codekingpro/portable-devtools

1/*-------------------------------------------------------------------------2 *3 * functions.h4 *		Declarations for execution of SQL-language functions.5 *6 *7 * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group8 * Portions Copyright (c) 1994, Regents of the University of California9 *10 * src/include/executor/functions.h11 *12 *-------------------------------------------------------------------------13 */14#ifndef FUNCTIONS_H15#define FUNCTIONS_H16 17#include "nodes/execnodes.h"18#include "tcop/dest.h"19 20/*21 * Data structure needed by the parser callback hooks to resolve parameter22 * references during parsing of a SQL function's body.  This is separate from23 * SQLFunctionCache since we sometimes do parsing separately from execution.24 */25typedef struct SQLFunctionParseInfo26{27	char	   *fname;			/* function's name */28	int			nargs;			/* number of input arguments */29	Oid		   *argtypes;		/* resolved types of input arguments */30	char	  **argnames;		/* names of input arguments; NULL if none */31	/* Note that argnames[i] can be NULL, if some args are unnamed */32	Oid			collation;		/* function's input collation, if known */33} SQLFunctionParseInfo;34 35typedef SQLFunctionParseInfo *SQLFunctionParseInfoPtr;36 37extern Datum fmgr_sql(PG_FUNCTION_ARGS);38 39extern SQLFunctionParseInfoPtr prepare_sql_fn_parse_info(HeapTuple procedureTuple,40														 Node *call_expr,41														 Oid inputCollation);42 43extern void sql_fn_parser_setup(struct ParseState *pstate,44								SQLFunctionParseInfoPtr pinfo);45 46extern void check_sql_fn_statements(List *queryTreeLists);47 48extern bool check_sql_fn_retval(List *queryTreeLists,49								Oid rettype, TupleDesc rettupdesc,50								bool insertDroppedCols,51								List **resultTargetList);52 53extern bool check_sql_fn_retval_ext(List *queryTreeLists,54									Oid rettype, TupleDesc rettupdesc,55									char prokind,56									bool insertDroppedCols,57									List **resultTargetList);58 59extern DestReceiver *CreateSQLFunctionDestReceiver(void);60 61#endif							/* FUNCTIONS_H */62