RewritePreprocessQuery tried to match resjunk targets against

result relation ... wrong ...

diff --git a/src/backend/rewrite/rewriteHandler.c b/src/backend/rewrite/rewriteHandler.c
index e14452a..b4cfe96 100644 (file)
--- a/src/backend/rewrite/rewriteHandler.c
+++ b/src/backend/rewrite/rewriteHandler.c
@@ -6,7 +6,7 @@
  *
  *
  * IDENTIFICATION
- *       $Header: /cvsroot/pgsql/src/backend/rewrite/rewriteHandler.c,v 1.47 1999/06/21 01:26:56 tgl Exp $
+ *       $Header: /cvsroot/pgsql/src/backend/rewrite/rewriteHandler.c,v 1.48 1999/07/11 17:54:30 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -2610,6 +2610,8 @@ RewritePreprocessQuery(Query *parsetree)
         * target relation. FixNew() depends on it when replacing
         * *new* references in a rule action by the expressions
         * from the rewritten query.
+        * resjunk targets are somewhat arbitrarily given a resno of 0;
+        * this is to prevent FixNew() from matching them to var nodes.
         * ----------
         */
        if (parsetree->resultRelation > 0)
@@ -2617,8 +2619,6 @@ RewritePreprocessQuery(Query *parsetree)
                RangeTblEntry *rte;
                Relation        rd;
                List       *tl;
-               TargetEntry *tle;
-               int                     resdomno;
 
                rte = (RangeTblEntry *) nth(parsetree->resultRelation - 1,
                                                                        parsetree->rtable);
@@ -2626,9 +2626,12 @@ RewritePreprocessQuery(Query *parsetree)
 
                foreach(tl, parsetree->targetList)
                {
-                       tle = (TargetEntry *) lfirst(tl);
-                       resdomno = attnameAttNum(rd, tle->resdom->resname);
-                       tle->resdom->resno = resdomno;
+                       TargetEntry *tle = (TargetEntry *) lfirst(tl);
+
+                       if (! tle->resdom->resjunk)
+                               tle->resdom->resno = attnameAttNum(rd, tle->resdom->resname);
+                       else
+                               tle->resdom->resno = 0;
                }
 
                heap_close(rd);