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Get rid of the separate EState for subplans, and just let them share the

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parent query's EState.  Now that there's a single flat rangetable for both
the main plan and subplans, there's no need anymore for a separate EState,
and removing it allows cleaning up some crufty code in nodeSubplan.c and
nodeSubqueryscan.c.  Should be a tad faster too, although any difference
will probably be hard to measure.  This is the last bit of subsidiary
mop-up work from changing to a flat rangetable.
This commit is contained in:
Tom Lane
2007-02-27 01:11:26 +00:00
parent 4756ff3dca
commit c7ff7663e4
15 changed files with 258 additions and 358 deletions
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6
src/include/executor/nodeSubplan.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/executor/nodeSubplan.h,v 1.25 2007/01/05 22:19:54 momjian Exp $
* $PostgreSQL: pgsql/src/include/executor/nodeSubplan.h,v 1.26 2007/02/27 01:11:26 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -16,12 +16,12 @@
#include "nodes/execnodes.h"
extern void ExecInitSubPlan(SubPlanState *node, EState *estate, int eflags);
extern SubPlanState *ExecInitSubPlan(SubPlan *subplan, PlanState *parent);
extern Datum ExecSubPlan(SubPlanState *node,
ExprContext *econtext,
bool *isNull,
ExprDoneCond *isDone);
extern void ExecEndSubPlan(SubPlanState *node);
extern void ExecReScanSetParamPlan(SubPlanState *node, PlanState *parent);
extern void ExecSetParamPlan(SubPlanState *node, ExprContext *econtext);