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9b46abb7c4
RETURNING clause, not just a SELECT as formerly. A side effect of this patch is that when a set-returning SQL function is used in a FROM clause, performance is improved because the output is collected into a tuplestore within the function, rather than using the less efficient value-per-call mechanism.
30 lines
846 B
C
30 lines
846 B
C
/*-------------------------------------------------------------------------
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*
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* functions.h
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* Declarations for execution of SQL-language functions.
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*
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*
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* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $PostgreSQL: pgsql/src/include/executor/functions.h,v 1.32 2008/10/31 19:37:56 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef FUNCTIONS_H
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#define FUNCTIONS_H
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#include "nodes/execnodes.h"
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#include "tcop/dest.h"
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extern Datum fmgr_sql(PG_FUNCTION_ARGS);
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extern bool check_sql_fn_retval(Oid func_id, Oid rettype,
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List *queryTreeList,
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bool insertRelabels,
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JunkFilter **junkFilter);
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extern DestReceiver *CreateSQLFunctionDestReceiver(void);
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#endif /* FUNCTIONS_H */
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