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First cut at full support for OUTER JOINs. There are still a few loose

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ends to clean up (see my message of same date to pghackers), but mostly
it works.  INITDB REQUIRED!
This commit is contained in:
Tom Lane
2000-09-12 21:07:18 +00:00
parent b5c0ab278b
commit ed5003c584
93 changed files with 6386 additions and 4262 deletions
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17
src/backend/optimizer/plan/setrefs.c
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@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/optimizer/plan/setrefs.c,v 1.64 2000/06/04 20:50:50 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/optimizer/plan/setrefs.c,v 1.65 2000/09/12 21:06:54 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -106,11 +106,13 @@ set_plan_references(Plan *plan)
set_join_references((Join *) plan);
fix_expr_references(plan, (Node *) plan->targetlist);
fix_expr_references(plan, (Node *) plan->qual);
fix_expr_references(plan, (Node *) ((Join *) plan)->joinqual);
break;
case T_MergeJoin:
set_join_references((Join *) plan);
fix_expr_references(plan, (Node *) plan->targetlist);
fix_expr_references(plan, (Node *) plan->qual);
fix_expr_references(plan, (Node *) ((Join *) plan)->joinqual);
fix_expr_references(plan,
(Node *) ((MergeJoin *) plan)->mergeclauses);
break;
@ -118,6 +120,7 @@ set_plan_references(Plan *plan)
set_join_references((Join *) plan);
fix_expr_references(plan, (Node *) plan->targetlist);
fix_expr_references(plan, (Node *) plan->qual);
fix_expr_references(plan, (Node *) ((Join *) plan)->joinqual);
fix_expr_references(plan,
(Node *) ((HashJoin *) plan)->hashclauses);
break;
@ -236,15 +239,15 @@ fix_expr_references(Plan *plan, Node *node)
static void
set_join_references(Join *join)
{
Plan *outer = join->lefttree;
Plan *inner = join->righttree;
Plan *outer = join->plan.lefttree;
Plan *inner = join->plan.righttree;
List *outer_tlist = ((outer == NULL) ? NIL : outer->targetlist);
List *inner_tlist = ((inner == NULL) ? NIL : inner->targetlist);
join->targetlist = join_references(join->targetlist,
outer_tlist,
inner_tlist,
(Index) 0);
join->plan.targetlist = join_references(join->plan.targetlist,
outer_tlist,
inner_tlist,
(Index) 0);
}
/*