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Support window functions a la SQL:2008.

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Hitoshi Harada, with some kibitzing from Heikki and Tom.
This commit is contained in:
Tom Lane
2008-12-28 18:54:01 +00:00
parent 38e9348282
commit 95b07bc7f5
92 changed files with 6720 additions and 321 deletions
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25
src/include/executor/nodeWindowAgg.h Normal file
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/*-------------------------------------------------------------------------
*
* nodeWindowAgg.h
* prototypes for nodeWindowAgg.c
*
*
* Portions Copyright (c) 1996-2008, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/executor/nodeWindowAgg.h,v 1.1 2008/12/28 18:54:00 tgl Exp $
*
*-------------------------------------------------------------------------
*/
#ifndef NODEWINDOWAGG_H
#define NODEWINDOWAGG_H
#include "nodes/execnodes.h"
extern int ExecCountSlotsWindowAgg(WindowAgg *node);
extern WindowAggState *ExecInitWindowAgg(WindowAgg *node, EState *estate, int eflags);
extern TupleTableSlot *ExecWindowAgg(WindowAggState *node);
extern void ExecEndWindowAgg(WindowAggState *node);
extern void ExecReScanWindowAgg(WindowAggState *node, ExprContext *exprCtxt);
#endif /* NODEWINDOWAGG_H */