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Clean up plantree representation of SubPlan-s --- SubLink does not appear
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.
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@ -15,7 +15,7 @@
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.232 2002/12/13 19:45:56 tgl Exp $
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* $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.233 2002/12/14 00:17:50 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -818,21 +818,22 @@ _copySubLink(SubLink *from)
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}
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/*
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* _copySubPlanExpr
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* _copySubPlan
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*/
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static SubPlanExpr *
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_copySubPlanExpr(SubPlanExpr *from)
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static SubPlan *
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_copySubPlan(SubPlan *from)
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{
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SubPlanExpr *newnode = makeNode(SubPlanExpr);
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SubPlan *newnode = makeNode(SubPlan);
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COPY_SCALAR_FIELD(typeOid);
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COPY_SCALAR_FIELD(subLinkType);
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COPY_SCALAR_FIELD(useor);
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COPY_NODE_FIELD(oper);
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COPY_NODE_FIELD(plan);
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COPY_SCALAR_FIELD(plan_id);
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COPY_NODE_FIELD(rtable);
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COPY_INTLIST_FIELD(setParam);
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COPY_INTLIST_FIELD(parParam);
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COPY_NODE_FIELD(args);
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COPY_NODE_FIELD(sublink);
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return newnode;
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}
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@ -2431,8 +2432,8 @@ copyObject(void *from)
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case T_SubLink:
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retval = _copySubLink(from);
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break;
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case T_SubPlanExpr:
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retval = _copySubPlanExpr(from);
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case T_SubPlan:
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retval = _copySubPlan(from);
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break;
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case T_FieldSelect:
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retval = _copyFieldSelect(from);
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