LCOV - code coverage report
Current view: top level - src/backend/catalog - pg_aggregate.c (source / functions) Coverage Total Hit
Test: PostgreSQL 20devel Lines: 80.5 % 261 210
Test Date: 2026-09-05 07:15:54 Functions: 100.0 % 2 2
Legend: Lines:     hit not hit
Branches: + taken - not taken # not executed
Branches: 52.7 % 260 137

             Branch data     Line data    Source code
       1                 :             : /*-------------------------------------------------------------------------
       2                 :             :  *
       3                 :             :  * pg_aggregate.c
       4                 :             :  *    routines to support manipulation of the pg_aggregate relation
       5                 :             :  *
       6                 :             :  * Portions Copyright (c) 1996-2026, PostgreSQL Global Development Group
       7                 :             :  * Portions Copyright (c) 1994, Regents of the University of California
       8                 :             :  *
       9                 :             :  *
      10                 :             :  * IDENTIFICATION
      11                 :             :  *    src/backend/catalog/pg_aggregate.c
      12                 :             :  *
      13                 :             :  *-------------------------------------------------------------------------
      14                 :             :  */
      15                 :             : #include "postgres.h"
      16                 :             : 
      17                 :             : #include "access/htup_details.h"
      18                 :             : #include "access/table.h"
      19                 :             : #include "catalog/dependency.h"
      20                 :             : #include "catalog/indexing.h"
      21                 :             : #include "catalog/pg_aggregate.h"
      22                 :             : #include "catalog/pg_language.h"
      23                 :             : #include "catalog/pg_operator.h"
      24                 :             : #include "catalog/pg_proc.h"
      25                 :             : #include "catalog/pg_type.h"
      26                 :             : #include "miscadmin.h"
      27                 :             : #include "parser/parse_coerce.h"
      28                 :             : #include "parser/parse_func.h"
      29                 :             : #include "parser/parse_oper.h"
      30                 :             : #include "utils/acl.h"
      31                 :             : #include "utils/builtins.h"
      32                 :             : #include "utils/lsyscache.h"
      33                 :             : #include "utils/rel.h"
      34                 :             : #include "utils/syscache.h"
      35                 :             : 
      36                 :             : 
      37                 :             : static Oid  lookup_agg_function(List *fnName, int nargs, Oid *input_types,
      38                 :             :                                 Oid variadicArgType,
      39                 :             :                                 Oid *rettype);
      40                 :             : 
      41                 :             : 
      42                 :             : /*
      43                 :             :  * AggregateCreate
      44                 :             :  */
      45                 :             : ObjectAddress
      46                 :         561 : AggregateCreate(const char *aggName,
      47                 :             :                 Oid aggNamespace,
      48                 :             :                 bool replace,
      49                 :             :                 char aggKind,
      50                 :             :                 int numArgs,
      51                 :             :                 int numDirectArgs,
      52                 :             :                 oidvector *parameterTypes,
      53                 :             :                 Datum allParameterTypes,
      54                 :             :                 Datum parameterModes,
      55                 :             :                 Datum parameterNames,
      56                 :             :                 List *parameterDefaults,
      57                 :             :                 Oid variadicArgType,
      58                 :             :                 List *aggtransfnName,
      59                 :             :                 List *aggfinalfnName,
      60                 :             :                 List *aggcombinefnName,
      61                 :             :                 List *aggserialfnName,
      62                 :             :                 List *aggdeserialfnName,
      63                 :             :                 List *aggmtransfnName,
      64                 :             :                 List *aggminvtransfnName,
      65                 :             :                 List *aggmfinalfnName,
      66                 :             :                 bool finalfnExtraArgs,
      67                 :             :                 bool mfinalfnExtraArgs,
      68                 :             :                 char finalfnModify,
      69                 :             :                 char mfinalfnModify,
      70                 :             :                 List *aggsortopName,
      71                 :             :                 List *aggsupportfuncName,
      72                 :             :                 Oid aggTransType,
      73                 :             :                 int32 aggTransSpace,
      74                 :             :                 Oid aggmTransType,
      75                 :             :                 int32 aggmTransSpace,
      76                 :             :                 const char *agginitval,
      77                 :             :                 const char *aggminitval,
      78                 :             :                 char proparallel)
      79                 :             : {
      80                 :             :     Relation    aggdesc;
      81                 :             :     HeapTuple   tup;
      82                 :             :     HeapTuple   oldtup;
      83                 :             :     bool        nulls[Natts_pg_aggregate];
      84                 :             :     Datum       values[Natts_pg_aggregate];
      85                 :             :     bool        replaces[Natts_pg_aggregate];
      86                 :             :     Form_pg_proc proc;
      87                 :             :     Oid         transfn;
      88                 :         561 :     Oid         finalfn = InvalidOid;   /* can be omitted */
      89                 :         561 :     Oid         combinefn = InvalidOid; /* can be omitted */
      90                 :         561 :     Oid         serialfn = InvalidOid;  /* can be omitted */
      91                 :         561 :     Oid         deserialfn = InvalidOid;    /* can be omitted */
      92                 :         561 :     Oid         mtransfn = InvalidOid;  /* can be omitted */
      93                 :         561 :     Oid         minvtransfn = InvalidOid;   /* can be omitted */
      94                 :         561 :     Oid         mfinalfn = InvalidOid;  /* can be omitted */
      95                 :         561 :     Oid         sortop = InvalidOid;    /* can be omitted */
      96                 :         561 :     Oid         supportfn = InvalidOid; /* can be omitted */
      97                 :         561 :     Oid        *aggArgTypes = parameterTypes->values;
      98                 :         561 :     bool        mtransIsStrict = false;
      99                 :             :     Oid         rettype;
     100                 :             :     Oid         finaltype;
     101                 :             :     Oid         fnArgs[FUNC_MAX_ARGS];
     102                 :             :     int         nargs_transfn;
     103                 :             :     int         nargs_finalfn;
     104                 :             :     Oid         procOid;
     105                 :             :     TupleDesc   tupDesc;
     106                 :             :     char       *detailmsg;
     107                 :             :     int         i;
     108                 :             :     ObjectAddress myself,
     109                 :             :                 referenced;
     110                 :             :     ObjectAddresses *addrs;
     111                 :             :     AclResult   aclresult;
     112                 :             : 
     113                 :             :     /* sanity checks (caller should have caught these) */
     114         [ -  + ]:         561 :     if (!aggName)
     115         [ #  # ]:           0 :         elog(ERROR, "no aggregate name supplied");
     116                 :             : 
     117         [ -  + ]:         561 :     if (!aggtransfnName)
     118         [ #  # ]:           0 :         elog(ERROR, "aggregate must have a transition function");
     119                 :             : 
     120   [ +  -  -  + ]:         561 :     if (numDirectArgs < 0 || numDirectArgs > numArgs)
     121         [ #  # ]:           0 :         elog(ERROR, "incorrect number of direct arguments for aggregate");
     122                 :             : 
     123                 :             :     /*
     124                 :             :      * Aggregates can have at most FUNC_MAX_ARGS-1 args, else the transfn
     125                 :             :      * and/or finalfn will be unrepresentable in pg_proc.  We must check now
     126                 :             :      * to protect fixed-size arrays here and possibly in called functions.
