/REVOKE ... TO/FROM" with username, PUBLIC,
    3234             :      * CURRENT_USER, or SESSION_USER.
    3235             :      */
    3236          28 :     else if ((HeadMatches("GRANT") && TailMatches("TO")) ||
    3237          14 :              (HeadMatches("REVOKE") && TailMatches("FROM")))
    3238           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_grant_roles);
    3239             :     /* Complete "ALTER DEFAULT PRIVILEGES ... GRANT/REVOKE ... TO/FROM */
    3240          14 :     else if (HeadMatches("ALTER", "DEFAULT", "PRIVILEGES") && TailMatches("TO|FROM"))
    3241           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_grant_roles);
    3242             :     /* Complete "GRANT/REVOKE ... ON * *" with TO/FROM */
    3243          14 :     else if (HeadMatches("GRANT") && TailMatches("ON", MatchAny, MatchAny))
    3244           0 :         COMPLETE_WITH("TO");
    3245          14 :     else if (HeadMatches("REVOKE") && TailMatches("ON", MatchAny, MatchAny))
    3246           0 :         COMPLETE_WITH("FROM");
    3247             : 
    3248             :     /* Complete "GRANT/REVOKE * ON ALL * IN SCHEMA *" with TO/FROM */
    3249          14 :     else if (TailMatches("GRANT|REVOKE", MatchAny, "ON", "ALL", MatchAny, "IN", "SCHEMA", MatchAny))
    3250             :     {
    3251           0 :         if (TailMatches("GRANT", MatchAny, MatchAny, MatchAny, MatchAny, MatchAny, MatchAny, MatchAny))
    3252           0 :             COMPLETE_WITH("TO");
    3253             :         else
    3254           0 :             COMPLETE_WITH("FROM");
    3255             :     }
    3256             : 
    3257             :     /* Complete "GRANT/REVOKE * ON FOREIGN DATA WRAPPER *" with TO/FROM */
    3258          14 :     else if (TailMatches("GRANT|REVOKE", MatchAny, "ON", "FOREIGN", "DATA", "WRAPPER", MatchAny))
    3259             :     {
    3260           0 :         if (TailMatches("GRANT", MatchAny, MatchAny, MatchAny, MatchAny, MatchAny, MatchAny))
    3261           0 :             COMPLETE_WITH("TO");
    3262             :         else
    3263           0 :             COMPLETE_WITH("FROM");
    3264             :     }
    3265             : 
    3266             :     /* Complete "GRANT/REVOKE * ON FOREIGN SERVER *" with TO/FROM */
    3267          14 :     else if (TailMatches("GRANT|REVOKE", MatchAny, "ON", "FOREIGN", "SERVER", MatchAny))
    3268             :     {
    3269           0 :         if (TailMatches("GRANT", MatchAny, MatchAny, MatchAny, MatchAny, MatchAny))
    3270           0 :             COMPLETE_WITH("TO");
    3271             :         else
    3272           0 :             COMPLETE_WITH("FROM");
    3273             :     }
    3274             : 
    3275             : /* GROUP BY */
    3276          14 :     else if (TailMatches("FROM", MatchAny, "GROUP"))
    3277           0 :         COMPLETE_WITH("BY");
    3278             : 
    3279             : /* IMPORT FOREIGN SCHEMA */
    3280          14 :     else if (Matches("IMPORT"))
    3281           0 :         COMPLETE_WITH("FOREIGN SCHEMA");
    3282          14 :     else if (Matches("IMPORT", "FOREIGN"))
    3283           0 :         COMPLETE_WITH("SCHEMA");
    3284             : 
    3285             : /* INSERT --- can be inside EXPLAIN, RULE, etc */
    3286             :     /* Complete INSERT with "INTO" */
    3287          14 :     else if (TailMatches("INSERT"))
    3288           0 :         COMPLETE_WITH("INTO");
    3289             :     /* Complete INSERT INTO with table names */
    3290          14 :     else if (TailMatches("INSERT", "INTO"))
    3291           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_updatables, NULL);
    3292             :     /* Complete "INSERT INTO <table> (" with attribute names */
    3293          14 :     else if (TailMatches("INSERT", "INTO", MatchAny, "("))
    3294           0 :         COMPLETE_WITH_ATTR(prev2_wd, "");
    3295             : 
    3296             :     /*
    3297             :      * Complete INSERT INTO <table> with "(" or "VALUES" or "SELECT" or
    3298             :      * "TABLE" or "DEFAULT VALUES" or "OVERRIDING"
    3299             :      */
    3300          14 :     else if (TailMatches("INSERT", "INTO", MatchAny))
    3301           0 :         COMPLETE_WITH("(", "DEFAULT VALUES", "SELECT", "TABLE", "VALUES", "OVERRIDING");
    3302             : 
    3303             :     /*
    3304             :      * Complete INSERT INTO <table> (attribs) with "VALUES" or "SELECT" or
    3305             :      * "TABLE" or "OVERRIDING"
    3306             :      */
    3307          14 :     else if (TailMatches("INSERT", "INTO", MatchAny, MatchAny) &&
    3308           0 :              ends_with(prev_wd, ')'))
    3309           0 :         COMPLETE_WITH("SELECT", "TABLE", "VALUES", "OVERRIDING");
    3310             : 
    3311             :     /* Complete OVERRIDING */
    3312          14 :     else if (TailMatches("OVERRIDING"))
    3313           0 :         COMPLETE_WITH("SYSTEM VALUE", "USER VALUE");
    3314             : 
    3315             :     /* Complete after OVERRIDING clause */
    3316          14 :     else if (TailMatches("OVERRIDING", MatchAny, "VALUE"))
    3317           0 :         COMPLETE_WITH("SELECT", "TABLE", "VALUES");
    3318             : 
    3319             :     /* Insert an open parenthesis after "VALUES" */
    3320          14 :     else if (TailMatches("VALUES") && !TailMatches("DEFAULT", "VALUES"))
    3321           0 :         COMPLETE_WITH("(");
    3322             : 
    3323             : /* LOCK */
    3324             :     /* Complete LOCK [TABLE] with a list of tables */
    3325          14 :     else if (Matches("LOCK"))
    3326           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables,
    3327             :                                    " UNION SELECT 'TABLE'");
    3328          14 :     else if (Matches("LOCK", "TABLE"))
    3329           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, "");
    3330             : 
    3331             :     /* For the following, handle the case of a single table only for now */
    3332             : 
    3333             :     /* Complete LOCK [TABLE] <table> with "IN" */
    3334          28 :     else if (Matches("LOCK", MatchAnyExcept("TABLE")) ||
    3335          14 :              Matches("LOCK", "TABLE", MatchAny))
    3336           0 :         COMPLETE_WITH("IN");
    3337             : 
    3338             :     /* Complete LOCK [TABLE] <table> IN with a lock mode */
    3339          28 :     else if (Matches("LOCK", MatchAny, "IN") ||
    3340          14 :              Matches("LOCK", "TABLE", MatchAny, "IN"))
    3341           0 :         COMPLETE_WITH("ACCESS SHARE MODE",
    3342             :                       "ROW SHARE MODE", "ROW EXCLUSIVE MODE",
    3343             :                       "SHARE UPDATE EXCLUSIVE MODE", "SHARE MODE",
    3344             :                       "SHARE ROW EXCLUSIVE MODE",
    3345             :                       "EXCLUSIVE MODE", "ACCESS EXCLUSIVE MODE");
    3346             : 
    3347             :     /* Complete LOCK [TABLE] <table> IN ACCESS|ROW with rest of lock mode */
    3348          28 :     else if (Matches("LOCK", MatchAny, "IN", "ACCESS|ROW") ||
    3349          14 :              Matches("LOCK", "TABLE", MatchAny, "IN", "ACCESS|ROW"))
    3350           0 :         COMPLETE_WITH("EXCLUSIVE MODE", "SHARE MODE");
    3351             : 
    3352             :     /* Complete LOCK [TABLE] <table> IN SHARE with rest of lock mode */
    3353          28 :     else if (Matches("LOCK", MatchAny, "IN", "SHARE") ||
    3354          14 :              Matches("LOCK", "TABLE", MatchAny, "IN", "SHARE"))
    3355           0 :         COMPLETE_WITH("MODE", "ROW EXCLUSIVE MODE",
    3356             :                       "UPDATE EXCLUSIVE MODE");
    3357             : 
    3358             : /* NOTIFY --- can be inside EXPLAIN, RULE, etc */
    3359          14 :     else if (TailMatches("NOTIFY"))
    3360           0 :         COMPLETE_WITH_QUERY("SELECT pg_catalog.quote_ident(channel) FROM pg_catalog.pg_listening_channels() AS channel WHERE substring(pg_catalog.quote_ident(channel),1,%d)='%s'");
    3361             : 
    3362             : /* OPTIONS */
    3363          14 :     else if (TailMatches("OPTIONS"))
    3364           0 :         COMPLETE_WITH("(");
    3365             : 
    3366             : /* OWNER TO  - complete with available roles */
    3367          14 :     else if (TailMatches("OWNER", "TO"))
    3368           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_roles);
    3369             : 
    3370             : /* ORDER BY */
    3371          14 :     else if (TailMatches("FROM", MatchAny, "ORDER"))
    3372           0 :         COMPLETE_WITH("BY");
    3373          14 :     else if (TailMatches("FROM", MatchAny, "ORDER", "BY"))
    3374           0 :         COMPLETE_WITH_ATTR(prev3_wd, "");
    3375             : 
    3376             : /* PREPARE xx AS */
    3377          14 :     else if (Matches("PREPARE", MatchAny, "AS"))
    3378           0 :         COMPLETE_WITH("SELECT", "UPDATE", "INSERT", "DELETE FROM");
    3379             : 
    3380             : /*
    3381             :  * PREPARE TRANSACTION is missing on purpose. It's intended for transaction
    3382             :  * managers, not for manual use in interactive sessions.
