diff options
Diffstat (limited to 'src/backend/optimizer/plan/setrefs.c')
| -rw-r--r-- | src/backend/optimizer/plan/setrefs.c | 23 |
1 files changed, 3 insertions, 20 deletions
diff --git a/src/backend/optimizer/plan/setrefs.c b/src/backend/optimizer/plan/setrefs.c index 1b5c72e163c..1c9f8a27cff 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 1.88 2003/01/13 18:10:53 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/optimizer/plan/setrefs.c,v 1.89 2003/01/15 19:35:43 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -278,8 +278,7 @@ fix_expr_references_walker(Node *node, void *context) * Note: this same transformation has already been applied to the quals * of the join by createplan.c. It's a little odd to do it here for the * targetlist and there for the quals, but it's easier that way. (Look - * at switch_outer() and the handling of nestloop inner indexscans to - * see why.) + * at the handling of nestloop inner indexscans to see why.) * * Because the quals are reference-adjusted sooner, we cannot do equal() * comparisons between qual and tlist var nodes during the time between @@ -379,8 +378,7 @@ set_uppernode_references(Plan *plan, Index subvarno) * Creates a new set of targetlist entries or join qual clauses by * changing the varno/varattno values of variables in the clauses * to reference target list values from the outer and inner join - * relation target lists. Also, any join alias variables in the - * clauses are expanded into references to their component variables. + * relation target lists. * * This is used in two different scenarios: a normal join clause, where * all the Vars in the clause *must* be replaced by OUTER or INNER references; @@ -428,7 +426,6 @@ join_references_mutator(Node *node, { Var *var = (Var *) node; Resdom *resdom; - Node *newnode; /* First look for the var in the input tlists */ resdom = tlist_member((Node *) var, context->outer_tlist); @@ -454,20 +451,6 @@ join_references_mutator(Node *node, if (var->varno == context->acceptable_rel) return (Node *) copyObject(var); - /* - * Perhaps it's a join alias that can be resolved to input vars? - * We try this last since it's relatively slow. - */ - newnode = flatten_join_alias_vars((Node *) var, - context->rtable, - true); - if (!equal(newnode, (Node *) var)) - { - /* Must now resolve the input vars... */ - newnode = join_references_mutator(newnode, context); - return newnode; - } - /* No referent found for Var */ elog(ERROR, "join_references: variable not in subplan target lists"); } |