     127                 :             :      */
     128   [ +  -  -  + ]:         561 :     if (numArgs < 0 || numArgs > FUNC_MAX_ARGS - 1)
     129         [ #  # ]:           0 :         ereport(ERROR,
     130                 :             :                 (errcode(ERRCODE_TOO_MANY_ARGUMENTS),
     131                 :             :                  errmsg_plural("aggregates cannot have more than %d argument",
     132                 :             :                                "aggregates cannot have more than %d arguments",
     133                 :             :                                FUNC_MAX_ARGS - 1,
     134                 :             :                                FUNC_MAX_ARGS - 1)));
     135                 :             : 
     136                 :             :     /*
     137                 :             :      * If transtype is polymorphic, must have polymorphic argument also; else
     138                 :             :      * we will have no way to deduce the actual transtype.
     139                 :             :      */
     140                 :         561 :     detailmsg = check_valid_polymorphic_signature(aggTransType,
     141                 :             :                                                   aggArgTypes,
     142                 :             :                                                   numArgs);
     143         [ +  + ]:         561 :     if (detailmsg)
     144         [ +  - ]:          72 :         ereport(ERROR,
     145                 :             :                 (errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
     146                 :             :                  errmsg("cannot determine transition data type"),
     147                 :             :                  errdetail_internal("%s", detailmsg)));
     148                 :             : 
     149                 :             :     /*
     150                 :             :      * Likewise for moving-aggregate transtype, if any
     151                 :             :      */
     152         [ +  + ]:         489 :     if (OidIsValid(aggmTransType))
     153                 :             :     {
     154                 :          38 :         detailmsg = check_valid_polymorphic_signature(aggmTransType,
     155                 :             :                                                       aggArgTypes,
     156                 :             :                                                       numArgs);
     157         [ -  + ]:          38 :         if (detailmsg)
     158         [ #  # ]:           0 :             ereport(ERROR,
     159                 :             :                     (errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
     160                 :             :                      errmsg("cannot determine transition data type"),
     161                 :             :                      errdetail_internal("%s", detailmsg)));
     162                 :             :     }
     163                 :             : 
     164                 :             :     /*
     165                 :             :      * An ordered-set aggregate that is VARIADIC must be VARIADIC ANY.  In
     166                 :             :      * principle we could support regular variadic types, but it would make
     167                 :             :      * things much more complicated because we'd have to assemble the correct
     168                 :             :      * subsets of arguments into array values.  Since no standard aggregates
     169                 :             :      * have use for such a case, we aren't bothering for now.
     170                 :             :      */
     171   [ +  +  +  +  :         489 :     if (AGGKIND_IS_ORDERED_SET(aggKind) && OidIsValid(variadicArgType) &&
                   -  + ]
     172                 :             :         variadicArgType != ANYOID)
     173         [ #  # ]:           0 :         ereport(ERROR,
     174                 :             :                 (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
     175                 :             :                  errmsg("a variadic ordered-set aggregate must use VARIADIC type ANY")));
     176                 :             : 
     177                 :             :     /*
     178                 :             :      * If it's a hypothetical-set aggregate, there must be at least as many
     179                 :             :      * direct arguments as aggregated ones, and the last N direct arguments
     180                 :             :      * must match the aggregated ones in type.  (We have to check this again
     181                 :             :      * when the aggregate is called, in case ANY is involved, but it makes
     182                 :             :      * sense to reject the aggregate definition now if the declared arg types
     183                 :             :      * don't match up.)  It's unconditionally OK if numDirectArgs == numArgs,
     184                 :             :      * indicating that the grammar merged identical VARIADIC entries from both
     185                 :             :      * lists.  Otherwise, if the agg is VARIADIC, then we had VARIADIC only on
     186                 :             :      * the aggregated side, which is not OK.  Otherwise, insist on the last N
     187                 :             :      * parameter types on each side matching exactly.
     188                 :             :      */
     189   [ +  +  -  + ]:         489 :     if (aggKind == AGGKIND_HYPOTHETICAL &&
     190                 :             :         numDirectArgs < numArgs)
     191                 :             :     {
     192                 :           0 :         int         numAggregatedArgs = numArgs - numDirectArgs;
     193                 :             : 
     194   [ #  #  #  # ]:           0 :         if (OidIsValid(variadicArgType) ||
     195                 :           0 :             numDirectArgs < numAggregatedArgs ||
     196                 :           0 :             memcmp(aggArgTypes + (numDirectArgs - numAggregatedArgs),
     197         [ #  # ]:           0 :                    aggArgTypes + numDirectArgs,
     198                 :             :                    numAggregatedArgs * sizeof(Oid)) != 0)
     199         [ #  # ]:           0 :             ereport(ERROR,
     200                 :             :                     (errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
     201                 :             :                      errmsg("a hypothetical-set aggregate must have direct arguments matching its aggregated arguments")));
     202                 :             :     }
     203                 :             : 
     204                 :             :     /*
     205                 :             :      * Find the transfn.  For ordinary aggs, it takes the transtype plus all
     206                 :             :      * aggregate arguments.  For ordered-set aggs, it takes the transtype plus
     207                 :             :      * all aggregated args, but not direct args.  However, we have to treat
     208                 :             :      * specially the case where a trailing VARIADIC item is considered to
     209                 :             :      * cover both direct and aggregated args.
     210                 :             :      */
     211         [ +  + ]:         489 :     if (AGGKIND_IS_ORDERED_SET(aggKind))
     212                 :             :     {
     213         [ +  + ]:          14 :         if (numDirectArgs < numArgs)
     214                 :           9 :             nargs_transfn = numArgs - numDirectArgs + 1;
     215                 :             :         else
     216                 :             :         {
     217                 :             :             /* special case with VARIADIC last arg */
     218                 :             :             Assert(variadicArgType != InvalidOid);
     219                 :           5 :             nargs_transfn = 2;
     220                 :             :         }
     221                 :          14 :         fnArgs[0] = aggTransType;
     222                 :          14 :         memcpy(fnArgs + 1, aggArgTypes + (numArgs - (nargs_transfn - 1)),
     223                 :          14 :                (nargs_transfn - 1) * sizeof(Oid));
     224                 :             :     }
     225                 :             :     else
     226                 :             :     {
     227                 :         475 :         nargs_transfn = numArgs + 1;
     228                 :         475 :         fnArgs[0] = aggTransType;
     229                 :         475 :         memcpy(fnArgs + 1, aggArgTypes, numArgs * sizeof(Oid));
     230                 :             :     }
     231                 :         489 :     transfn = lookup_agg_function(aggtransfnName, nargs_transfn,
     232                 :             :                                   fnArgs, variadicArgType,
     233                 :             :                                   &rettype);
     234                 :             : 
     235                 :             :     /*
     236                 :             :      * Return type of transfn (possibly after refinement by
     237                 :             :      * enforce_generic_type_consistency, if transtype isn't polymorphic) must
     238                 :             :      * exactly match declared transtype.