    3383             :  */
    3384             : 
    3385             : /* REASSIGN OWNED BY xxx TO yyy */
    3386          14 :     else if (Matches("REASSIGN"))
    3387           0 :         COMPLETE_WITH("OWNED BY");
    3388          14 :     else if (Matches("REASSIGN", "OWNED"))
    3389           0 :         COMPLETE_WITH("BY");
    3390          14 :     else if (Matches("REASSIGN", "OWNED", "BY"))
    3391           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_roles);
    3392          14 :     else if (Matches("REASSIGN", "OWNED", "BY", MatchAny))
    3393           0 :         COMPLETE_WITH("TO");
    3394          14 :     else if (Matches("REASSIGN", "OWNED", "BY", MatchAny, "TO"))
    3395           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_roles);
    3396             : 
    3397             : /* REFRESH MATERIALIZED VIEW */
    3398          14 :     else if (Matches("REFRESH"))
    3399           0 :         COMPLETE_WITH("MATERIALIZED VIEW");
    3400          14 :     else if (Matches("REFRESH", "MATERIALIZED"))
    3401           0 :         COMPLETE_WITH("VIEW");
    3402          14 :     else if (Matches("REFRESH", "MATERIALIZED", "VIEW"))
    3403           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_matviews,
    3404             :                                    " UNION SELECT 'CONCURRENTLY'");
    3405          14 :     else if (Matches("REFRESH", "MATERIALIZED", "VIEW", "CONCURRENTLY"))
    3406           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_matviews, NULL);
    3407          14 :     else if (Matches("REFRESH", "MATERIALIZED", "VIEW", MatchAny))
    3408           0 :         COMPLETE_WITH("WITH");
    3409          14 :     else if (Matches("REFRESH", "MATERIALIZED", "VIEW", "CONCURRENTLY", MatchAny))
    3410           0 :         COMPLETE_WITH("WITH");
    3411          14 :     else if (Matches("REFRESH", "MATERIALIZED", "VIEW", MatchAny, "WITH"))
    3412           0 :         COMPLETE_WITH("NO DATA", "DATA");
    3413          14 :     else if (Matches("REFRESH", "MATERIALIZED", "VIEW", "CONCURRENTLY", MatchAny, "WITH"))
    3414           0 :         COMPLETE_WITH("NO DATA", "DATA");
    3415          14 :     else if (Matches("REFRESH", "MATERIALIZED", "VIEW", MatchAny, "WITH", "NO"))
    3416           0 :         COMPLETE_WITH("DATA");
    3417          14 :     else if (Matches("REFRESH", "MATERIALIZED", "VIEW", "CONCURRENTLY", MatchAny, "WITH", "NO"))
    3418           0 :         COMPLETE_WITH("DATA");
    3419             : 
    3420             : /* REINDEX */
    3421          14 :     else if (Matches("REINDEX"))
    3422           0 :         COMPLETE_WITH("TABLE", "INDEX", "SYSTEM", "SCHEMA", "DATABASE");
    3423          14 :     else if (Matches("REINDEX", "TABLE"))
    3424           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexables,
    3425             :                                    " UNION SELECT 'CONCURRENTLY'");
    3426          14 :     else if (Matches("REINDEX", "INDEX"))
    3427           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexes,
    3428             :                                    " UNION SELECT 'CONCURRENTLY'");
    3429          14 :     else if (Matches("REINDEX", "SCHEMA"))
    3430           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_schemas
    3431             :                             " UNION SELECT 'CONCURRENTLY'");
    3432          14 :     else if (Matches("REINDEX", "SYSTEM|DATABASE"))
    3433           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_databases
    3434             :                             " UNION SELECT 'CONCURRENTLY'");
    3435          14 :     else if (Matches("REINDEX", "TABLE", "CONCURRENTLY"))
    3436           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexables, NULL);
    3437          14 :     else if (Matches("REINDEX", "INDEX", "CONCURRENTLY"))
    3438           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexes, NULL);
    3439          14 :     else if (Matches("REINDEX", "SCHEMA", "CONCURRENTLY"))
    3440           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_schemas);
    3441          14 :     else if (Matches("REINDEX", "SYSTEM|DATABASE", "CONCURRENTLY"))
    3442           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_databases);
    3443             : 
    3444             : /* SECURITY LABEL */
    3445          14 :     else if (Matches("SECURITY"))
    3446           0 :         COMPLETE_WITH("LABEL");
    3447          14 :     else if (Matches("SECURITY", "LABEL"))
    3448           0 :         COMPLETE_WITH("ON", "FOR");
    3449          14 :     else if (Matches("SECURITY", "LABEL", "FOR", MatchAny))
    3450           0 :         COMPLETE_WITH("ON");
    3451          28 :     else if (Matches("SECURITY", "LABEL", "ON") ||
    3452          14 :              Matches("SECURITY", "LABEL", "FOR", MatchAny, "ON"))
    3453           0 :         COMPLETE_WITH("TABLE", "COLUMN", "AGGREGATE", "DATABASE", "DOMAIN",
    3454             :                       "EVENT TRIGGER", "FOREIGN TABLE", "FUNCTION",
    3455             :                       "LARGE OBJECT", "MATERIALIZED VIEW", "LANGUAGE",
    3456             :                       "PUBLICATION", "PROCEDURE", "ROLE", "ROUTINE", "SCHEMA",
    3457             :                       "SEQUENCE", "SUBSCRIPTION", "TABLESPACE", "TYPE", "VIEW");
    3458          14 :     else if (Matches("SECURITY", "LABEL", "ON", MatchAny, MatchAny))
    3459           0 :         COMPLETE_WITH("IS");
    3460             : 
    3461             : /* SELECT */
    3462             :     /* naah . . . */
    3463             : 
    3464             : /* SET, RESET, SHOW */
    3465             :     /* Complete with a variable name */
    3466          14 :     else if (TailMatches("SET|RESET") && !TailMatches("UPDATE", MatchAny, "SET"))
    3467           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_set_vars);
    3468          14 :     else if (Matches("SHOW"))
    3469           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_show_vars);
    3470             :     /* Complete "SET TRANSACTION" */
    3471          14 :     else if (Matches("SET", "TRANSACTION"))
    3472           0 :         COMPLETE_WITH("SNAPSHOT", "ISOLATION LEVEL", "READ", "DEFERRABLE", "NOT DEFERRABLE");
    3473          28 :     else if (Matches("BEGIN|START", "TRANSACTION") ||
    3474          28 :              Matches("BEGIN", "WORK") ||
    3475          28 :              Matches("BEGIN") ||
    3476          14 :              Matches("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION"))
    3477           0 :         COMPLETE_WITH("ISOLATION LEVEL", "READ", "DEFERRABLE", "NOT DEFERRABLE");
    3478          28 :     else if (Matches("SET|BEGIN|START", "TRANSACTION|WORK", "NOT") ||
    3479          28 :              Matches("BEGIN", "NOT") ||
    3480          14 :              Matches("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "NOT"))
    3481           0 :         COMPLETE_WITH("DEFERRABLE");
    3482          28 :     else if (Matches("SET|BEGIN|START", "TRANSACTION|WORK", "ISOLATION") ||
    3483          28 :              Matches("BEGIN", "ISOLATION") ||
    3484          14 :              Matches("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "ISOLATION"))
    3485           0 :         COMPLETE_WITH("LEVEL");
    3486          28 :     else if (Matches("SET|BEGIN|START", "TRANSACTION|WORK", "ISOLATION", "LEVEL") ||
    3487          28 :              Matches("BEGIN", "ISOLATION", "LEVEL") ||
    3488          14 :              Matches("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "ISOLATION", "LEVEL"))
    3489           0 :         COMPLETE_WITH("READ", "REPEATABLE READ", "SERIALIZABLE");
    3490          28 :     else if (Matches("SET|BEGIN|START", "TRANSACTION|WORK", "ISOLATION", "LEVEL", "READ") ||
    3491          28 :              Matches("BEGIN", "ISOLATION", "LEVEL", "READ") ||
    3492          14 :              Matches("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "ISOLATION", "LEVEL", "READ"))
    3493           0 :         COMPLETE_WITH("UNCOMMITTED", "COMMITTED");
    3494          28 :     else if (Matches("SET|BEGIN|START", "TRANSACTION|WORK", "ISOLATION", "LEVEL", "REPEATABLE") ||
    3495          28 :              Matches("BEGIN", "ISOLATION", "LEVEL", "REPEATABLE") ||
    3496          14 :              Matches("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "ISOLATION", "LEVEL", "REPEATABLE"))
    3497           0 :         COMPLETE_WITH("READ");
    3498          28 :     else if (Matches("SET|BEGIN|START", "TRANSACTION|WORK", "READ") ||
    3499          28 :              Matches("BEGIN", "READ") ||
    3500          14 :              Matches("SET", "SESSION", "CHARACTERISTICS", "AS", "TRANSACTION", "READ"))
    3501           0 :         COMPLETE_WITH("ONLY", "WRITE");
    3502             :     /* SET CONSTRAINTS */
    3503          14 :     else if (Matches("SET", "CONSTRAINTS"))
    3504           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_constraints_with_schema, "UNION SELECT 'ALL'");
    3505             :     /* Complete SET CONSTRAINTS <foo> with DEFERRED|IMMEDIATE */
    3506          14 :     else if (Matches("SET", "CONSTRAINTS", MatchAny))
    3507           0 :         COMPLETE_WITH("DEFERRED", "IMMEDIATE");
    3508             :     /* Complete SET ROLE */
    3509          14 :     else if (Matches("SET", "ROLE"))
    3510           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_roles);
    3511             :     /* Complete SET SESSION with AUTHORIZATION or CHARACTERISTICS... */
    3512          14 :     else if (Matches("SET", "SESSION"))
    3513           0 :         COMPLETE_WITH("AUTHORIZATION", "CHARACTERISTICS AS TRANSACTION");
    3514             :     /* Complete SET SESSION AUTHORIZATION with username */
    3515          14 :     else if (Matches("SET", "SESSION", "AUTHORIZATION"))
    3516           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_roles " UNION SELECT 'DEFAULT'");
    3517             :     /* Complete RESET SESSION with AUTHORIZATION */
    3518          14 :     else if (Matches("RESET", "SESSION"))
    3519           0 :         COMPLETE_WITH("AUTHORIZATION");
    3520             :     /* Complete SET <var> with "TO" */
    3521          14 :     else if (Matches("SET", MatchAny))
    3522           0 :         COMPLETE_WITH("TO");
    3523             : 
    3524             :     /*
    3525             :      * Complete ALTER DATABASE|FUNCTION||PROCEDURE|ROLE|ROUTINE|USER ... SET
    3526             :      * <name>
    3527             :      */
    3528          14 :     else if (HeadMatches("ALTER", "DATABASE|FUNCTION|PROCEDURE|ROLE|ROUTINE|USER") &&
    3529           0 :              TailMatches("SET", MatchAny))
    3530           0 :         COMPLETE_WITH("FROM CURRENT", "TO");
    3531             : 
    3532             :     /*
    3533             :      * Suggest possible variable values in SET variable TO|=, along with the
    3534             :      * preceding ALTER syntaxes.
    3535             :      */
    3536          14 :     else if (TailMatches("SET", MatchAny, "TO|=") &&
    3537           0 :              !TailMatches("UPDATE", MatchAny, "SET", MatchAny, "TO|="))
    3538             :     {
    3539             :         /* special cased code for individual GUCs */
    3540           0 :         if (TailMatches("DateStyle", "TO|="))
    3541           0 :             COMPLETE_WITH("ISO", "SQL", "Postgres", "German",
    3542             :                           "YMD", "DMY", "MDY",
    3543             :                           "US", "European", "NonEuropean",
    3544             :                           "DEFAULT");
    3545           0 :         else if (TailMatches("search_path", "TO|="))
    3546           0 :             COMPLETE_WITH_QUERY(Query_for_list_of_schemas
    3547             :                                 " AND nspname not like 'pg\\_toast%%' "
    3548             :                                 " AND nspname not like 'pg\\_temp%%' "
    3549             :                                 " UNION SELECT 'DEFAULT' ");
    3550             :         else
    3551             :         {
    3552             :             /* generic, type based, GUC support */
    3553           0 :             char       *guctype = get_guctype(prev2_wd);
    3554             : 
    3555             :             /*
    3556             :              * Note: if we don't recognize the GUC name, it's important to not
    3557             :              * offer any completions, as most likely we've misinterpreted the
    3558             :              * context and this isn't a GUC-setting command at all.
