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execution state trees, and ExecEvalExpr takes an expression state tree not an expression plan tree. The plan tree is now read-only as far as the executor is concerned. Next step is to begin actually exploiting this property.
29 lines
881 B
C
29 lines
881 B
C
/*-------------------------------------------------------------------------
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*
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* nodeSubplan.h
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*
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*
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*
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* Portions Copyright (c) 1996-2002, 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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* $Id: nodeSubplan.h,v 1.14 2002/12/13 19:45:56 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef NODESUBPLAN_H
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#define NODESUBPLAN_H
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#include "nodes/execnodes.h"
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extern void ExecInitSubPlan(SubPlanExprState *sstate, EState *estate);
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extern Datum ExecSubPlan(SubPlanExprState *node,
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ExprContext *econtext,
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bool *isNull);
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extern void ExecEndSubPlan(SubPlanExprState *node);
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extern void ExecReScanSetParamPlan(SubPlanExprState *node, PlanState *parent);
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extern void ExecSetParamPlan(SubPlanExprState *node, ExprContext *econtext);
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#endif /* NODESUBPLAN_H */
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