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Further tweaking of parsetree & plantree representation of SubLinks.

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Simplify SubLink by storing just a List of operator OIDs, instead of
a list of incomplete OpExprs --- that was a bizarre and bulky choice,
with no redeeming social value since we have to build new OpExprs
anyway when forming the plan tree.
This commit is contained in:
Tom Lane
2003-01-10 21:08:15 +00:00
parent 36ea26793a
commit e69785debf
17 changed files with 407 additions and 246 deletions
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10
src/backend/optimizer/util/var.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/util/var.c,v 1.42 2002/12/14 00:17:59 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/util/var.c,v 1.43 2003/01/10 21:08:13 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -107,13 +107,13 @@ pull_varnos_walker(Node *node, pull_varnos_context *context)
{
/*
* Already-planned subquery. Examine the args list (parameters to
* be passed to subquery), as well as the "oper" list which is
* be passed to subquery), as well as the exprs list which is
* executed by the outer query. But short-circuit recursion into
* the subquery itself, which would be a waste of effort.
*/
SubPlan *subplan = (SubPlan *) node;
if (pull_varnos_walker((Node *) subplan->oper,
if (pull_varnos_walker((Node *) subplan->exprs,
context))
return true;
if (pull_varnos_walker((Node *) subplan->args,
@ -190,13 +190,13 @@ contain_var_reference_walker(Node *node,
{
/*
* Already-planned subquery. Examine the args list (parameters to
* be passed to subquery), as well as the "oper" list which is
* be passed to subquery), as well as the exprs list which is
* executed by the outer query. But short-circuit recursion into
* the subquery itself, which would be a waste of effort.
*/
SubPlan *subplan = (SubPlan *) node;
if (contain_var_reference_walker((Node *) subplan->oper,
if (contain_var_reference_walker((Node *) subplan->exprs,
context))
return true;
if (contain_var_reference_walker((Node *) subplan->args,