    3559             :              */
    3560           0 :             if (guctype)
    3561             :             {
    3562           0 :                 if (strcmp(guctype, "enum") == 0)
    3563             :                 {
    3564             :                     char        querybuf[1024];
    3565             : 
    3566           0 :                     snprintf(querybuf, sizeof(querybuf),
    3567           0 :                              Query_for_enum, prev2_wd);
    3568           0 :                     COMPLETE_WITH_QUERY(querybuf);
    3569             :                 }
    3570           0 :                 else if (strcmp(guctype, "bool") == 0)
    3571           0 :                     COMPLETE_WITH("on", "off", "true", "false", "yes", "no",
    3572             :                                   "1", "0", "DEFAULT");
    3573             :                 else
    3574           0 :                     COMPLETE_WITH("DEFAULT");
    3575             : 
    3576           0 :                 free(guctype);
    3577             :             }
    3578             :         }
    3579             :     }
    3580             : 
    3581             : /* START TRANSACTION */
    3582          14 :     else if (Matches("START"))
    3583           0 :         COMPLETE_WITH("TRANSACTION");
    3584             : 
    3585             : /* TABLE, but not TABLE embedded in other commands */
    3586          14 :     else if (Matches("TABLE"))
    3587           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_selectables, NULL);
    3588             : 
    3589             : /* TABLESAMPLE */
    3590          14 :     else if (TailMatches("TABLESAMPLE"))
    3591           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_tablesample_methods);
    3592          14 :     else if (TailMatches("TABLESAMPLE", MatchAny))
    3593           0 :         COMPLETE_WITH("(");
    3594             : 
    3595             : /* TRUNCATE */
    3596          14 :     else if (Matches("TRUNCATE"))
    3597           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);
    3598             : 
    3599             : /* UNLISTEN */
    3600          14 :     else if (Matches("UNLISTEN"))
    3601           0 :         COMPLETE_WITH_QUERY("SELECT pg_catalog.quote_ident(channel) FROM pg_catalog.pg_listening_channels() AS channel WHERE substring(pg_catalog.quote_ident(channel),1,%d)='%s' UNION SELECT '*'");
    3602             : 
    3603             : /* UPDATE --- can be inside EXPLAIN, RULE, etc */
    3604             :     /* If prev. word is UPDATE suggest a list of tables */
    3605          14 :     else if (TailMatches("UPDATE"))
    3606           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_updatables, NULL);
    3607             :     /* Complete UPDATE <table> with "SET" */
    3608          14 :     else if (TailMatches("UPDATE", MatchAny))
    3609           0 :         COMPLETE_WITH("SET");
    3610             :     /* Complete UPDATE <table> SET with list of attributes */
    3611          14 :     else if (TailMatches("UPDATE", MatchAny, "SET"))
    3612           0 :         COMPLETE_WITH_ATTR(prev2_wd, "");
    3613             :     /* UPDATE <table> SET <attr> = */
    3614          14 :     else if (TailMatches("UPDATE", MatchAny, "SET", MatchAnyExcept("*=")))
    3615           0 :         COMPLETE_WITH("=");
    3616             : 
    3617             : /* USER MAPPING */
    3618          14 :     else if (Matches("ALTER|CREATE|DROP", "USER", "MAPPING"))
    3619           0 :         COMPLETE_WITH("FOR");
    3620          14 :     else if (Matches("CREATE", "USER", "MAPPING", "FOR"))
    3621           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_roles
    3622             :                             " UNION SELECT 'CURRENT_USER'"
    3623             :                             " UNION SELECT 'PUBLIC'"
    3624             :                             " UNION SELECT 'USER'");
    3625          14 :     else if (Matches("ALTER|DROP", "USER", "MAPPING", "FOR"))
    3626           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_user_mappings);
    3627          14 :     else if (Matches("CREATE|ALTER|DROP", "USER", "MAPPING", "FOR", MatchAny))
    3628           0 :         COMPLETE_WITH("SERVER");
    3629          14 :     else if (Matches("CREATE|ALTER", "USER", "MAPPING", "FOR", MatchAny, "SERVER", MatchAny))
    3630           0 :         COMPLETE_WITH("OPTIONS");
    3631             : 
    3632             : /*
    3633             :  * VACUUM [ ( option [, ...] ) ] [ table_and_columns [, ...] ]
    3634             :  * VACUUM [ FULL ] [ FREEZE ] [ VERBOSE ] [ ANALYZE ] [ table_and_columns [, ...] ]
    3635             :  */
    3636          14 :     else if (Matches("VACUUM"))
    3637           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_vacuumables,
    3638             :                                    " UNION SELECT 'FULL'"
    3639             :                                    " UNION SELECT 'FREEZE'"
    3640             :                                    " UNION SELECT 'ANALYZE'"
    3641             :                                    " UNION SELECT 'VERBOSE'");
    3642          14 :     else if (Matches("VACUUM", "FULL"))
    3643           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_vacuumables,
    3644             :                                    " UNION SELECT 'FREEZE'"
    3645             :                                    " UNION SELECT 'ANALYZE'"
    3646             :                                    " UNION SELECT 'VERBOSE'");
    3647          28 :     else if (Matches("VACUUM", "FREEZE") ||
    3648          14 :              Matches("VACUUM", "FULL", "FREEZE"))
    3649           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_vacuumables,
    3650             :                                    " UNION SELECT 'VERBOSE'"
    3651             :                                    " UNION SELECT 'ANALYZE'");
    3652          28 :     else if (Matches("VACUUM", "VERBOSE") ||
    3653          28 :              Matches("VACUUM", "FULL|FREEZE", "VERBOSE") ||
    3654          14 :              Matches("VACUUM", "FULL", "FREEZE", "VERBOSE"))
    3655           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_vacuumables,
    3656             :                                    " UNION SELECT 'ANALYZE'");
    3657          14 :     else if (HeadMatches("VACUUM", "(*") &&
    3658           0 :              !HeadMatches("VACUUM", "(*)"))
    3659             :     {
    3660             :         /*
    3661             :          * This fires if we're in an unfinished parenthesized option list.
    3662             :          * get_previous_words treats a completed parenthesized option list as
    3663             :          * one word, so the above test is correct.
    3664             :          */
    3665           0 :         if (ends_with(prev_wd, '(') || ends_with(prev_wd, ','))
    3666           0 :             COMPLETE_WITH("FULL", "FREEZE", "ANALYZE", "VERBOSE",
    3667             :                           "DISABLE_PAGE_SKIPPING", "SKIP_LOCKED",
    3668             :                           "INDEX_CLEANUP", "TRUNCATE", "PARALLEL");
    3669           0 :         else if (TailMatches("FULL|FREEZE|ANALYZE|VERBOSE|DISABLE_PAGE_SKIPPING|SKIP_LOCKED|INDEX_CLEANUP|TRUNCATE"))
    3670           0 :             COMPLETE_WITH("ON", "OFF");
    3671             :     }
    3672          14 :     else if (HeadMatches("VACUUM") && TailMatches("("))
    3673             :         /* "VACUUM (" should be caught above, so assume we want columns */
    3674           0 :         COMPLETE_WITH_ATTR(prev2_wd, "");
    3675          14 :     else if (HeadMatches("VACUUM"))
    3676           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_vacuumables, NULL);
    3677             : 
    3678             : /* WITH [RECURSIVE] */
    3679             : 
    3680             :     /*
    3681             :      * Only match when WITH is the first word, as WITH may appear in many
    3682             :      * other contexts.
    3683             :      */
    3684          14 :     else if (Matches("WITH"))
    3685           0 :         COMPLETE_WITH("RECURSIVE");
    3686             : 
    3687             : /* WHERE */
    3688             :     /* Simple case of the word before the where being the table name */
    3689          14 :     else if (TailMatches(MatchAny, "WHERE"))
    3690           0 :         COMPLETE_WITH_ATTR(prev2_wd, "");
    3691             : 
    3692             : /* ... FROM ... */
    3693             : /* TODO: also include SRF ? */
    3694          14 :     else if (TailMatches("FROM") && !Matches("COPY|\\copy", MatchAny, "FROM"))
    3695          10 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_selectables, NULL);
    3696             : 
    3697             : /* ... JOIN ... */
    3698           4 :     else if (TailMatches("JOIN"))
    3699           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_selectables, NULL);
    3700             : 
    3701             : /* Backslash commands */
    3702             : /* TODO:  \dc \dd \dl */
    3703           4 :     else if (TailMatchesCS("\\?"))