     239                 :             :      *
     240                 :             :      * In the non-polymorphic-transtype case, it might be okay to allow a
     241                 :             :      * rettype that's binary-coercible to transtype, but I'm not quite
     242                 :             :      * convinced that it's either safe or useful.  When transtype is
     243                 :             :      * polymorphic we *must* demand exact equality.
     244                 :             :      */
     245         [ -  + ]:         405 :     if (rettype != aggTransType)
     246         [ #  # ]:           0 :         ereport(ERROR,
     247                 :             :                 (errcode(ERRCODE_DATATYPE_MISMATCH),
     248                 :             :                  errmsg("return type of transition function %s is not %s",
     249                 :             :                         NameListToString(aggtransfnName),
     250                 :             :                         format_type_be(aggTransType))));
     251                 :             : 
     252                 :         405 :     tup = SearchSysCache1(PROCOID, ObjectIdGetDatum(transfn));
     253         [ -  + ]:         405 :     if (!HeapTupleIsValid(tup))
     254         [ #  # ]:           0 :         elog(ERROR, "cache lookup failed for function %u", transfn);
     255                 :         405 :     proc = (Form_pg_proc) GETSTRUCT(tup);
     256                 :             : 
     257                 :             :     /*
     258                 :             :      * If the transfn is strict and the initval is NULL, make sure first input
     259                 :             :      * type and transtype are the same (or at least binary-compatible), so
     260                 :             :      * that it's OK to use the first input value as the initial transValue.
     261                 :             :      */
     262   [ +  +  +  + ]:         405 :     if (proc->proisstrict && agginitval == NULL)
     263                 :             :     {
     264         [ +  - ]:          63 :         if (numArgs < 1 ||
     265         [ -  + ]:          63 :             !IsBinaryCoercible(aggArgTypes[0], aggTransType))
     266         [ #  # ]:           0 :             ereport(ERROR,
     267                 :             :                     (errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
     268                 :             :                      errmsg("must not omit initial value when transition function is strict and transition type is not compatible with input type")));
     269                 :             :     }
     270                 :             : 
     271                 :         405 :     ReleaseSysCache(tup);
     272                 :             : 
     273                 :             :     /* handle moving-aggregate transfn, if supplied */
     274         [ +  + ]:         405 :     if (aggmtransfnName)
     275                 :             :     {
     276                 :             :         /*
     277                 :             :          * The arguments are the same as for the regular transfn, except that
     278                 :             :          * the transition data type might be different.  So re-use the fnArgs
     279                 :             :          * values set up above, except for that one.
     280                 :             :          */
     281                 :             :         Assert(OidIsValid(aggmTransType));
     282                 :          38 :         fnArgs[0] = aggmTransType;
     283                 :             : 
     284                 :          38 :         mtransfn = lookup_agg_function(aggmtransfnName, nargs_transfn,
     285                 :             :                                        fnArgs, variadicArgType,
     286                 :             :                                        &rettype);
     287                 :             : 
     288                 :             :         /* As above, return type must exactly match declared mtranstype. */
     289         [ -  + ]:          38 :         if (rettype != aggmTransType)
     290         [ #  # ]:           0 :             ereport(ERROR,
     291                 :             :                     (errcode(ERRCODE_DATATYPE_MISMATCH),
     292                 :             :                      errmsg("return type of transition function %s is not %s",
     293                 :             :                             NameListToString(aggmtransfnName),
     294                 :             :                             format_type_be(aggmTransType))));
     295                 :             : 
     296                 :          38 :         tup = SearchSysCache1(PROCOID, ObjectIdGetDatum(mtransfn));
     297         [ -  + ]:          38 :         if (!HeapTupleIsValid(tup))
     298         [ #  # ]:           0 :             elog(ERROR, "cache lookup failed for function %u", mtransfn);
     299                 :          38 :         proc = (Form_pg_proc) GETSTRUCT(tup);
     300                 :             : 
     301                 :             :         /*
     302                 :             :          * If the mtransfn is strict and the minitval is NULL, check first
     303                 :             :          * input type and mtranstype are binary-compatible.
     304                 :             :          */
     305   [ +  +  +  + ]:          38 :         if (proc->proisstrict && aggminitval == NULL)
     306                 :             :         {
     307         [ +  - ]:          23 :             if (numArgs < 1 ||
     308         [ -  + ]:          23 :                 !IsBinaryCoercible(aggArgTypes[0], aggmTransType))
     309         [ #  # ]:           0 :                 ereport(ERROR,
     310                 :             :                         (errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
     311                 :             :                          errmsg("must not omit initial value when transition function is strict and transition type is not compatible with input type")));
     312                 :             :         }
     313                 :             : 
     314                 :             :         /* Remember if mtransfn is strict; we may need this below */
     315                 :          38 :         mtransIsStrict = proc->proisstrict;
     316                 :             : 
     317                 :          38 :         ReleaseSysCache(tup);
     318                 :             :     }
     319                 :             : 
     320                 :             :     /* handle minvtransfn, if supplied */
     321         [ +  + ]:         405 :     if (aggminvtransfnName)
     322                 :             :     {
     323                 :             :         /*
     324                 :             :          * This must have the same number of arguments with the same types as
     325                 :             :          * the forward transition function, so just re-use the fnArgs data.
     326                 :             :          */
     327                 :             :         Assert(aggmtransfnName);
     328                 :             : 
     329                 :          38 :         minvtransfn = lookup_agg_function(aggminvtransfnName, nargs_transfn,
     330                 :             :                                           fnArgs, variadicArgType,
     331                 :             :                                           &rettype);
     332                 :             : 
     333                 :             :         /* As above, return type must exactly match declared mtranstype. */
     334         [ +  + ]:          38 :         if (rettype != aggmTransType)
     335         [ +  - ]:           4 :             ereport(ERROR,
     336                 :             :                     (errcode(ERRCODE_DATATYPE_MISMATCH),
     337                 :             :                      errmsg("return type of inverse transition function %s is not %s",
     338                 :             :                             NameListToString(aggminvtransfnName),
     339                 :             :                             format_type_be(aggmTransType))));
     340                 :             : 
     341                 :          34 :         tup = SearchSysCache1(PROCOID, ObjectIdGetDatum(minvtransfn));
     342         [ -  + ]:          34 :         if (!HeapTupleIsValid(tup))
     343         [ #  # ]:           0 :             elog(ERROR, "cache lookup failed for function %u", minvtransfn);
     344                 :          34 :         proc = (Form_pg_proc) GETSTRUCT(tup);
     345                 :             : 
     346                 :             :         /*
     347                 :             :          * We require the strictness settings of the forward and inverse
     348                 :             :          * transition functions to agree.  This saves having to handle
     349                 :             :          * assorted special cases at execution time.
