greenplumn functions 源码
greenplumn functions 代码
文件路径：/src/include/executor/functions.h
/*-------------------------------------------------------------------------
*
* 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);
extern void querytree_safe_for_qe(Node *node);
#endif /* FUNCTIONS_H */
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