    3704           0 :         COMPLETE_WITH_CS("commands", "options", "variables");
    3705           4 :     else if (TailMatchesCS("\\connect|\\c"))
    3706             :     {
    3707           0 :         if (!recognized_connection_string(text))
    3708           0 :             COMPLETE_WITH_QUERY(Query_for_list_of_databases);
    3709             :     }
    3710           4 :     else if (TailMatchesCS("\\connect|\\c", MatchAny))
    3711             :     {
    3712           0 :         if (!recognized_connection_string(prev_wd))
    3713           0 :             COMPLETE_WITH_QUERY(Query_for_list_of_roles);
    3714             :     }
    3715           4 :     else if (TailMatchesCS("\\da*"))
    3716           0 :         COMPLETE_WITH_VERSIONED_SCHEMA_QUERY(Query_for_list_of_aggregates, NULL);
    3717           8 :     else if (TailMatchesCS("\\dAc*", MatchAny) ||
    3718           4 :              TailMatchesCS("\\dAf*", MatchAny))
    3719           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_datatypes, NULL);
    3720           8 :     else if (TailMatchesCS("\\dAo*", MatchAny) ||
    3721           4 :              TailMatchesCS("\\dAp*", MatchAny))
    3722           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_operator_families, NULL);
    3723           4 :     else if (TailMatchesCS("\\dA*"))
    3724           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_access_methods);
    3725           4 :     else if (TailMatchesCS("\\db*"))
    3726           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_tablespaces);
    3727           4 :     else if (TailMatchesCS("\\dD*"))
    3728           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_domains, NULL);
    3729           4 :     else if (TailMatchesCS("\\des*"))
    3730           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_servers);
    3731           4 :     else if (TailMatchesCS("\\deu*"))
    3732           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_user_mappings);
    3733           4 :     else if (TailMatchesCS("\\dew*"))
    3734           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_fdws);
    3735           4 :     else if (TailMatchesCS("\\df*"))
    3736           0 :         COMPLETE_WITH_VERSIONED_SCHEMA_QUERY(Query_for_list_of_functions, NULL);
    3737             : 
    3738           4 :     else if (TailMatchesCS("\\dFd*"))
    3739           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_ts_dictionaries);
    3740           4 :     else if (TailMatchesCS("\\dFp*"))
    3741           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_ts_parsers);
    3742           4 :     else if (TailMatchesCS("\\dFt*"))
    3743           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_ts_templates);
    3744             :     /* must be at end of \dF alternatives: */
    3745           4 :     else if (TailMatchesCS("\\dF*"))
    3746           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_ts_configurations);
    3747             : 
    3748           4 :     else if (TailMatchesCS("\\di*"))
    3749           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_indexes, NULL);
    3750           4 :     else if (TailMatchesCS("\\dL*"))
    3751           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_languages);
    3752           4 :     else if (TailMatchesCS("\\dn*"))
    3753           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_schemas);
    3754           4 :     else if (TailMatchesCS("\\dp") || TailMatchesCS("\\z"))
    3755           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_grantables, NULL);
    3756           4 :     else if (TailMatchesCS("\\dPi*"))
    3757           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_partitioned_indexes, NULL);
    3758           4 :     else if (TailMatchesCS("\\dPt*"))
    3759           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_partitioned_tables, NULL);
    3760           4 :     else if (TailMatchesCS("\\dP*"))
    3761           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_partitioned_relations, NULL);
    3762           4 :     else if (TailMatchesCS("\\ds*"))
    3763           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_sequences, NULL);
    3764           4 :     else if (TailMatchesCS("\\dt*"))
    3765           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);
    3766           4 :     else if (TailMatchesCS("\\dT*"))
    3767           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_datatypes, NULL);
    3768           4 :     else if (TailMatchesCS("\\du*") || TailMatchesCS("\\dg*"))
    3769           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_roles);
    3770           4 :     else if (TailMatchesCS("\\dv*"))
    3771           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_views, NULL);
    3772           4 :     else if (TailMatchesCS("\\dx*"))
    3773           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_extensions);
    3774           4 :     else if (TailMatchesCS("\\dm*"))
    3775           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_matviews, NULL);
    3776           4 :     else if (TailMatchesCS("\\dE*"))
    3777           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_foreign_tables, NULL);
    3778           4 :     else if (TailMatchesCS("\\dy*"))
    3779           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_event_triggers);
    3780             : 
    3781             :     /* must be at end of \d alternatives: */
    3782           4 :     else if (TailMatchesCS("\\d*"))
    3783           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_relations, NULL);
    3784             : 
    3785           4 :     else if (TailMatchesCS("\\ef"))
    3786           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_routines, NULL);
    3787           4 :     else if (TailMatchesCS("\\ev"))
    3788           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_views, NULL);
    3789             : 
    3790           4 :     else if (TailMatchesCS("\\encoding"))
    3791           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_encodings);
    3792           4 :     else if (TailMatchesCS("\\h|\\help"))
    3793           0 :         COMPLETE_WITH_LIST(sql_commands);
    3794           4 :     else if (TailMatchesCS("\\h|\\help", MatchAny))
    3795             :     {
    3796           0 :         if (TailMatches("DROP"))
    3797           0 :             matches = rl_completion_matches(text, drop_command_generator);
    3798           0 :         else if (TailMatches("ALTER"))
    3799           0 :             matches = rl_completion_matches(text, alter_command_generator);
    3800             : 
    3801             :         /*
    3802             :          * CREATE is recognized by tail match elsewhere, so doesn't need to be
    3803             :          * repeated here
    3804             :          */
    3805             :     }
    3806           4 :     else if (TailMatchesCS("\\h|\\help", MatchAny, MatchAny))
    3807             :     {
    3808           0 :         if (TailMatches("CREATE|DROP", "ACCESS"))
    3809           0 :             COMPLETE_WITH("METHOD");
    3810           0 :         else if (TailMatches("ALTER", "DEFAULT"))
    3811           0 :             COMPLETE_WITH("PRIVILEGES");
    3812           0 :         else if (TailMatches("CREATE|ALTER|DROP", "EVENT"))
    3813           0 :             COMPLETE_WITH("TRIGGER");
    3814           0 :         else if (TailMatches("CREATE|ALTER|DROP", "FOREIGN"))
    3815           0 :             COMPLETE_WITH("DATA WRAPPER", "TABLE");
    3816           0 :         else if (TailMatches("ALTER", "LARGE"))
    3817           0 :             COMPLETE_WITH("OBJECT");
    3818           0 :         else if (TailMatches("CREATE|ALTER|DROP", "MATERIALIZED"))
    3819           0 :             COMPLETE_WITH("VIEW");
    3820           0 :         else if (TailMatches("CREATE|ALTER|DROP", "TEXT"))
    3821           0 :             COMPLETE_WITH("SEARCH");
    3822           0 :         else if (TailMatches("CREATE|ALTER|DROP", "USER"))
    3823           0 :             COMPLETE_WITH("MAPPING FOR");
    3824             :     }
    3825           4 :     else if (TailMatchesCS("\\h|\\help", MatchAny, MatchAny, MatchAny))
    3826             :     {
    3827           0 :         if (TailMatches("CREATE|ALTER|DROP", "FOREIGN", "DATA"))
    3828           0 :             COMPLETE_WITH("WRAPPER");
    3829           0 :         else if (TailMatches("CREATE|ALTER|DROP", "TEXT", "SEARCH"))
    3830           0 :             COMPLETE_WITH("CONFIGURATION", "DICTIONARY", "PARSER", "TEMPLATE");
    3831           0 :         else if (TailMatches("CREATE|ALTER|DROP", "USER", "MAPPING"))
    3832           0 :             COMPLETE_WITH("FOR");
    3833             :     }
    3834           4 :     else if (TailMatchesCS("\\l*") && !TailMatchesCS("\\lo*"))
    3835           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_databases);
    3836           4 :     else if (TailMatchesCS("\\password"))
    3837           0 :         COMPLETE_WITH_QUERY(Query_for_list_of_roles);
    3838           4 :     else if (TailMatchesCS("\\pset"))
    3839           0 :         COMPLETE_WITH_CS("border", "columns", "csv_fieldsep", "expanded",
    3840             :                          "fieldsep", "fieldsep_zero", "footer", "format",
    3841             :                          "linestyle", "null", "numericlocale",
    3842             :                          "pager", "pager_min_lines",
    3843             :                          "recordsep", "recordsep_zero",
    3844             :                          "tableattr", "title", "tuples_only",
    3845             :                          "unicode_border_linestyle",
    3846             :                          "unicode_column_linestyle",
    3847             :                          "unicode_header_linestyle");
    3848           4 :     else if (TailMatchesCS("\\pset", MatchAny))
    3849             :     {
    3850           0 :         if (TailMatchesCS("format"))
    3851           0 :             COMPLETE_WITH_CS("aligned", "asciidoc", "csv", "html", "latex",
    3852             :                              "latex-longtable", "troff-ms", "unaligned",
    3853             :                              "wrapped");
    3854           0 :         else if (TailMatchesCS("linestyle"))
    3855           0 :             COMPLETE_WITH_CS("ascii", "old-ascii", "unicode");
    3856           0 :         else if (TailMatchesCS("pager"))
    3857           0 :             COMPLETE_WITH_CS("on", "off", "always");
    3858           0 :         else if (TailMatchesCS("unicode_border_linestyle|"
    3859             :                                "unicode_column_linestyle|"
    3860             :                                "unicode_header_linestyle"))
    3861           0 :             COMPLETE_WITH_CS("single", "double");
    3862             :     }
    3863           4 :     else if (TailMatchesCS("\\unset"))
    3864           0 :         matches = complete_from_variables(text, "", "", true);
    3865           4 :     else if (TailMatchesCS("\\set"))
    3866           0 :         matches = complete_from_variables(text, "", "", false);
    3867           4 :     else if (TailMatchesCS("\\set", MatchAny))
    3868             :     {
    3869           0 :         if (TailMatchesCS("AUTOCOMMIT|ON_ERROR_STOP|QUIET|"
    3870             :                           "SINGLELINE|SINGLESTEP"))
    3871           0 :             COMPLETE_WITH_CS("on", "off");
    3872           0 :         else if (TailMatchesCS("COMP_KEYWORD_CASE"))
    3873           0 :             COMPLETE_WITH_CS("lower", "upper",
    3874             :                              "preserve-lower", "preserve-upper");
    3875           0 :         else if (TailMatchesCS("ECHO"))
    3876           0 :             COMPLETE_WITH_CS("errors", "queries", "all", "none");
    3877           0 :         else if (TailMatchesCS("ECHO_HIDDEN"))
    3878           0 :             COMPLETE_WITH_CS("noexec", "off", "on");
    3879           0 :         else if (TailMatchesCS("HISTCONTROL"))
    3880           0 :             COMPLETE_WITH_CS("ignorespace", "ignoredups",
    3881             :                              "ignoreboth", "none");
    3882           0 :         else if (TailMatchesCS("ON_ERROR_ROLLBACK"))
    3883           0 :             COMPLETE_WITH_CS("on", "off", "interactive");
    3884           0 :         else if (TailMatchesCS("SHOW_CONTEXT"))
    3885           0 :             COMPLETE_WITH_CS("never", "errors", "always");
    3886           0 :         else if (TailMatchesCS("VERBOSITY"))
    3887           0 :             COMPLETE_WITH_CS("default", "verbose", "terse", "sqlstate");
    3888             :     }
    3889           4 :     else if (TailMatchesCS("\\sf*"))
    3890           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_routines, NULL);
    3891           4 :     else if (TailMatchesCS("\\sv*"))
    3892           0 :         COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_views, NULL);
    3893           4 :     else if (TailMatchesCS("\\cd|\\e|\\edit|\\g|\\gx|\\i|\\include|"
    3894             :                            "\\ir|\\include_relative|\\o|\\out|"
    3895             :                            "\\s|\\w|\\write|\\lo_import"))
    3896             :     {
    3897           4 :         completion_charp = "\\";
    3898           4 :         completion_force_quote = false;
    3899           4 :         matches = rl_completion_matches(text, complete_from_files);
    3900             :     }
    3901             : 
    3902             :     /*
    3903             :      * Finally, we look through the list of "things", such as TABLE, INDEX and
    3904             :      * check if that was the previous word. If so, execute the query to get a
    3905             :      * list of them.