     350                 :             :          */
     351         [ +  + ]:          34 :         if (proc->proisstrict != mtransIsStrict)
     352         [ +  - ]:           4 :             ereport(ERROR,
     353                 :             :                     (errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
     354                 :             :                      errmsg("strictness of aggregate's forward and inverse transition functions must match")));
     355                 :             : 
     356                 :          30 :         ReleaseSysCache(tup);
     357                 :             :     }
     358                 :             : 
     359                 :             :     /* handle finalfn, if supplied */
     360         [ +  + ]:         397 :     if (aggfinalfnName)
     361                 :             :     {
     362                 :             :         /*
     363                 :             :          * If finalfnExtraArgs is specified, the transfn takes the transtype
     364                 :             :          * plus all args; otherwise, it just takes the transtype plus any
     365                 :             :          * direct args.  (Non-direct args are useless at runtime, and are
     366                 :             :          * actually passed as NULLs, but we may need them in the function
     367                 :             :          * signature to allow resolution of a polymorphic agg's result type.)
     368                 :             :          */
     369                 :         155 :         Oid         ffnVariadicArgType = variadicArgType;
     370                 :             : 
     371                 :         155 :         fnArgs[0] = aggTransType;
     372                 :         155 :         memcpy(fnArgs + 1, aggArgTypes, numArgs * sizeof(Oid));
     373         [ +  + ]:         155 :         if (finalfnExtraArgs)
     374                 :          10 :             nargs_finalfn = numArgs + 1;
     375                 :             :         else
     376                 :             :         {
     377                 :         145 :             nargs_finalfn = numDirectArgs + 1;
     378         [ +  + ]:         145 :             if (numDirectArgs < numArgs)
     379                 :             :             {
     380                 :             :                 /* variadic argument doesn't affect finalfn */
     381                 :         125 :                 ffnVariadicArgType = InvalidOid;
     382                 :             :             }
     383                 :             :         }
     384                 :             : 
     385                 :         155 :         finalfn = lookup_agg_function(aggfinalfnName, nargs_finalfn,
     386                 :             :                                       fnArgs, ffnVariadicArgType,
     387                 :             :                                       &finaltype);
     388                 :             : 
     389                 :             :         /*
     390                 :             :          * When finalfnExtraArgs is specified, the finalfn will certainly be
     391                 :             :          * passed at least one null argument, so complain if it's strict.
     392                 :             :          * Nothing bad would happen at runtime (you'd just get a null result),
     393                 :             :          * but it's surely not what the user wants, so let's complain now.
     394                 :             :          */
     395   [ +  +  -  + ]:         147 :         if (finalfnExtraArgs && func_strict(finalfn))
     396         [ #  # ]:           0 :             ereport(ERROR,
     397                 :             :                     (errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
     398                 :             :                      errmsg("final function with extra arguments must not be declared STRICT")));
     399                 :             :     }
     400                 :             :     else
     401                 :             :     {
     402                 :             :         /*
     403                 :             :          * If no finalfn, aggregate result type is type of the state value
     404                 :             :          */
     405                 :         242 :         finaltype = aggTransType;
     406                 :             :     }
     407                 :             :     Assert(OidIsValid(finaltype));
     408                 :             : 
     409                 :             :     /* handle the combinefn, if supplied */
     410         [ +  + ]:         389 :     if (aggcombinefnName)
     411                 :             :     {
     412                 :             :         Oid         combineType;
     413                 :             : 
     414                 :             :         /*
     415                 :             :          * Combine function must have 2 arguments, each of which is the trans
     416                 :             :          * type.  VARIADIC doesn't affect it.
     417                 :             :          */
     418                 :          20 :         fnArgs[0] = aggTransType;
     419                 :          20 :         fnArgs[1] = aggTransType;
     420                 :             : 
     421                 :          20 :         combinefn = lookup_agg_function(aggcombinefnName, 2,
     422                 :             :                                         fnArgs, InvalidOid,
     423                 :             :                                         &combineType);
     424                 :             : 
     425                 :             :         /* Ensure the return type matches the aggregate's trans type */
     426         [ -  + ]:          16 :         if (combineType != aggTransType)
     427         [ #  # ]:           0 :             ereport(ERROR,
     428                 :             :                     (errcode(ERRCODE_DATATYPE_MISMATCH),
     429                 :             :                      errmsg("return type of combine function %s is not %s",
     430                 :             :                             NameListToString(aggcombinefnName),
     431                 :             :                             format_type_be(aggTransType))));
     432                 :             : 
     433                 :             :         /*
     434                 :             :          * A combine function to combine INTERNAL states must accept nulls and
     435                 :             :          * ensure that the returned state is in the correct memory context. We
     436                 :             :          * cannot directly check the latter, but we can check the former.
     437                 :             :          */
     438   [ +  +  -  + ]:          16 :         if (aggTransType == INTERNALOID && func_strict(combinefn))
     439         [ #  # ]:           0 :             ereport(ERROR,
     440                 :             :                     (errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
     441                 :             :                      errmsg("combine function with transition type %s must not be declared STRICT",
     442                 :             :                             format_type_be(aggTransType))));
     443                 :             :     }
     444                 :             : 
     445                 :             :     /*
     446                 :             :      * Validate the serialization function, if present.
     447                 :             :      */
     448         [ +  + ]:         385 :     if (aggserialfnName)
     449                 :             :     {
     450                 :             :         /* signature is always serialize(internal) returns bytea */
     451                 :          16 :         fnArgs[0] = INTERNALOID;
     452                 :             : 
     453                 :          16 :         serialfn = lookup_agg_function(aggserialfnName, 1,
     454                 :             :                                        fnArgs, InvalidOid,
     455                 :             :                                        &rettype);
     456                 :             : 
     457         [ -  + ]:          12 :         if (rettype != BYTEAOID)
     458         [ #  # ]:           0 :             ereport(ERROR,
     459                 :             :                     (errcode(ERRCODE_DATATYPE_MISMATCH),
     460                 :             :                      errmsg("return type of serialization function %s is not %s",
     461                 :             :                             NameListToString(aggserialfnName),
     462                 :             :                             format_type_be(BYTEAOID))));
     463                 :             :     }
     464                 :             : 
     465                 :             :     /*
     466                 :             :      * Validate the deserialization function, if present.
     467                 :             :      */
     468         [ +  + ]:         381 :     if (aggdeserialfnName)
     469                 :             :     {
     470                 :             :         /* signature is always deserialize(bytea, internal) returns internal */
     471                 :          12 :         fnArgs[0] = BYTEAOID;
     472                 :          12 :         fnArgs[1] = INTERNALOID;    /* dummy argument for type safety */
     473                 :             : 
     474                 :          12 :         deserialfn = lookup_agg_function(aggdeserialfnName, 2,
     475                 :             :                                          fnArgs, InvalidOid,
     476                 :             :                                          &rettype);
     477                 :             : 
     478         [ -  + ]:           8 :         if (rettype != INTERNALOID)
     479         [ #  # ]:           0 :             ereport(ERROR,
     480                 :             :                     (errcode(ERRCODE_DATATYPE_MISMATCH),
     481                 :             :                      errmsg("return type of deserialization function %s is not %s",
     482                 :             :                             NameListToString(aggdeserialfnName),
     483                 :             :                             format_type_be(INTERNALOID))));
     484                 :             :     }
     485                 :             : 
     486                 :             :     /*
     487                 :             :      * If finaltype (i.e. aggregate return type) is polymorphic, inputs must
     488                 :             :      * be polymorphic also, else parser will fail to deduce result type.
