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Clean up plantree representation of SubPlan-s --- SubLink does not appear

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in the planned representation of a subplan at all any more, only SubPlan.
This means subselect.c doesn't scribble on its input anymore, which seems
like a good thing; and there are no longer three different possible
interpretations of a SubLink.  Simplify node naming and improve comments
in primnodes.h.  No change to stored rules, though.
This commit is contained in:
Tom Lane
2002-12-14 00:17:59 +00:00
parent 29cdab3d53
commit 2d8d66628a
24 changed files with 355 additions and 356 deletions
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16
src/backend/executor/execProcnode.c
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@ -12,7 +12,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/executor/execProcnode.c,v 1.33 2002/12/13 19:45:52 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/executor/execProcnode.c,v 1.34 2002/12/14 00:17:50 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -228,10 +228,10 @@ ExecInitNode(Plan *node, EState *estate)
subps = NIL;
foreach(subp, node->initPlan)
{
SubPlanExpr *subplan = (SubPlanExpr *) lfirst(subp);
SubPlanExprState *sstate;
SubPlan *subplan = (SubPlan *) lfirst(subp);
SubPlanState *sstate;
Assert(IsA(subplan, SubPlanExpr));
Assert(IsA(subplan, SubPlan));
sstate = ExecInitExprInitPlan(subplan, result);
ExecInitSubPlan(sstate, estate);
subps = lappend(subps, sstate);
@ -247,9 +247,9 @@ ExecInitNode(Plan *node, EState *estate)
subps = NIL;
foreach(subp, result->subPlan)
{
SubPlanExprState *sstate = (SubPlanExprState *) lfirst(subp);
SubPlanState *sstate = (SubPlanState *) lfirst(subp);
Assert(IsA(sstate, SubPlanExprState));
Assert(IsA(sstate, SubPlanState));
ExecInitSubPlan(sstate, estate);
subps = lappend(subps, sstate);
}
@ -500,9 +500,9 @@ ExecEndNode(PlanState *node)
/* Clean up initPlans and subPlans */
foreach(subp, node->initPlan)
ExecEndSubPlan((SubPlanExprState *) lfirst(subp));
ExecEndSubPlan((SubPlanState *) lfirst(subp));
foreach(subp, node->subPlan)
ExecEndSubPlan((SubPlanExprState *) lfirst(subp));
ExecEndSubPlan((SubPlanState *) lfirst(subp));
if (node->chgParam != NIL)
{