    3906             :      */
    3907             :     else
    3908             :     {
    3909             :         int         i;
    3910             : 
    3911           0 :         for (i = 0; words_after_create[i].name; i++)
    3912             :         {
    3913           0 :             if (pg_strcasecmp(prev_wd, words_after_create[i].name) == 0)
    3914             :             {
    3915           0 :                 if (words_after_create[i].query)
    3916           0 :                     COMPLETE_WITH_QUERY(words_after_create[i].query);
    3917           0 :                 else if (words_after_create[i].vquery)
    3918           0 :                     COMPLETE_WITH_VERSIONED_QUERY(words_after_create[i].vquery);
    3919           0 :                 else if (words_after_create[i].squery)
    3920           0 :                     COMPLETE_WITH_VERSIONED_SCHEMA_QUERY(words_after_create[i].squery,
    3921             :                                                          NULL);
    3922           0 :                 break;
    3923             :             }
    3924             :         }
    3925             :     }
    3926             : 
    3927             :     /*
    3928             :      * If we still don't have anything to match we have to fabricate some sort
    3929             :      * of default list. If we were to just return NULL, readline automatically
    3930             :      * attempts filename completion, and that's usually no good.
    3931             :      */
    3932          28 :     if (matches == NULL)
    3933             :     {
    3934           0 :         COMPLETE_WITH_CONST(true, "");
    3935             : #ifdef HAVE_RL_COMPLETION_APPEND_CHARACTER
    3936           0 :         rl_completion_append_character = '\0';
    3937             : #endif
    3938             :     }
    3939             : 
    3940             :     /* free storage */
    3941          28 :     free(previous_words);
    3942          28 :     free(words_buffer);
    3943          28 :     free(text_copy);
    3944             : 
    3945             :     /* Return our Grand List O' Matches */
    3946          28 :     return matches;
    3947             : }
    3948             : 
    3949             : 
    3950             : /*
    3951             :  * GENERATOR FUNCTIONS
    3952             :  *
    3953             :  * These functions do all the actual work of completing the input. They get
    3954             :  * passed the text so far and the count how many times they have been called
    3955             :  * so far with the same text.
    3956             :  * If you read the above carefully, you'll see that these don't get called
    3957             :  * directly but through the readline interface.
    3958             :  * The return value is expected to be the full completion of the text, going
    3959             :  * through a list each time, or NULL if there are no more matches. The string
    3960             :  * will be free()'d by readline, so you must run it through strdup() or
    3961             :  * something of that sort.
    3962             :  */
    3963             : 
    3964             : /*
    3965             :  * Common routine for create_command_generator and drop_command_generator.
    3966             :  * Entries that have 'excluded' flags are not returned.
    3967             :  */
    3968             : static char *
    3969           0 : create_or_drop_command_generator(const char *text, int state, bits32 excluded)
    3970             : {
    3971             :     static int  list_index,
    3972             :                 string_length;
    3973             :     const char *name;
    3974             : 
    3975             :     /* If this is the first time for this completion, init some values */
    3976           0 :     if (state == 0)
    3977             :     {
    3978           0 :         list_index = 0;
    3979           0 :         string_length = strlen(text);
    3980             :     }
    3981             : 
    3982             :     /* find something that matches */
    3983           0 :     while ((name = words_after_create[list_index++].name))
    3984             :     {
    3985           0 :         if ((pg_strncasecmp(name, text, string_length) == 0) &&
    3986           0 :             !(words_after_create[list_index - 1].flags & excluded))
    3987           0 :             return pg_strdup_keyword_case(name, text);
    3988             :     }
    3989             :     /* if nothing matches, return NULL */
    3990           0 :     return NULL;
    3991             : }
    3992             : 
    3993             : /*
    3994             :  * This one gives you one from a list of things you can put after CREATE
    3995             :  * as defined above.
    3996             :  */
    3997             : static char *
    3998           0 : create_command_generator(const char *text, int state)
    3999             : {
    4000           0 :     return create_or_drop_command_generator(text, state, THING_NO_CREATE);
    4001             : }
    4002             : 
    4003             : /*
    4004             :  * This function gives you a list of things you can put after a DROP command.
    4005             :  */
    4006             : static char *
    4007           0 : drop_command_generator(const char *text, int state)
    4008             : {
    4009           0 :     return create_or_drop_command_generator(text, state, THING_NO_DROP);
    4010             : }
    4011             : 
    4012             : /*
    4013             :  * This function gives you a list of things you can put after an ALTER command.
    4014             :  */
    4015             : static char *
    4016           0 : alter_command_generator(const char *text, int state)
    4017             : {
    4018           0 :     return create_or_drop_command_generator(text, state, THING_NO_ALTER);
    4019             : }
    4020             : 
    4021             : /*
    4022             :  * These functions generate lists using server queries.
    4023             :  * They are all wrappers for _complete_from_query.
    4024             :  */
    4025             : 
    4026             : static char *
    4027           0 : complete_from_query(const char *text, int state)
    4028             : {
    4029             :     /* query is assumed to work for any server version */
    4030           0 :     return _complete_from_query(completion_charp, NULL, text, state);
    4031             : }
    4032             : 
    4033             : static char *
    4034           0 : complete_from_versioned_query(const char *text, int state)
    4035             : {
    4036           0 :     const VersionedQuery *vquery = completion_vquery;
    4037             : 
    4038             :     /* Find appropriate array element */
    4039           0 :     while (pset.sversion < vquery->min_server_version)
    4040           0 :         vquery++;
    4041             :     /* Fail completion if server is too old */
    4042           0 :     if (vquery->query == NULL)
    4043           0 :         return NULL;
    4044             : 
    4045           0 :     return _complete_from_query(vquery->query, NULL, text, state);
    4046             : }
    4047             : 
    4048             : static char *
    4049          26 : complete_from_schema_query(const char *text, int state)
    4050             : {
    4051             :     /* query is assumed to work for any server version */
    4052          26 :     return _complete_from_query(completion_charp, completion_squery,
    4053             :                                 text, state);
    4054             : }
    4055             : 
    4056             : static char *
    4057           0 : complete_from_versioned_schema_query(const char *text, int state)
    4058             : {
    4059           0 :     const SchemaQuery *squery = completion_squery;
    4060           0 :     const VersionedQuery *vquery = completion_vquery;
    4061             : 
    4062             :     /* Find appropriate array element */
    4063           0 :     while (pset.sversion < squery->min_server_version)
    4064           0 :         squery++;
    4065             :     /* Fail completion if server is too old */
    4066           0 :     if (squery->catname == NULL)
    4067           0 :         return NULL;
    4068             : 
    4069             :     /* Likewise for the add-on text, if any */
    4070           0 :     if (vquery)
    4071             :     {
    4072           0 :         while (pset.sversion < vquery->min_server_version)
    4073           0 :             vquery++;
    4074           0 :         if (vquery->query == NULL)
    4075           0 :             return NULL;
    4076             :     }
    4077             : 
    4078           0 :     return _complete_from_query(vquery ? vquery->query : NULL,
    4079             :                                 squery, text, state);
    4080             : }
    4081             : 
    4082             : 
    4083             : /*
    4084             :  * This creates a list of matching things, according to a query described by
    4085             :  * the initial arguments.  The caller has already done any work needed to
    4086             :  * select the appropriate query for the server's version.
    4087             :  *
    4088             :  * The query can be one of two kinds:
    4089             :  *
    4090             :  * 1. A simple query which must contain a %d and a %s, which will be replaced
    4091             :  * by the string length of the text and the text itself. The query may also
    4092             :  * have up to four more %s in it; the first two such will be replaced by the
    4093             :  * value of completion_info_charp, the next two by the value of
    4094             :  * completion_info_charp2.
    4095             :  *
    4096             :  * 2. A schema query used for completion of both schema and relation names.
    4097             :  * These are more complex and must contain in the following order:
    4098             :  * %d %s %d %s %d %s %s %d %s
    4099             :  * where %d is the string length of the text and %s the text itself.
    4100             :  *
    4101             :  * If both simple_query and schema_query are non-NULL, then we construct
    4102             :  * a schema query and append the (uninterpreted) string simple_query to it.
    4103             :  *
    4104             :  * It is assumed that strings should be escaped to become SQL literals
    4105             :  * (that is, what is in the query is actually ... '%s' ...)
    4106             :  *
    4107             :  * See top of file for examples of both kinds of query.
    4108             :  *
    4109             :  * "text" and "state" are supplied by readline.
    4110             :  */
    4111             : static char *
    4112          26 : _complete_from_query(const char *simple_query,
    4113             :                      const SchemaQuery *schema_query,
    4114             :                      const char *text, int state)
    4115             : {
    4116             :     static int  list_index,
    4117             :                 byte_length;
    4118             :     static PGresult *result = NULL;
    4119             : 
    4120             :     /*
    4121             :      * If this is the first time for this completion, we fetch a list of our
    4122             :      * "things" from the backend.
    4123             :      */
    4124          26 :     if (state == 0)
    4125             :     {
    4126             :         PQExpBufferData query_buffer;
    4127             :         char       *e_text;
    4128             :         char       *e_info_charp;
    4129             :         char       *e_info_charp2;
    4130          10 :         const char *pstr = text;
    4131          10 :         int         char_length = 0;
    4132             : 
    4133          10 :         list_index = 0;
    4134          10 :         byte_length = strlen(text);
    4135             : 
    4136             :         /*
    4137             :          * Count length as number of characters (not bytes), for passing to
    4138             :          * substring
    4139             :          */
    4140          48 :         while (*pstr)
    4141             :         {
    4142          38 :             char_length++;
    4143          38 :             pstr += PQmblen(pstr, pset.encoding);
    4144             :         }
    4145             : 
    4146             :         /* Free any prior result */
    4147          10 :         PQclear(result);
    4148          10 :         result = NULL;
    4149             : 
    4150             :         /* Set up suitably-escaped copies of textual inputs */
    4151          10 :         e_text = escape_string(text);
    4152             : 
    4153          10 :         if (completion_info_charp)
    4154           0 :             e_info_charp = escape_string(completion_info_charp);
    4155             :         else
    4156          10 :             e_info_charp = NULL;
    4157             : 
    4158          10 :         if (completion_info_charp2)
    4159           0 :             e_info_charp2 = escape_string(completion_info_charp2);
    4160             :         else
    4161          10 :             e_info_charp2 = NULL;
    4162             : 
    4163          10 :         initPQExpBuffer(&query_buffer);
    4164             : 
    4165          10 :         if (schema_query)
    4166             :         {
    4167             :             /* schema_query gives us the pieces to assemble */
    4168          10 :             const char *qualresult = schema_query->qualresult;
    4169             : 
    4170          10 :             if (qualresult == NULL)
    4171          10 :                 qualresult = schema_query->result;
    4172             : 
    4173             :             /* Get unqualified names matching the input-so-far */
    4174          10 :             appendPQExpBuffer(&query_buffer, "SELECT %s FROM %s WHERE ",
    4175             :                               schema_query->result,
    4176             :                               schema_query->catname);
    4177          10 :             if (schema_query->selcondition)
    4178          10 :                 appendPQExpBuffer(&query_buffer, "%s AND ",
    4179             :                                   schema_query->selcondition);
    4180          10 :             appendPQExpBuffer(&query_buffer, "substring(%s,1,%d)='%s'",
    4181             :                               schema_query->result,
    4182             :                               char_length, e_text);
    4183          10 :             appendPQExpBuffer(&query_buffer, " AND %s",
    4184             :                               schema_query->viscondition);
    4185             : 
    4186             :             /*
    4187             :              * When fetching relation names, suppress system catalogs unless
    4188             :              * the input-so-far begins with "pg_".  This is a compromise
    4189             :              * between not offering system catalogs for completion at all, and
    4190             :              * having them swamp the result when the input is just "p".
