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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/include/optimizer/clauses.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Id: clauses.h,v 1.57 2002/12/12 15:49:41 tgl Exp $
* $Id: clauses.h,v 1.58 2002/12/14 00:17:59 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -20,7 +20,7 @@
#define is_opclause(clause) ((clause) != NULL && IsA(clause, OpExpr))
#define is_funcclause(clause) ((clause) != NULL && IsA(clause, FuncExpr))
#define is_subplan(clause) ((clause) != NULL && IsA(clause, SubPlanExpr))
#define is_subplan(clause) ((clause) != NULL && IsA(clause, SubPlan))
extern Expr *make_opclause(Oid opno, Oid opresulttype, bool opretset,