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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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5
src/include/executor/executor.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/executor.h,v 1.138 2007/02/22 22:00:25 tgl Exp $
* $PostgreSQL: pgsql/src/include/executor/executor.h,v 1.139 2007/02/27 01:11:25 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -130,7 +130,6 @@ extern TupleTableSlot *ExecutorRun(QueryDesc *queryDesc,
ScanDirection direction, long count);
extern void ExecutorEnd(QueryDesc *queryDesc);
extern void ExecutorRewind(QueryDesc *queryDesc);
extern void ExecEndPlan(PlanState *planstate, EState *estate);
extern bool ExecContextForcesOids(PlanState *planstate, bool *hasoids);
extern void ExecConstraints(ResultRelInfo *resultRelInfo,
TupleTableSlot *slot, EState *estate);
@ -167,7 +166,6 @@ extern Tuplestorestate *ExecMakeTableFunctionResult(ExprState *funcexpr,
extern Datum ExecEvalExprSwitchContext(ExprState *expression, ExprContext *econtext,
bool *isNull, ExprDoneCond *isDone);
extern ExprState *ExecInitExpr(Expr *node, PlanState *parent);
extern SubPlanState *ExecInitExprInitPlan(SubPlan *node, PlanState *parent);
extern ExprState *ExecPrepareExpr(Expr *node, EState *estate);
extern bool ExecQual(List *qual, ExprContext *econtext, bool resultForNull);
extern int ExecTargetListLength(List *targetlist);
@ -227,7 +225,6 @@ extern void end_tup_output(TupOutputState *tstate);
* prototypes from functions in execUtils.c
*/
extern EState *CreateExecutorState(void);
extern EState *CreateSubExecutorState(EState *parent_estate);
extern void FreeExecutorState(EState *estate);
extern ExprContext *CreateExprContext(EState *estate);
extern ExprContext *CreateStandaloneExprContext(void);