    4191             :              */
    4192          10 :             if (strcmp(schema_query->catname,
    4193          10 :                        "pg_catalog.pg_class c") == 0 &&
    4194          10 :                 strncmp(text, "pg_", 3) != 0)
    4195             :             {
    4196          10 :                 appendPQExpBufferStr(&query_buffer,
    4197             :                                      " AND c.relnamespace <> (SELECT oid FROM"
    4198             :                                      " pg_catalog.pg_namespace WHERE nspname = 'pg_catalog')");
    4199             :             }
    4200             : 
    4201             :             /*
    4202             :              * Add in matching schema names, but only if there is more than
    4203             :              * one potential match among schema names.
    4204             :              */
    4205          10 :             appendPQExpBuffer(&query_buffer, "\nUNION\n"
    4206             :                               "SELECT pg_catalog.quote_ident(n.nspname) || '.' "
    4207             :                               "FROM pg_catalog.pg_namespace n "
    4208             :                               "WHERE substring(pg_catalog.quote_ident(n.nspname) || '.',1,%d)='%s'",
    4209             :                               char_length, e_text);
    4210          10 :             appendPQExpBuffer(&query_buffer,
    4211             :                               " AND (SELECT pg_catalog.count(*)"
    4212             :                               " FROM pg_catalog.pg_namespace"
    4213             :                               " WHERE substring(pg_catalog.quote_ident(nspname) || '.',1,%d) ="
    4214             :                               " substring('%s',1,pg_catalog.length(pg_catalog.quote_ident(nspname))+1)) > 1",
    4215             :                               char_length, e_text);
    4216             : 
    4217             :             /*
    4218             :              * Add in matching qualified names, but only if there is exactly
    4219             :              * one schema matching the input-so-far.
    4220             :              */
    4221          10 :             appendPQExpBuffer(&query_buffer, "\nUNION\n"
    4222             :                               "SELECT pg_catalog.quote_ident(n.nspname) || '.' || %s "
    4223             :                               "FROM %s, pg_catalog.pg_namespace n "
    4224             :                               "WHERE %s = n.oid AND ",
    4225             :                               qualresult,
    4226             :                               schema_query->catname,
    4227             :                               schema_query->namespace);
    4228          10 :             if (schema_query->selcondition)
    4229          10 :                 appendPQExpBuffer(&query_buffer, "%s AND ",
    4230             :                                   schema_query->selcondition);
    4231          10 :             appendPQExpBuffer(&query_buffer, "substring(pg_catalog.quote_ident(n.nspname) || '.' || %s,1,%d)='%s'",
    4232             :                               qualresult,
    4233             :                               char_length, e_text);
    4234             : 
    4235             :             /*
    4236             :              * This condition exploits the single-matching-schema rule to
    4237             :              * speed up the query
    4238             :              */
    4239          10 :             appendPQExpBuffer(&query_buffer,
    4240             :                               " AND substring(pg_catalog.quote_ident(n.nspname) || '.',1,%d) ="
    4241             :                               " substring('%s',1,pg_catalog.length(pg_catalog.quote_ident(n.nspname))+1)",
    4242             :                               char_length, e_text);
    4243          10 :             appendPQExpBuffer(&query_buffer,
    4244             :                               " AND (SELECT pg_catalog.count(*)"
    4245             :                               " FROM pg_catalog.pg_namespace"
    4246             :                               " WHERE substring(pg_catalog.quote_ident(nspname) || '.',1,%d) ="
    4247             :                               " substring('%s',1,pg_catalog.length(pg_catalog.quote_ident(nspname))+1)) = 1",
    4248             :                               char_length, e_text);
    4249             : 
    4250             :             /* If an addon query was provided, use it */
    4251          10 :             if (simple_query)
    4252           0 :                 appendPQExpBuffer(&query_buffer, "\n%s", simple_query);
    4253             :         }
    4254             :         else
    4255             :         {
    4256             :             Assert(simple_query);
    4257             :             /* simple_query is an sprintf-style format string */
    4258           0 :             appendPQExpBuffer(&query_buffer, simple_query,
    4259             :                               char_length, e_text,
    4260             :                               e_info_charp, e_info_charp,
    4261             :                               e_info_charp2, e_info_charp2);
    4262             :         }
    4263             : 
    4264             :         /* Limit the number of records in the result */
    4265          10 :         appendPQExpBuffer(&query_buffer, "\nLIMIT %d",
    4266             :                           completion_max_records);
    4267             : 
    4268          10 :         result = exec_query(query_buffer.data);
    4269             : 
    4270          10 :         termPQExpBuffer(&query_buffer);
    4271          10 :         free(e_text);
    4272          10 :         if (e_info_charp)
    4273           0 :             free(e_info_charp);
    4274          10 :         if (e_info_charp2)
    4275           0 :             free(e_info_charp2);
    4276             :     }
    4277             : 
    4278             :     /* Find something that matches */
    4279          26 :     if (result && PQresultStatus(result) == PGRES_TUPLES_OK)
    4280             :     {
    4281             :         const char *item;
    4282             : 
    4283          42 :         while (list_index < PQntuples(result) &&
    4284          16 :                (item = PQgetvalue(result, list_index++, 0)))
    4285          16 :             if (pg_strncasecmp(text, item, byte_length) == 0)
    4286          16 :                 return pg_strdup(item);
    4287             :     }
    4288             : 
    4289             :     /* If nothing matches, free the db structure and return null */
    4290          10 :     PQclear(result);
    4291          10 :     result = NULL;
    4292          10 :     return NULL;
    4293             : }
    4294             : 
    4295             : 
    4296             : /*
    4297             :  * This function returns in order one of a fixed, NULL pointer terminated list
    4298             :  * of strings (if matching). This can be used if there are only a fixed number
    4299             :  * SQL words that can appear at certain spot.
    4300             :  */
    4301             : static char *
    4302          14 : complete_from_list(const char *text, int state)
    4303             : {
    4304             :     static int  string_length,
    4305             :                 list_index,
    4306             :                 matches;
    4307             :     static bool casesensitive;
    4308             :     const char *item;
    4309             : 
    4310             :     /* need to have a list */
    4311             :     Assert(completion_charpp != NULL);
    4312             : 
    4313             :     /* Initialization */
    4314          14 :     if (state == 0)
    4315             :     {
    4316           6 :         list_index = 0;
    4317           6 :         string_length = strlen(text);
    4318           6 :         casesensitive = completion_case_sensitive;
    4319           6 :         matches = 0;
    4320             :     }
    4321             : 
    4322         628 :     while ((item = completion_charpp[list_index++]))
    4323             :     {
    4324             :         /* First pass is case sensitive */
    4325         620 :         if (casesensitive && strncmp(text, item, string_length) == 0)
    4326             :         {
    4327           0 :             matches++;
    4328           0 :             return pg_strdup(item);
    4329             :         }
    4330             : 
    4331             :         /* Second pass is case insensitive, don't bother counting matches */
    4332         620 :         if (!casesensitive && pg_strncasecmp(text, item, string_length) == 0)
    4333             :         {
    4334           6 :             if (completion_case_sensitive)
    4335           2 :                 return pg_strdup(item);
    4336             :             else
    4337             : 
    4338             :                 /*
    4339             :                  * If case insensitive matching was requested initially,
    4340             :                  * adjust the case according to setting.
    4341             :                  */
    4342           4 :                 return pg_strdup_keyword_case(item, text);
    4343             :         }
    4344             :     }
    4345             : 
    4346             :     /*
    4347             :      * No matches found. If we're not case insensitive already, lets switch to
    4348             :      * being case insensitive and try again
    4349             :      */
    4350           8 :     if (casesensitive && matches == 0)
    4351             :     {
    4352           2 :         casesensitive = false;
    4353           2 :         list_index = 0;
    4354           2 :         state++;
    4355           2 :         return complete_from_list(text, state);
    4356             :     }
    4357             : 
    4358             :     /* If no more matches, return null. */
    4359           6 :     return NULL;
    4360             : }
    4361             : 
    4362             : 
    4363             : /*
    4364             :  * This function returns one fixed string the first time even if it doesn't
    4365             :  * match what's there, and nothing the second time.  The string
    4366             :  * to be used must be in completion_charp.
    4367             :  *
    4368             :  * If the given string is "", this has the effect of preventing readline
    4369             :  * from doing any completion.  (Without this, readline tries to do filename
    4370             :  * completion which is seldom the right thing.)
    4371             :  *
    4372             :  * If the given string is not empty, readline will replace whatever the
    4373             :  * user typed with that string.  This behavior might be useful if it's
    4374             :  * completely certain that we know what must appear at a certain spot,
    4375             :  * so that it's okay to overwrite misspellings.  In practice, given the
    4376             :  * relatively lame parsing technology used in this file, the level of
    4377             :  * certainty is seldom that high, so that you probably don't want to
    4378             :  * use this.  Use complete_from_list with a one-element list instead;
    4379             :  * that won't try to auto-correct "misspellings".
    4380             :  */
    4381             : static char *
    4382           0 : complete_from_const(const char *text, int state)
    4383             : {
    4384             :     Assert(completion_charp != NULL);
    4385           0 :     if (state == 0)
    4386             :     {
    4387           0 :         if (completion_case_sensitive)
    4388           0 :             return pg_strdup(completion_charp);
    4389             :         else
    4390             : 
    4391             :             /*
    4392             :              * If case insensitive matching was requested initially, adjust
    4393             :              * the case according to setting.
    4394             :              */
    4395           0 :             return pg_strdup_keyword_case(completion_charp, text);
    4396             :     }
    4397             :     else
    4398           0 :         return NULL;
    4399             : }
    4400             : 
    4401             : 
    4402             : /*
    4403             :  * This function appends the variable name with prefix and suffix to
    4404             :  * the variable names array.
    4405             :  */
    4406             : static void
    4407           0 : append_variable_names(char ***varnames, int *nvars,
    4408             :                       int *maxvars, const char *varname,
    4409             :                       const char *prefix, const char *suffix)
    4410             : {
    4411           0 :     if (*nvars >= *maxvars)
    4412             :     {
    4413           0 :         *maxvars *= 2;
    4414           0 :         *varnames = (char **) pg_realloc(*varnames,
    4415           0 :                                          ((*maxvars) + 1) * sizeof(char *));
    4416             :     }
    4417             : 
    4418           0 :     (*varnames)[(*nvars)++] = psprintf("%s%s%s", prefix, varname, suffix);
    4419           0 : }
    4420             : 
    4421             : 
    4422             : /*
    4423             :  * This function supports completion with the name of a psql variable.
