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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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13
src/backend/nodes/equalfuncs.c
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@@ -18,7 +18,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/equalfuncs.c,v 1.176 2002/12/12 20:35:12 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/equalfuncs.c,v 1.177 2002/12/14 00:17:51 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -296,16 +296,17 @@ _equalSubLink(SubLink *a, SubLink *b)
}
static bool
_equalSubPlanExpr(SubPlanExpr *a, SubPlanExpr *b)
_equalSubPlan(SubPlan *a, SubPlan *b)
{
COMPARE_SCALAR_FIELD(typeOid);
COMPARE_SCALAR_FIELD(subLinkType);
COMPARE_SCALAR_FIELD(useor);
COMPARE_NODE_FIELD(oper);
/* should compare plans, but have to settle for comparing plan IDs */
COMPARE_SCALAR_FIELD(plan_id);
COMPARE_NODE_FIELD(rtable);
COMPARE_INTLIST_FIELD(setParam);
COMPARE_INTLIST_FIELD(parParam);
COMPARE_NODE_FIELD(args);
COMPARE_NODE_FIELD(sublink);
return true;
}
@@ -1561,8 +1562,8 @@ equal(void *a, void *b)
case T_SubLink:
retval = _equalSubLink(a, b);
break;
case T_SubPlanExpr:
retval = _equalSubPlanExpr(a, b);
case T_SubPlan:
retval = _equalSubPlan(a, b);
break;
case T_FieldSelect:
retval = _equalFieldSelect(a, b);