     489                 :             :      * (Note: given the previous test on transtype and inputs, this cannot
     490                 :             :      * happen, unless someone has snuck a finalfn definition into the catalogs
     491                 :             :      * that itself violates the rule against polymorphic result with no
     492                 :             :      * polymorphic input.)
     493                 :             :      */
     494                 :         377 :     detailmsg = check_valid_polymorphic_signature(finaltype,
     495                 :             :                                                   aggArgTypes,
     496                 :             :                                                   numArgs);
     497         [ -  + ]:         377 :     if (detailmsg)
     498         [ #  # ]:           0 :         ereport(ERROR,
     499                 :             :                 (errcode(ERRCODE_DATATYPE_MISMATCH),
     500                 :             :                  errmsg("cannot determine result data type"),
     501                 :             :                  errdetail_internal("%s", detailmsg)));
     502                 :             : 
     503                 :             :     /*
     504                 :             :      * Also, the return type can't be INTERNAL unless there's at least one
     505                 :             :      * INTERNAL argument.  This is the same type-safety restriction we enforce
     506                 :             :      * for regular functions, but at the level of aggregates.  We must test
     507                 :             :      * this explicitly because we allow INTERNAL as the transtype.
     508                 :             :      */
     509                 :         377 :     detailmsg = check_valid_internal_signature(finaltype,
     510                 :             :                                                aggArgTypes,
     511                 :             :                                                numArgs);
     512         [ -  + ]:         377 :     if (detailmsg)
     513         [ #  # ]:           0 :         ereport(ERROR,
     514                 :             :                 (errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
     515                 :             :                  errmsg("unsafe use of pseudo-type \"internal\""),
     516                 :             :                  errdetail_internal("%s", detailmsg)));
     517                 :             : 
     518                 :             :     /*
     519                 :             :      * If a moving-aggregate implementation is supplied, look up its finalfn
     520                 :             :      * if any, and check that the implied aggregate result type matches the
     521                 :             :      * plain implementation.
     522                 :             :      */
     523         [ +  + ]:         377 :     if (OidIsValid(aggmTransType))
     524                 :             :     {
     525                 :             :         /* handle finalfn, if supplied */
     526         [ -  + ]:          30 :         if (aggmfinalfnName)
     527                 :             :         {
     528                 :             :             /*
     529                 :             :              * The arguments are figured the same way as for the regular
     530                 :             :              * finalfn, but using aggmTransType and mfinalfnExtraArgs.
     531                 :             :              */
     532                 :           0 :             Oid         ffnVariadicArgType = variadicArgType;
     533                 :             : 
     534                 :           0 :             fnArgs[0] = aggmTransType;
     535                 :           0 :             memcpy(fnArgs + 1, aggArgTypes, numArgs * sizeof(Oid));
     536         [ #  # ]:           0 :             if (mfinalfnExtraArgs)
     537                 :           0 :                 nargs_finalfn = numArgs + 1;
     538                 :             :             else
     539                 :             :             {
     540                 :           0 :                 nargs_finalfn = numDirectArgs + 1;
     541         [ #  # ]:           0 :                 if (numDirectArgs < numArgs)
     542                 :             :                 {
     543                 :             :                     /* variadic argument doesn't affect finalfn */
     544                 :           0 :                     ffnVariadicArgType = InvalidOid;
     545                 :             :                 }
     546                 :             :             }
     547                 :             : 
     548                 :           0 :             mfinalfn = lookup_agg_function(aggmfinalfnName, nargs_finalfn,
     549                 :             :                                            fnArgs, ffnVariadicArgType,
     550                 :             :                                            &rettype);
     551                 :             : 
     552                 :             :             /* As above, check strictness if mfinalfnExtraArgs is given */
     553   [ #  #  #  # ]:           0 :             if (mfinalfnExtraArgs && func_strict(mfinalfn))
     554         [ #  # ]:           0 :                 ereport(ERROR,
     555                 :             :                         (errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
     556                 :             :                          errmsg("final function with extra arguments must not be declared STRICT")));
     557                 :             :         }
     558                 :             :         else
     559                 :             :         {
     560                 :             :             /*
     561                 :             :              * If no finalfn, aggregate result type is type of the state value
     562                 :             :              */
     563                 :          30 :             rettype = aggmTransType;
     564                 :             :         }
     565                 :             :         Assert(OidIsValid(rettype));
     566         [ -  + ]:          30 :         if (rettype != finaltype)
     567         [ #  # ]:           0 :             ereport(ERROR,
     568                 :             :                     (errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
     569                 :             :                      errmsg("moving-aggregate implementation returns type %s, but plain implementation returns type %s",
     570                 :             :                             format_type_be(rettype),
     571                 :             :                             format_type_be(finaltype))));
     572                 :             :     }
     573                 :             : 
     574                 :             :     /* handle sortop, if supplied */
     575         [ +  + ]:         377 :     if (aggsortopName)
     576                 :             :     {
     577         [ -  + ]:           4 :         if (numArgs != 1)
     578         [ #  # ]:           0 :             ereport(ERROR,
     579                 :             :                     (errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
     580                 :             :                      errmsg("sort operator can only be specified for single-argument aggregates")));
     581                 :           4 :         sortop = LookupOperName(NULL, aggsortopName,
     582                 :             :                                 aggArgTypes[0], aggArgTypes[0],
     583                 :             :                                 false, -1);
     584                 :             :     }
     585                 :             : 
     586                 :             :     /*
     587                 :             :      * Validate the planner support function, if present.
     588                 :             :      */
     589         [ +  + ]:         377 :     if (aggsupportfuncName)
     590                 :             :     {
     591                 :             :         /* signature is always support(internal) returns internal */
     592                 :           5 :         fnArgs[0] = INTERNALOID;
     593                 :             : 
     594                 :           5 :         supportfn = lookup_agg_function(aggsupportfuncName, 1,
     595                 :             :                                         fnArgs, InvalidOid,
     596                 :             :                                         &rettype);
     597                 :             : 
     598         [ -  + ]:           5 :         if (rettype != INTERNALOID)
     599         [ #  # ]:           0 :             ereport(ERROR,
     600                 :             :                     (errcode(ERRCODE_DATATYPE_MISMATCH),
     601                 :             :                      errmsg("return type of support function %s is not %s",
     602                 :             :                             NameListToString(aggsupportfuncName),
     603                 :             :                             format_type_be(INTERNALOID))));
     604                 :             : 
     605                 :             :         /*
     606                 :             :          * Specifying a support function requires superuser, same as in CREATE
     607                 :             :          * FUNCTION.