    4424             :  * The variable names can be prefixed and suffixed with additional text
    4425             :  * to support quoting usages. If need_value is true, only variables
    4426             :  * that are currently set are included; otherwise, special variables
    4427             :  * (those that have hooks) are included even if currently unset.
    4428             :  */
    4429             : static char **
    4430           0 : complete_from_variables(const char *text, const char *prefix, const char *suffix,
    4431             :                         bool need_value)
    4432             : {
    4433             :     char      **matches;
    4434             :     char      **varnames;
    4435           0 :     int         nvars = 0;
    4436           0 :     int         maxvars = 100;
    4437             :     int         i;
    4438             :     struct _variable *ptr;
    4439             : 
    4440           0 :     varnames = (char **) pg_malloc((maxvars + 1) * sizeof(char *));
    4441             : 
    4442           0 :     for (ptr = pset.vars->next; ptr; ptr = ptr->next)
    4443             :     {
    4444           0 :         if (need_value && !(ptr->value))
    4445           0 :             continue;
    4446           0 :         append_variable_names(&varnames, &nvars, &maxvars, ptr->name,
    4447             :                               prefix, suffix);
    4448             :     }
    4449             : 
    4450           0 :     varnames[nvars] = NULL;
    4451           0 :     COMPLETE_WITH_LIST_CS((const char *const *) varnames);
    4452             : 
    4453           0 :     for (i = 0; i < nvars; i++)
    4454           0 :         free(varnames[i]);
    4455           0 :     free(varnames);
    4456             : 
    4457           0 :     return matches;
    4458             : }
    4459             : 
    4460             : 
    4461             : /*
    4462             :  * This function wraps rl_filename_completion_function() to strip quotes from
    4463             :  * the input before searching for matches and to quote any matches for which
    4464             :  * the consuming command will require it.
    4465             :  *
    4466             :  * Caller must set completion_charp to a zero- or one-character string
    4467             :  * containing the escape character.  This is necessary since \copy has no
    4468             :  * escape character, but every other backslash command recognizes "\" as an
    4469             :  * escape character.
    4470             :  *
    4471             :  * Caller must also set completion_force_quote to indicate whether to force
    4472             :  * quotes around the result.  (The SQL COPY command requires that.)
    4473             :  */
    4474             : static char *
    4475          32 : complete_from_files(const char *text, int state)
    4476             : {
    4477             : #ifdef USE_FILENAME_QUOTING_FUNCTIONS
    4478             : 
    4479             :     /*
    4480             :      * If we're using a version of Readline that supports filename quoting
    4481             :      * hooks, rely on those, and invoke rl_filename_completion_function()
    4482             :      * without messing with its arguments.  Readline does stuff internally
    4483             :      * that does not work well at all if we try to handle dequoting here.
    4484             :      * Instead, Readline will call quote_file_name() and dequote_file_name()
    4485             :      * (see below) at appropriate times.
    4486             :      *
    4487             :      * ... or at least, mostly it will.  There are some paths involving
    4488             :      * unmatched file names in which Readline never calls quote_file_name(),
    4489             :      * and if left to its own devices it will incorrectly append a quote
    4490             :      * anyway.  Set rl_completion_suppress_quote to prevent that.  If we do
    4491             :      * get to quote_file_name(), we'll clear this again.  (Yes, this seems
    4492             :      * like it's working around Readline bugs.)
    4493             :      */
    4494             : #ifdef HAVE_RL_COMPLETION_SUPPRESS_QUOTE
    4495          32 :     rl_completion_suppress_quote = 1;
    4496             : #endif
    4497             : 
    4498             :     /* If user typed a quote, force quoting (never remove user's quote) */
    4499          32 :     if (*text == '\'')
    4500           0 :         completion_force_quote = true;
    4501             : 
    4502          32 :     return rl_filename_completion_function(text, state);
    4503             : #else
    4504             : 
    4505             :     /*
    4506             :      * Otherwise, we have to do the best we can.
    4507             :      */
    4508             :     static const char *unquoted_text;
    4509             :     char       *unquoted_match;
    4510             :     char       *ret = NULL;
    4511             : 
    4512             :     /* If user typed a quote, force quoting (never remove user's quote) */
    4513             :     if (*text == '\'')
    4514             :         completion_force_quote = true;
    4515             : 
    4516             :     if (state == 0)
    4517             :     {
    4518             :         /* Initialization: stash the unquoted input. */
    4519             :         unquoted_text = strtokx(text, "", NULL, "'", *completion_charp,
    4520             :                                 false, true, pset.encoding);
    4521             :         /* expect a NULL return for the empty string only */
    4522             :         if (!unquoted_text)
    4523             :         {
    4524             :             Assert(*text == '\0');
    4525             :             unquoted_text = text;
    4526             :         }
    4527             :     }
    4528             : 
    4529             :     unquoted_match = rl_filename_completion_function(unquoted_text, state);
    4530             :     if (unquoted_match)
    4531             :     {
    4532             :         struct stat statbuf;
    4533             :         bool        is_dir = (stat(unquoted_match, &statbuf) == 0 &&
    4534             :                               S_ISDIR(statbuf.st_mode) != 0);
    4535             : 
    4536             :         /* Re-quote the result, if needed. */
    4537             :         ret = quote_if_needed(unquoted_match, " \t\r\n\"`",
    4538             :                               '\'', *completion_charp,
    4539             :                               completion_force_quote,
    4540             :                               pset.encoding);
    4541             :         if (ret)
    4542             :             free(unquoted_match);
    4543             :         else
    4544             :             ret = unquoted_match;
    4545             : 
    4546             :         /*
    4547             :          * If it's a directory, replace trailing quote with a slash; this is
    4548             :          * usually more convenient.  (If we didn't quote, leave this to
    4549             :          * libedit.)
    4550             :          */
    4551             :         if (*ret == '\'' && is_dir)
    4552             :         {
    4553             :             char       *retend = ret + strlen(ret) - 1;
    4554             : 
    4555             :             Assert(*retend == '\'');
    4556             :             *retend = '/';
    4557             :             /* Try to prevent libedit from adding a space, too */
    4558             : #ifdef HAVE_RL_COMPLETION_APPEND_CHARACTER
    4559             :             rl_completion_append_character = '\0';
    4560             : #endif
    4561             :         }
    4562             :     }
    4563             : 
    4564             :     return ret;
    4565             : #endif                          /* USE_FILENAME_QUOTING_FUNCTIONS */
    4566             : }
    4567             : 
    4568             : 
    4569             : /* HELPER FUNCTIONS */
    4570             : 
    4571             : 
    4572             : /*
    4573             :  * Make a pg_strdup copy of s and convert the case according to
    4574             :  * COMP_KEYWORD_CASE setting, using ref as the text that was already entered.
    4575             :  */
    4576             : static char *
    4577           4 : pg_strdup_keyword_case(const char *s, const char *ref)
    4578             : {
    4579             :     char       *ret,
    4580             :                *p;
    4581           4 :     unsigned char first = ref[0];
    4582             : 
    4583           4 :     ret = pg_strdup(s);
    4584             : 
    4585           6 :     if (pset.comp_case == PSQL_COMP_CASE_LOWER ||
    4586           4 :         ((pset.comp_case == PSQL_COMP_CASE_PRESERVE_LOWER ||
    4587           4 :           pset.comp_case == PSQL_COMP_CASE_PRESERVE_UPPER) && islower(first)) ||
    4588           2 :         (pset.comp_case == PSQL_COMP_CASE_PRESERVE_LOWER && !isalpha(first)))
    4589             :     {
    4590          14 :         for (p = ret; *p; p++)
    4591          12 :             *p = pg_tolower((unsigned char) *p);
    4592             :     }
    4593             :     else
    4594             :     {
    4595          14 :         for (p = ret; *p; p++)
    4596          12 :             *p = pg_toupper((unsigned char) *p);
    4597             :     }
    4598             : 
    4599           4 :     return ret;
    4600             : }
    4601             : 
    4602             : 
    4603             : /*
    4604             :  * escape_string - Escape argument for use as string literal.
    4605             :  *
    4606             :  * The returned value has to be freed.
    4607             :  */
    4608             : static char *
    4609          10 : escape_string(const char *text)
    4610             : {
    4611             :     size_t      text_length;
    4612             :     char       *result;
    4613             : 
    4614          10 :     text_length = strlen(text);
    4615             : 
    4616          10 :     result = pg_malloc(text_length * 2 + 1);
    4617          10 :     PQescapeStringConn(pset.db, result, text, text_length, NULL);
    4618             : 
    4619          10 :     return result;
    4620             : }
    4621             : 
    4622             : 
    4623             : /*
    4624             :  * Execute a query and report any errors. This should be the preferred way of
    4625             :  * talking to the database in this file.
    4626             :  */
    4627             : static PGresult *
    4628          10 : exec_query(const char *query)
    4629             : {
    4630             :     PGresult   *result;
    4631             : 
    4632          10 :     if (query == NULL || !pset.db || PQstatus(pset.db) != CONNECTION_OK)
    4633           0 :         return NULL;
    4634             : 
    4635          10 :     result = PQexec(pset.db, query);
    4636             : 
    4637          10 :     if (PQresultStatus(result) != PGRES_TUPLES_OK)
    4638             :     {
    4639             : #ifdef NOT_USED
    4640             :         pg_log_error("tab completion query failed: %s\nQuery was:\n%s",
    4641             :                      PQerrorMessage(pset.db), query);
    4642             : #endif
    4643           0 :         PQclear(result);
    4644           0 :         result = NULL;
    4645             :     }
    4646             : 
    4647          10 :     return result;
    4648             : }
    4649             : 
    4650             : 
    4651             : /*
    4652             :  * Parse all the word(s) before point.
    4653             :  *
    4654             :  * Returns a malloc'd array of character pointers that point into the malloc'd
    4655             :  * data array returned to *buffer; caller must free() both of these when done.
    4656             :  * *nwords receives the number of words found, ie, the valid length of the
    4657             :  * return array.
    4658             :  *
    4659             :  * Words are returned right to left, that is, previous_words[0] gets the last
    4660             :  * word before point, previous_words[1] the next-to-last, etc.
    4661             :  */
    4662             : static char **
    4663          28 : get_previous_words(int point, char **buffer, int *nwords)
    4664             : {
    4665             :     char      **previous_words;
    4666             :     char       *buf;
    4667             :     char       *outptr;
    4668          28 :     int         words_found = 0;
    4669             :     int         i;
    4670             : 
    4671             :     /*
    4672             :      * If we have anything in tab_completion_query_buf, paste it together with
    4673             :      * rl_line_buffer to construct the full query.  Otherwise we can just use
    4674             :      * rl_line_buffer as the input string.
