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Diffstat (limited to '')
-rw-r--r-- | src/include/executor/functions.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/src/include/executor/functions.h b/src/include/executor/functions.h new file mode 100644 index 0000000..4c20cf4 --- /dev/null +++ b/src/include/executor/functions.h @@ -0,0 +1,55 @@ +/*------------------------------------------------------------------------- + * + * functions.h + * Declarations for execution of SQL-language functions. + * + * + * Portions Copyright (c) 1996-2022, 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" + +/* + * 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 DestReceiver *CreateSQLFunctionDestReceiver(void); + +#endif /* FUNCTIONS_H */ |