     608                 :             :          */
     609         [ -  + ]:           5 :         if (!superuser())
     610         [ #  # ]:           0 :             ereport(ERROR,
     611                 :             :                     (errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
     612                 :             :                      errmsg("must be superuser to specify a support function")));
     613                 :             :     }
     614                 :             : 
     615                 :             :     /*
     616                 :             :      * permission checks on used types
     617                 :             :      */
     618         [ +  + ]:         767 :     for (i = 0; i < numArgs; i++)
     619                 :             :     {
     620                 :         390 :         aclresult = object_aclcheck(TypeRelationId, aggArgTypes[i], GetUserId(), ACL_USAGE);
     621         [ -  + ]:         390 :         if (aclresult != ACLCHECK_OK)
     622                 :           0 :             aclcheck_error_type(aclresult, aggArgTypes[i]);
     623                 :             :     }
     624                 :             : 
     625                 :         377 :     aclresult = object_aclcheck(TypeRelationId, aggTransType, GetUserId(), ACL_USAGE);
     626         [ -  + ]:         377 :     if (aclresult != ACLCHECK_OK)
     627                 :           0 :         aclcheck_error_type(aclresult, aggTransType);
     628                 :             : 
     629         [ +  + ]:         377 :     if (OidIsValid(aggmTransType))
     630                 :             :     {
     631                 :          30 :         aclresult = object_aclcheck(TypeRelationId, aggmTransType, GetUserId(), ACL_USAGE);
     632         [ -  + ]:          30 :         if (aclresult != ACLCHECK_OK)
     633                 :           0 :             aclcheck_error_type(aclresult, aggmTransType);
     634                 :             :     }
     635                 :             : 
     636                 :         377 :     aclresult = object_aclcheck(TypeRelationId, finaltype, GetUserId(), ACL_USAGE);
     637         [ -  + ]:         377 :     if (aclresult != ACLCHECK_OK)
     638                 :           0 :         aclcheck_error_type(aclresult, finaltype);
     639                 :             : 
     640                 :             : 
     641                 :             :     /*
     642                 :             :      * Everything looks okay.  Try to create the pg_proc entry for the
     643                 :             :      * aggregate.  (This could fail if there's already a conflicting entry.)
     644                 :             :      */
     645                 :             : 
     646                 :         377 :     myself = ProcedureCreate(aggName,
     647                 :             :                              aggNamespace,
     648                 :             :                              replace,   /* maybe replacement */
     649                 :             :                              false, /* doesn't return a set */
     650                 :             :                              finaltype, /* returnType */
     651                 :             :                              GetUserId(),   /* proowner */
     652                 :             :                              INTERNALlanguageId,    /* languageObjectId */
     653                 :             :                              InvalidOid,    /* no validator */
     654                 :             :                              "aggregate_dummy", /* placeholder (no such proc) */
     655                 :             :                              NULL,  /* probin */
     656                 :             :                              NULL,  /* prosqlbody */
     657                 :             :                              PROKIND_AGGREGATE,
     658                 :             :                              false, /* security invoker (currently not
     659                 :             :                                      * definable for agg) */
     660                 :             :                              false, /* isLeakProof */
     661                 :             :                              false, /* isStrict (not needed for agg) */
     662                 :             :                              PROVOLATILE_IMMUTABLE, /* volatility (not needed
     663                 :             :                                                      * for agg) */
     664                 :             :                              proparallel,
     665                 :             :                              parameterTypes,    /* paramTypes */
     666                 :             :                              allParameterTypes, /* allParamTypes */
     667                 :             :                              parameterModes,    /* parameterModes */
     668                 :             :                              parameterNames,    /* parameterNames */
     669                 :             :                              parameterDefaults, /* parameterDefaults */
     670                 :             :                              PointerGetDatum(NULL), /* trftypes */
     671                 :             :                              NIL,   /* trfoids */
     672                 :             :                              PointerGetDatum(NULL), /* proconfig */
     673                 :             :                              supportfn, /* prosupport */
     674                 :             :                              1, /* procost */
     675                 :             :                              0);    /* prorows */
     676                 :         369 :     procOid = myself.objectId;
     677                 :             : 
     678                 :             :     /*
     679                 :             :      * Okay to create the pg_aggregate entry.
     680                 :             :      */
     681                 :         369 :     aggdesc = table_open(AggregateRelationId, RowExclusiveLock);
     682                 :         369 :     tupDesc = aggdesc->rd_att;
     683                 :             : 
     684                 :             :     /* initialize nulls and values */
     685         [ +  + ]:        8487 :     for (i = 0; i < Natts_pg_aggregate; i++)
     686                 :             :     {
     687                 :        8118 :         nulls[i] = false;
     688                 :        8118 :         values[i] = (Datum) 0;
     689                 :        8118 :         replaces[i] = true;
     690                 :             :     }
     691                 :         369 :     values[Anum_pg_aggregate_aggfnoid - 1] = ObjectIdGetDatum(procOid);
     692                 :         369 :     values[Anum_pg_aggregate_aggkind - 1] = CharGetDatum(aggKind);
     693                 :         369 :     values[Anum_pg_aggregate_aggnumdirectargs - 1] = Int16GetDatum(numDirectArgs);
     694                 :         369 :     values[Anum_pg_aggregate_aggtransfn - 1] = ObjectIdGetDatum(transfn);
     695                 :         369 :     values[Anum_pg_aggregate_aggfinalfn - 1] = ObjectIdGetDatum(finalfn);
     696                 :         369 :     values[Anum_pg_aggregate_aggcombinefn - 1] = ObjectIdGetDatum(combinefn);
     697                 :         369 :     values[Anum_pg_aggregate_aggserialfn - 1] = ObjectIdGetDatum(serialfn);
     698                 :         369 :     values[Anum_pg_aggregate_aggdeserialfn - 1] = ObjectIdGetDatum(deserialfn);
     699                 :         369 :     values[Anum_pg_aggregate_aggmtransfn - 1] = ObjectIdGetDatum(mtransfn);
     700                 :         369 :     values[Anum_pg_aggregate_aggminvtransfn - 1] = ObjectIdGetDatum(minvtransfn);
     701                 :         369 :     values[Anum_pg_aggregate_aggmfinalfn - 1] = ObjectIdGetDatum(mfinalfn);
     702                 :         369 :     values[Anum_pg_aggregate_aggfinalextra - 1] = BoolGetDatum(finalfnExtraArgs);
     703                 :         369 :     values[Anum_pg_aggregate_aggmfinalextra - 1] = BoolGetDatum(mfinalfnExtraArgs);
     704                 :         369 :     values[Anum_pg_aggregate_aggfinalmodify - 1] = CharGetDatum(finalfnModify);
     705                 :         369 :     values[Anum_pg_aggregate_aggmfinalmodify - 1] = CharGetDatum(mfinalfnModify);
     706                 :         369 :     values[Anum_pg_aggregate_aggsortop - 1] = ObjectIdGetDatum(sortop);
     707                 :         369 :     values[Anum_pg_aggregate_aggtranstype - 1] = ObjectIdGetDatum(aggTransType);
     708                 :         369 :     values[Anum_pg_aggregate_aggtransspace - 1] = Int32GetDatum(aggTransSpace);
     709                 :         369 :     values[Anum_pg_aggregate_aggmtranstype - 1] = ObjectIdGetDatum(aggmTransType);
     710                 :         369 :     values[Anum_pg_aggregate_aggmtransspace - 1] = Int32GetDatum(aggmTransSpace);
     711         [ +  + ]:         369 :     if (agginitval)
     712                 :         219 :         values[Anum_pg_aggregate_agginitval - 1] = CStringGetTextDatum(agginitval);
     713                 :             :     else
     714                 :         150 :         nulls[Anum_pg_aggregate_agginitval - 1] = true;
     715         [ +  + ]:         369 :     if (aggminitval)
     716                 :          10 :         values[Anum_pg_aggregate_aggminitval - 1] = CStringGetTextDatum(aggminitval);
     717                 :             :     else
     718                 :         359 :         nulls[Anum_pg_aggregate_aggminitval - 1] = true;
     719                 :             : 
     720         [ +  + ]:         369 :     if (replace)
     721                 :          12 :         oldtup = SearchSysCache1(AGGFNOID, ObjectIdGetDatum(procOid));
     722                 :             :     else
     723                 :         357 :         oldtup = NULL;
     724                 :             : 
     725         [ +  + ]:         369 :     if (HeapTupleIsValid(oldtup))
     726                 :             :     {
     727                 :          12 :         Form_pg_aggregate oldagg = (Form_pg_aggregate) GETSTRUCT(oldtup);
     728                 :             : 
     729                 :             :         /*
     730                 :             :          * If we're replacing an existing entry, we need to validate that
     731                 :             :          * we're not changing anything that would break callers. Specifically
     732                 :             :          * we must not change aggkind or aggnumdirectargs, which affect how an
     733                 :             :          * aggregate call is treated in parse analysis.
