Update obsolete comment.

diff --git a/src/backend/executor/nodeUnique.c b/src/backend/executor/nodeUnique.c
index b38718b..0e34f00 100644 (file)
--- a/src/backend/executor/nodeUnique.c
+++ b/src/backend/executor/nodeUnique.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *       $PostgreSQL: pgsql/src/backend/executor/nodeUnique.c,v 1.41 2003/11/29 19:51:48 pgsql Exp $
+ *       $PostgreSQL: pgsql/src/backend/executor/nodeUnique.c,v 1.42 2004/03/02 22:05:24 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -104,9 +104,13 @@ ExecUnique(UniqueState *node)
         *
         * Note that we manage the copy ourselves.      We can't rely on the result
         * tuple slot to maintain the tuple reference because our caller may
-        * replace the slot contents with a different tuple (see junk filter
-        * handling in execMain.c).  We assume that the caller will no longer
-        * be interested in the current tuple after he next calls us.
+        * replace the slot contents with a different tuple.  We assume that
+        * the caller will no longer be interested in the current tuple after
+        * he next calls us.
+        *
+        * tgl 3/2004: the above concern is no longer valid; junkfilters used to
+        * modify their input's return slot but don't anymore, and I don't think
+        * anyplace else does either.  Not worth changing this code though.
         */
        if (node->priorTuple != NULL)
                heap_freetuple(node->priorTuple);