|  | /*-------------------------------------------------------------------------
 *
 * functions.h
 *		Declarations for execution of SQL-language functions.
 *
 *
 * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/executor/functions.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef FUNCTIONS_H
#define FUNCTIONS_H
#include "nodes/execnodes.h"
#include "tcop/dest.h"
/* This struct is known only within executor/functions.c */
typedef struct 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 *queryTreeList);
extern bool check_sql_fn_retval(Oid func_id, Oid rettype,
								List *queryTreeList,
								bool *modifyTargetList,
								JunkFilter **junkFilter);
extern DestReceiver *CreateSQLFunctionDestReceiver(void);
#endif							/* FUNCTIONS_H */
 |