diff options
Diffstat (limited to 'src/backend/optimizer/plan/setrefs.c')
| -rw-r--r-- | src/backend/optimizer/plan/setrefs.c | 39 |
1 files changed, 1 insertions, 38 deletions
diff --git a/src/backend/optimizer/plan/setrefs.c b/src/backend/optimizer/plan/setrefs.c index c76d67b93e5..1b5c72e163c 100644 --- a/src/backend/optimizer/plan/setrefs.c +++ b/src/backend/optimizer/plan/setrefs.c @@ -9,7 +9,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/optimizer/plan/setrefs.c,v 1.87 2003/01/10 21:08:11 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/optimizer/plan/setrefs.c,v 1.88 2003/01/13 18:10:53 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -42,7 +42,6 @@ typedef struct static void fix_expr_references(Plan *plan, Node *node); static bool fix_expr_references_walker(Node *node, void *context); -static void mark_qual_expressions(List *quals); static void set_join_references(Join *join, List *rtable); static void set_uppernode_references(Plan *plan, Index subvarno); static Node *join_references_mutator(Node *node, @@ -89,12 +88,10 @@ set_plan_references(Plan *plan, List *rtable) case T_SeqScan: fix_expr_references(plan, (Node *) plan->targetlist); fix_expr_references(plan, (Node *) plan->qual); - mark_qual_expressions(plan->qual); break; case T_IndexScan: fix_expr_references(plan, (Node *) plan->targetlist); fix_expr_references(plan, (Node *) plan->qual); - mark_qual_expressions(plan->qual); fix_expr_references(plan, (Node *) ((IndexScan *) plan)->indxqual); fix_expr_references(plan, @@ -103,7 +100,6 @@ set_plan_references(Plan *plan, List *rtable) case T_TidScan: fix_expr_references(plan, (Node *) plan->targetlist); fix_expr_references(plan, (Node *) plan->qual); - mark_qual_expressions(plan->qual); fix_expr_references(plan, (Node *) ((TidScan *) plan)->tideval); break; @@ -118,7 +114,6 @@ set_plan_references(Plan *plan, List *rtable) */ fix_expr_references(plan, (Node *) plan->targetlist); fix_expr_references(plan, (Node *) plan->qual); - mark_qual_expressions(plan->qual); /* Recurse into subplan too */ rte = rt_fetch(((SubqueryScan *) plan)->scan.scanrelid, @@ -134,7 +129,6 @@ set_plan_references(Plan *plan, List *rtable) fix_expr_references(plan, (Node *) plan->targetlist); fix_expr_references(plan, (Node *) plan->qual); - mark_qual_expressions(plan->qual); rte = rt_fetch(((FunctionScan *) plan)->scan.scanrelid, rtable); Assert(rte->rtekind == RTE_FUNCTION); @@ -145,17 +139,13 @@ set_plan_references(Plan *plan, List *rtable) set_join_references((Join *) plan, rtable); fix_expr_references(plan, (Node *) plan->targetlist); fix_expr_references(plan, (Node *) plan->qual); - mark_qual_expressions(plan->qual); fix_expr_references(plan, (Node *) ((Join *) plan)->joinqual); - mark_qual_expressions(((Join *) plan)->joinqual); break; case T_MergeJoin: set_join_references((Join *) plan, rtable); fix_expr_references(plan, (Node *) plan->targetlist); fix_expr_references(plan, (Node *) plan->qual); - mark_qual_expressions(plan->qual); fix_expr_references(plan, (Node *) ((Join *) plan)->joinqual); - mark_qual_expressions(((Join *) plan)->joinqual); fix_expr_references(plan, (Node *) ((MergeJoin *) plan)->mergeclauses); break; @@ -163,9 +153,7 @@ set_plan_references(Plan *plan, List *rtable) set_join_references((Join *) plan, rtable); fix_expr_references(plan, (Node *) plan->targetlist); fix_expr_references(plan, (Node *) plan->qual); - mark_qual_expressions(plan->qual); fix_expr_references(plan, (Node *) ((Join *) plan)->joinqual); - mark_qual_expressions(((Join *) plan)->joinqual); fix_expr_references(plan, (Node *) ((HashJoin *) plan)->hashclauses); break; @@ -192,7 +180,6 @@ set_plan_references(Plan *plan, List *rtable) set_uppernode_references(plan, (Index) 0); fix_expr_references(plan, (Node *) plan->targetlist); fix_expr_references(plan, (Node *) plan->qual); - mark_qual_expressions(plan->qual); break; case T_Result: @@ -206,9 +193,7 @@ set_plan_references(Plan *plan, List *rtable) set_uppernode_references(plan, (Index) OUTER); fix_expr_references(plan, (Node *) plan->targetlist); fix_expr_references(plan, (Node *) plan->qual); - mark_qual_expressions(plan->qual); fix_expr_references(plan, ((Result *) plan)->resconstantqual); - mark_qual_expressions((List *) ((Result *) plan)->resconstantqual); break; case T_Append: @@ -284,28 +269,6 @@ fix_expr_references_walker(Node *node, void *context) } /* - * mark_qual_expressions - * Do final cleanup on qualifier expressions (not targetlists!) - * - * SubPlans appearing at the top level of a qual expression are marked - * to indicate that they need not distinguish UNKNOWN (null) from FALSE - * results; this can save processing time in some cases. - */ -static void -mark_qual_expressions(List *quals) -{ - List *qual; - - foreach(qual, quals) - { - Node *node = lfirst(qual); - - if (IsA(node, SubPlan)) - ((SubPlan *) node)->unknownEqFalse = true; - } -} - -/* * set_join_references * Modifies the target list of a join node to reference its subplans, * by setting the varnos to OUTER or INNER and setting attno values to the |