| /*------------------------------------------------------------------------- | |
| * | |
| * functions.h | |
| * Declarations for execution of SQL-language functions. | |
| * | |
| * | |
| * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group | |
| * Portions Copyright (c) 1994, Regents of the University of California | |
| * | |
| * src/include/executor/functions.h | |
| * | |
| *------------------------------------------------------------------------- | |
| */ | |
| /* | |
| * Data structure needed by the parser callback hooks to resolve parameter | |
| * references during parsing of a SQL function's body. This is separate from | |
| * SQLFunctionCache since we sometimes do parsing separately from execution. | |
| */ | |
| typedef struct SQLFunctionParseInfo | |
| { | |
| char *fname; /* function's name */ | |
| int nargs; /* number of input arguments */ | |
| Oid *argtypes; /* resolved types of input arguments */ | |
| char **argnames; /* names of input arguments; NULL if none */ | |
| /* Note that argnames[i] can be NULL, if some args are unnamed */ | |
| Oid collation; /* function's input collation, if known */ | |
| } SQLFunctionParseInfo; | |
| typedef SQLFunctionParseInfo *SQLFunctionParseInfoPtr; | |
| extern Datum fmgr_sql(PG_FUNCTION_ARGS); | |
| extern SQLFunctionParseInfoPtr prepare_sql_fn_parse_info(HeapTuple procedureTuple, | |
| Node *call_expr, | |
| Oid inputCollation); | |
| extern void sql_fn_parser_setup(struct ParseState *pstate, | |
| SQLFunctionParseInfoPtr pinfo); | |
| extern void check_sql_fn_statements(List *queryTreeLists); | |
| extern bool check_sql_fn_retval(List *queryTreeLists, | |
| Oid rettype, TupleDesc rettupdesc, | |
| bool insertDroppedCols, | |
| List **resultTargetList); | |
| extern bool check_sql_fn_retval_ext(List *queryTreeLists, | |
| Oid rettype, TupleDesc rettupdesc, | |
| char prokind, | |
| bool insertDroppedCols, | |
| List **resultTargetList); | |
| extern DestReceiver *CreateSQLFunctionDestReceiver(void); | |