     734                 :             :          */
     735         [ +  + ]:          12 :         if (aggKind != oldagg->aggkind)
     736   [ +  -  +  -  :           4 :             ereport(ERROR,
             -  -  -  - ]
     737                 :             :                     (errcode(ERRCODE_WRONG_OBJECT_TYPE),
     738                 :             :                      errmsg("cannot change routine kind"),
     739                 :             :                      (oldagg->aggkind == AGGKIND_NORMAL ?
     740                 :             :                       errdetail("\"%s\" is an ordinary aggregate function.", aggName) :
     741                 :             :                       oldagg->aggkind == AGGKIND_ORDERED_SET ?
     742                 :             :                       errdetail("\"%s\" is an ordered-set aggregate.", aggName) :
     743                 :             :                       oldagg->aggkind == AGGKIND_HYPOTHETICAL ?
     744                 :             :                       errdetail("\"%s\" is a hypothetical-set aggregate.", aggName) :
     745                 :             :                       0)));
     746         [ -  + ]:           8 :         if (numDirectArgs != oldagg->aggnumdirectargs)
     747         [ #  # ]:           0 :             ereport(ERROR,
     748                 :             :                     (errcode(ERRCODE_INVALID_FUNCTION_DEFINITION),
     749                 :             :                      errmsg("cannot change number of direct arguments of an aggregate function")));
     750                 :             : 
     751                 :           8 :         replaces[Anum_pg_aggregate_aggfnoid - 1] = false;
     752                 :           8 :         replaces[Anum_pg_aggregate_aggkind - 1] = false;
     753                 :           8 :         replaces[Anum_pg_aggregate_aggnumdirectargs - 1] = false;
     754                 :             : 
     755                 :           8 :         tup = heap_modify_tuple(oldtup, tupDesc, values, nulls, replaces);
     756                 :           8 :         CatalogTupleUpdate(aggdesc, &tup->t_self, tup);
     757                 :           8 :         ReleaseSysCache(oldtup);
     758                 :             :     }
     759                 :             :     else
     760                 :             :     {
     761                 :         357 :         tup = heap_form_tuple(tupDesc, values, nulls);
     762                 :         357 :         CatalogTupleInsert(aggdesc, tup);
     763                 :             :     }
     764                 :             : 
     765                 :         365 :     table_close(aggdesc, RowExclusiveLock);
     766                 :             : 
     767                 :             :     /*
     768                 :             :      * Create dependencies for the aggregate (above and beyond those already
     769                 :             :      * made by ProcedureCreate).  Note: we don't need an explicit dependency
     770                 :             :      * on aggTransType since we depend on it indirectly through transfn.
     771                 :             :      * Likewise for aggmTransType using the mtransfn, if it exists.
     772                 :             :      *
     773                 :             :      * If we're replacing an existing definition, ProcedureCreate deleted all
     774                 :             :      * our existing dependencies, so we have to do the same things here either
     775                 :             :      * way.
     776                 :             :      */
     777                 :             : 
     778                 :         365 :     addrs = new_object_addresses();
     779                 :             : 
     780                 :             :     /* Depends on transition function */
     781                 :         365 :     ObjectAddressSet(referenced, ProcedureRelationId, transfn);
     782                 :         365 :     add_exact_object_address(&referenced, addrs);
     783                 :             : 
     784                 :             :     /* Depends on final function, if any */
     785         [ +  + ]:         365 :     if (OidIsValid(finalfn))
     786                 :             :     {
     787                 :         143 :         ObjectAddressSet(referenced, ProcedureRelationId, finalfn);
     788                 :         143 :         add_exact_object_address(&referenced, addrs);
     789                 :             :     }
     790                 :             : 
     791                 :             :     /* Depends on combine function, if any */
     792         [ +  + ]:         365 :     if (OidIsValid(combinefn))
     793                 :             :     {
     794                 :          16 :         ObjectAddressSet(referenced, ProcedureRelationId, combinefn);
     795                 :          16 :         add_exact_object_address(&referenced, addrs);
     796                 :             :     }
     797                 :             : 
     798                 :             :     /* Depends on serialization function, if any */
     799         [ +  + ]:         365 :     if (OidIsValid(serialfn))
     800                 :             :     {
     801                 :           8 :         ObjectAddressSet(referenced, ProcedureRelationId, serialfn);
     802                 :           8 :         add_exact_object_address(&referenced, addrs);
     803                 :             :     }
     804                 :             : 
     805                 :             :     /* Depends on deserialization function, if any */
     806         [ +  + ]:         365 :     if (OidIsValid(deserialfn))
     807                 :             :     {
     808                 :           8 :         ObjectAddressSet(referenced, ProcedureRelationId, deserialfn);
     809                 :           8 :         add_exact_object_address(&referenced, addrs);
     810                 :             :     }
     811                 :             : 
     812                 :             :     /* Depends on forward transition function, if any */
     813         [ +  + ]:         365 :     if (OidIsValid(mtransfn))
     814                 :             :     {
     815                 :          30 :         ObjectAddressSet(referenced, ProcedureRelationId, mtransfn);
     816                 :          30 :         add_exact_object_address(&referenced, addrs);
     817                 :             :     }
     818                 :             : 
     819                 :             :     /* Depends on inverse transition function, if any */
     820         [ +  + ]:         365 :     if (OidIsValid(minvtransfn))
     821                 :             :     {
     822                 :          30 :         ObjectAddressSet(referenced, ProcedureRelationId, minvtransfn);
     823                 :          30 :         add_exact_object_address(&referenced, addrs);
     824                 :             :     }
     825                 :             : 
     826                 :             :     /* Depends on final function, if any */
     827         [ -  + ]:         365 :     if (OidIsValid(mfinalfn))
     828                 :             :     {
     829                 :           0 :         ObjectAddressSet(referenced, ProcedureRelationId, mfinalfn);
     830                 :           0 :         add_exact_object_address(&referenced, addrs);
     831                 :             :     }
     832                 :             : 
     833                 :             :     /* Depends on sort operator, if any */
     834         [ +  + ]:         365 :     if (OidIsValid(sortop))
     835                 :             :     {
     836                 :           4 :         ObjectAddressSet(referenced, OperatorRelationId, sortop);
     837                 :           4 :         add_exact_object_address(&referenced, addrs);
     838                 :             :     }
     839                 :             : 
     840                 :         365 :     record_object_address_dependencies(&myself, addrs, DEPENDENCY_NORMAL);
     841                 :         365 :     free_object_addresses(addrs);
     842                 :         365 :     return myself;
     843                 :             : }
     844                 :             : 
     845                 :             : /*
