Files
postgres/src/include/executor/nodeAgg.h
T
Tom Lane 902a6a0a4b Restructure representation of aggregate functions so that they have pg_proc
entries, per pghackers discussion.  This fixes aggregates to live in
namespaces, and also simplifies/speeds up lookup in parse_func.c.
Also, add a 'proimplicit' flag to pg_proc that controls whether a type
coercion function may be invoked implicitly, or only explicitly.  The
current settings of these flags are more permissive than I would like,
but we will need to debate and refine the behavior; for now, I avoided
breaking regression tests as much as I could.
2002-04-11 20:00:18 +00:00

29 lines
807 B
C

/*-------------------------------------------------------------------------
*
* nodeAgg.h
*
*
*
* Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: nodeAgg.h,v 1.16 2002/04/11 20:00:14 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef NODEAGG_H
#define NODEAGG_H
#include "fmgr.h"
#include "nodes/plannodes.h"
extern TupleTableSlot *ExecAgg(Agg *node);
extern bool ExecInitAgg(Agg *node, EState *estate, Plan *parent);
extern int ExecCountSlotsAgg(Agg *node);
extern void ExecEndAgg(Agg *node);
extern void ExecReScanAgg(Agg *node, ExprContext *exprCtxt, Plan *parent);
extern Datum aggregate_dummy(PG_FUNCTION_ARGS);
#endif /* NODEAGG_H */