    4675             :      */
    4676          28 :     if (tab_completion_query_buf && tab_completion_query_buf->len > 0)
    4677             :     {
    4678           0 :         i = tab_completion_query_buf->len;
    4679           0 :         buf = pg_malloc(point + i + 2);
    4680           0 :         memcpy(buf, tab_completion_query_buf->data, i);
    4681           0 :         buf[i++] = '\n';
    4682           0 :         memcpy(buf + i, rl_line_buffer, point);
    4683           0 :         i += point;
    4684           0 :         buf[i] = '\0';
    4685             :         /* Readjust point to reference appropriate offset in buf */
    4686           0 :         point = i;
    4687             :     }
    4688             :     else
    4689          28 :         buf = rl_line_buffer;
    4690             : 
    4691             :     /*
    4692             :      * Allocate an array of string pointers and a buffer to hold the strings
    4693             :      * themselves.  The worst case is that the line contains only
    4694             :      * non-whitespace WORD_BREAKS characters, making each one a separate word.
    4695             :      * This is usually much more space than we need, but it's cheaper than
    4696             :      * doing a separate malloc() for each word.
    4697             :      */
    4698          28 :     previous_words = (char **) pg_malloc(point * sizeof(char *));
    4699          28 :     *buffer = outptr = (char *) pg_malloc(point * 2);
    4700             : 
    4701             :     /*
    4702             :      * First we look for a non-word char before the current point.  (This is
    4703             :      * probably useless, if readline is on the same page as we are about what
    4704             :      * is a word, but if so it's cheap.)
    4705             :      */
    4706          32 :     for (i = point - 1; i >= 0; i--)
    4707             :     {
    4708          26 :         if (strchr(WORD_BREAKS, buf[i]))
    4709          22 :             break;
    4710             :     }
    4711          28 :     point = i;
    4712             : 
    4713             :     /*
    4714             :      * Now parse words, working backwards, until we hit start of line.  The
    4715             :      * backwards scan has some interesting but intentional properties
    4716             :      * concerning parenthesis handling.
    4717             :      */
    4718          86 :     while (point >= 0)
    4719             :     {
    4720             :         int         start,
    4721             :                     end;
    4722          58 :         bool        inquotes = false;
    4723          58 :         int         parentheses = 0;
    4724             : 
    4725             :         /* now find the first non-space which then constitutes the end */
    4726          58 :         end = -1;
    4727         116 :         for (i = point; i >= 0; i--)
    4728             :         {
    4729         116 :             if (!isspace((unsigned char) buf[i]))
    4730             :             {
    4731          58 :                 end = i;
    4732          58 :                 break;
    4733             :             }
    4734             :         }
    4735             :         /* if no end found, we're done */
    4736          58 :         if (end < 0)
    4737           0 :             break;
    4738             : 
    4739             :         /*
    4740             :          * Otherwise we now look for the start.  The start is either the last
    4741             :          * character before any word-break character going backwards from the
    4742             :          * end, or it's simply character 0.  We also handle open quotes and
    4743             :          * parentheses.
    4744             :          */
    4745         238 :         for (start = end; start > 0; start--)
    4746             :         {
    4747         216 :             if (buf[start] == '"')
    4748           0 :                 inquotes = !inquotes;
    4749         216 :             if (!inquotes)
    4750             :             {
    4751         216 :                 if (buf[start] == ')')
    4752           0 :                     parentheses++;
    4753         216 :                 else if (buf[start] == '(')
    4754             :                 {
    4755           0 :                     if (--parentheses <= 0)
    4756           0 :                         break;
    4757             :                 }
    4758         216 :                 else if (parentheses == 0 &&
    4759         216 :                          strchr(WORD_BREAKS, buf[start - 1]))
    4760          36 :                     break;
    4761             :             }
    4762             :         }
    4763             : 
    4764             :         /* Return the word located at start to end inclusive */
    4765          58 :         previous_words[words_found++] = outptr;
    4766          58 :         i = end - start + 1;
    4767          58 :         memcpy(outptr, &buf[start], i);
    4768          58 :         outptr += i;
    4769          58 :         *outptr++ = '\0';
    4770             : 
    4771             :         /* Continue searching */
    4772          58 :         point = start - 1;
    4773             :     }
    4774             : 
    4775             :     /* Release parsing input workspace, if we made one above */
    4776          28 :     if (buf != rl_line_buffer)
    4777           0 :         free(buf);
    4778             : 
    4779          28 :     *nwords = words_found;
    4780          28 :     return previous_words;
    4781             : }
    4782             : 
    4783             : /*
    4784             :  * Look up the type for the GUC variable with the passed name.
    4785             :  *
    4786             :  * Returns NULL if the variable is unknown. Otherwise the returned string,
    4787             :  * containing the type, has to be freed.
    4788             :  */
    4789             : static char *
    4790           0 : get_guctype(const char *varname)
    4791             : {
    4792             :     PQExpBufferData query_buffer;
    4793             :     char       *e_varname;
    4794             :     PGresult   *result;
    4795           0 :     char       *guctype = NULL;
    4796             : 
    4797           0 :     e_varname = escape_string(varname);
    4798             : 
    4799           0 :     initPQExpBuffer(&query_buffer);
    4800           0 :     appendPQExpBuffer(&query_buffer,
    4801             :                       "SELECT vartype FROM pg_catalog.pg_settings "
    4802             :                       "WHERE pg_catalog.lower(name) = pg_catalog.lower('%s')",
    4803             :                       e_varname);
    4804             : 
    4805           0 :     result = exec_query(query_buffer.data);
    4806           0 :     termPQExpBuffer(&query_buffer);
    4807           0 :     free(e_varname);
    4808             : 
    4809           0 :     if (PQresultStatus(result) == PGRES_TUPLES_OK && PQntuples(result) > 0)
    4810           0 :         guctype = pg_strdup(PQgetvalue(result, 0, 0));
    4811             : 
    4812           0 :     PQclear(result);
    4813             : 
    4814           0 :     return guctype;
    4815             : }
    4816             : 
    4817             : #ifdef USE_FILENAME_QUOTING_FUNCTIONS
    4818             : 
    4819             : /*
    4820             :  * Quote a filename according to SQL rules, returning a malloc'd string.
    4821             :  * completion_charp must point to escape character or '\0', and
    4822             :  * completion_force_quote must be set correctly, as per comments for
    4823             :  * complete_from_files().
    4824             :  */
    4825             : static char *
    4826          10 : quote_file_name(char *fname, int match_type, char *quote_pointer)
    4827             : {
    4828             :     char       *s;
    4829             :     struct stat statbuf;
    4830             : 
    4831             :     /* Quote if needed. */
    4832          20 :     s = quote_if_needed(fname, " \t\r\n\"`",
    4833          10 :                         '\'', *completion_charp,
    4834             :                         completion_force_quote,
    4835             :                         pset.encoding);
    4836          10 :     if (!s)
    4837           4 :         s = pg_strdup(fname);
    4838             : 
    4839             :     /*
    4840             :      * However, some of the time we have to strip the trailing quote from what
    4841             :      * we send back.  Never strip the trailing quote if the user already typed
    4842             :      * one; otherwise, suppress the trailing quote if we have multiple/no
    4843             :      * matches (because we don't want to add a quote if the input is seemingly
    4844             :      * unfinished), or if the input was already quoted (because Readline will
    4845             :      * do arguably-buggy things otherwise), or if the file does not exist, or
    4846             :      * if it's a directory.
    4847             :      */
    4848          10 :     if (*s == '\'' &&
    4849           6 :         completion_last_char != '\'' &&
    4850           2 :         (match_type != SINGLE_MATCH ||
    4851           4 :          (quote_pointer && *quote_pointer == '\'') ||
    4852           2 :          stat(fname, &statbuf) != 0 ||
    4853           2 :          S_ISDIR(statbuf.st_mode)))
    4854             :     {
    4855           4 :         char       *send = s + strlen(s) - 1;
    4856             : 
    4857             :         Assert(*send == '\'');
    4858           4 :         *send = '\0';
    4859             :     }
    4860             : 
    4861             :     /*
    4862             :      * And now we can let Readline do its thing with possibly adding a quote
    4863             :      * on its own accord.  (This covers some additional cases beyond those
    4864             :      * dealt with above.)
    4865             :      */
    4866             : #ifdef HAVE_RL_COMPLETION_SUPPRESS_QUOTE
    4867          10 :     rl_completion_suppress_quote = 0;
    4868             : #endif
    4869             : 
    4870             :     /*
    4871             :      * If user typed a leading quote character other than single quote (i.e.,
    4872             :      * double quote), zap it, so that we replace it with the correct single
    4873             :      * quote.
    4874             :      */
    4875          10 :     if (quote_pointer && *quote_pointer != '\'')
    4876           8 :         *quote_pointer = '\0';
    4877             : 
    4878          10 :     return s;
    4879             : }
    4880             : 
    4881             : /*
    4882             :  * Dequote a filename, if it's quoted.
    4883             :  * completion_charp must point to escape character or '\0', as per
    4884             :  * comments for complete_from_files().
    4885             :  */
    4886             : static char *
    4887          16 : dequote_file_name(char *fname, int quote_char)
    4888             : {
    4889             :     char       *unquoted_fname;
    4890             : 
    4891             :     /*
    4892             :      * If quote_char is set, it's not included in "fname".  We have to add it
    4893             :      * or strtokx will not interpret the string correctly (notably, it won't
    4894             :      * recognize escapes).
    4895             :      */
    4896          16 :     if (quote_char == '\'')
    4897             :     {
    4898           8 :         char       *workspace = (char *) pg_malloc(strlen(fname) + 2);
    4899             : 
    4900           8 :         workspace[0] = quote_char;
    4901           8 :         strcpy(workspace + 1, fname);
    4902           8 :         unquoted_fname = strtokx(workspace, "", NULL, "'", *completion_charp,
    4903             :                                  false, true, pset.encoding);
    4904           8 :         free(workspace);
    4905             :     }
    4906             :     else
    4907           8 :         unquoted_fname = strtokx(fname, "", NULL, "'", *completion_charp,
    4908             :                                  false, true, pset.encoding);
    4909             : 
    4910             :     /* expect a NULL return for the empty string only */
    4911          16 :     if (!unquoted_fname)
    4912             :     {
    4913             :         Assert(*fname == '\0');
    4914           0 :         unquoted_fname = fname;
    4915             :     }
    4916             : 
    4917             :     /* readline expects a malloc'd result that it is to free */
    4918          16 :     return pg_strdup(unquoted_fname);
    4919             : }
    4920             : 
    4921             : #endif                          /* USE_FILENAME_QUOTING_FUNCTIONS */
    4922             : 
    4923             : #endif                          /* USE_READLINE */

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