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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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4
src/backend/utils/adt/ruleutils.c
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@@ -3,7 +3,7 @@
* back to source text
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/ruleutils.c,v 1.128 2002/12/12 15:49:40 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/ruleutils.c,v 1.129 2002/12/14 00:17:59 tgl Exp $
*
* This software is copyrighted by Jan Wieck - Hamburg.
*
@@ -2099,7 +2099,7 @@ get_rule_expr(Node *node, deparse_context *context,
get_sublink_expr((SubLink *) node, context);
break;
case T_SubPlanExpr:
case T_SubPlan:
{
/*
* We cannot see an already-planned subplan in