     846                 :             :  * lookup_agg_function
     847                 :             :  * common code for finding aggregate support functions
     848                 :             :  *
     849                 :             :  * fnName: possibly-schema-qualified function name
     850                 :             :  * nargs, input_types: expected function argument types
     851                 :             :  * variadicArgType: type of variadic argument if any, else InvalidOid
     852                 :             :  *
     853                 :             :  * Returns OID of function, and stores its return type into *rettype
     854                 :             :  *
     855                 :             :  * NB: must not scribble on input_types[], as we may re-use those
     856                 :             :  */
     857                 :             : static Oid
     858                 :         773 : lookup_agg_function(List *fnName,
     859                 :             :                     int nargs,
     860                 :             :                     Oid *input_types,
     861                 :             :                     Oid variadicArgType,
     862                 :             :                     Oid *rettype)
     863                 :             : {
     864                 :             :     Oid         fnOid;
     865                 :             :     bool        retset;
     866                 :             :     int         nvargs;
     867                 :             :     Oid         vatype;
     868                 :             :     Oid        *true_oid_array;
     869                 :             :     FuncDetailCode fdresult;
     870                 :             :     int         fgc_flags;
     871                 :             :     AclResult   aclresult;
     872                 :             :     int         i;
     873                 :             : 
     874                 :             :     /*
     875                 :             :      * func_get_detail looks up the function in the catalogs, does
     876                 :             :      * disambiguation for polymorphic functions, handles inheritance, and
     877                 :             :      * returns the funcid and type and set or singleton status of the
     878                 :             :      * function's return value.  it also returns the true argument types to
     879                 :             :      * the function.
     880                 :             :      */
     881                 :         773 :     fdresult = func_get_detail(fnName, NIL, NIL,
     882                 :             :                                nargs, input_types, false, false, false,
     883                 :             :                                &fgc_flags,
     884                 :             :                                &fnOid, rettype, &retset,
     885                 :             :                                &nvargs, &vatype,
     886                 :             :                                &true_oid_array, NULL);
     887                 :             : 
     888                 :             :     /* only valid case is a normal function not returning a set */
     889   [ +  +  -  + ]:         773 :     if (fdresult != FUNCDETAIL_NORMAL || !OidIsValid(fnOid))
     890         [ +  - ]:          96 :         ereport(ERROR,
     891                 :             :                 (errcode(ERRCODE_UNDEFINED_FUNCTION),
     892                 :             :                  errmsg("function %s does not exist",
     893                 :             :                         func_signature_string(fnName, nargs,
     894                 :             :                                               NIL, input_types))));
     895         [ -  + ]:         677 :     if (retset)
     896         [ #  # ]:           0 :         ereport(ERROR,
     897                 :             :                 (errcode(ERRCODE_DATATYPE_MISMATCH),
     898                 :             :                  errmsg("function %s returns a set",
     899                 :             :                         func_signature_string(fnName, nargs,
     900                 :             :                                               NIL, input_types))));
     901                 :             : 
     902                 :             :     /*
     903                 :             :      * If the agg is declared to take VARIADIC ANY, the underlying functions
     904                 :             :      * had better be declared that way too, else they may receive too many
     905                 :             :      * parameters; but func_get_detail would have been happy with plain ANY.
     906                 :             :      * (Probably nothing very bad would happen, but it wouldn't work as the
     907                 :             :      * user expects.)  Other combinations should work without any special
     908                 :             :      * pushups, given that we told func_get_detail not to expand VARIADIC.
     909                 :             :      */
     910   [ +  +  -  + ]:         677 :     if (variadicArgType == ANYOID && vatype != ANYOID)
     911         [ #  # ]:           0 :         ereport(ERROR,
     912                 :             :                 (errcode(ERRCODE_DATATYPE_MISMATCH),
     913                 :             :                  errmsg("function %s must accept VARIADIC ANY to be used in this aggregate",
     914                 :             :                         func_signature_string(fnName, nargs,
     915                 :             :                                               NIL, input_types))));
     916                 :             : 
     917                 :             :     /*
     918                 :             :      * If there are any polymorphic types involved, enforce consistency, and
     919                 :             :      * possibly refine the result type.  It's OK if the result is still
     920                 :             :      * polymorphic at this point, though.
     921                 :             :      */
     922                 :         677 :     *rettype = enforce_generic_type_consistency(input_types,
     923                 :             :                                                 true_oid_array,
     924                 :             :                                                 nargs,
     925                 :             :                                                 *rettype,
     926                 :             :                                                 true);
     927                 :             : 
     928                 :             :     /*
     929                 :             :      * func_get_detail will find functions requiring run-time argument type
     930                 :             :      * coercion, but nodeAgg.c isn't prepared to deal with that
     931                 :             :      */
     932         [ +  + ]:        1882 :     for (i = 0; i < nargs; i++)
     933                 :             :     {
     934         [ +  + ]:        1213 :         if (!IsBinaryCoercible(input_types[i], true_oid_array[i]))
     935         [ +  - ]:           8 :             ereport(ERROR,
     936                 :             :                     (errcode(ERRCODE_DATATYPE_MISMATCH),
     937                 :             :                      errmsg("function %s requires run-time type coercion",
     938                 :             :                             func_signature_string(fnName, nargs,
     939                 :             :                                                   NIL, true_oid_array))));
     940                 :             :     }
     941                 :             : 
     942                 :             :     /* Check aggregate creator has permission to call the function */
     943                 :         669 :     aclresult = object_aclcheck(ProcedureRelationId, fnOid, GetUserId(), ACL_EXECUTE);
     944         [ -  + ]:         669 :     if (aclresult != ACLCHECK_OK)
     945                 :           0 :         aclcheck_error(aclresult, OBJECT_FUNCTION, get_func_name(fnOid));
     946                 :             : 
     947                 :         669 :     return fnOid;
     948                 :             : }
        

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