Fix mistaken Assert in adjust_appendrel_attr_needed, per Greg Stark.

diff --git a/src/backend/optimizer/prep/prepunion.c b/src/backend/optimizer/prep/prepunion.c
index 5a6c7913001d5bf6fd034e8abeb0509ba65db422..e805740fe4c60fb9af6e249934865f82a405719a 100644 (file)
--- a/src/backend/optimizer/prep/prepunion.c
+++ b/src/backend/optimizer/prep/prepunion.c
@@ -1283,8 +1283,6 @@ adjust_appendrel_attr_needed(RelOptInfo *oldrel, AppendRelInfo *appinfo,
        ListCell   *lm;
 
        /* Create empty result array */
-       Assert(new_min_attr <= oldrel->min_attr);
-       Assert(new_max_attr >= oldrel->max_attr);
        new_attr_needed = (Relids *)
                palloc0((new_max_attr - new_min_attr + 1) * sizeof(Relids));
        /* Process user attributes, with appropriate attno mapping */
@@ -1307,6 +1305,7 @@ adjust_appendrel_attr_needed(RelOptInfo *oldrel, AppendRelInfo *appinfo,
                parent_attr++;
        }
        /* Process system attributes, including whole-row references */
+       Assert(new_min_attr <= oldrel->min_attr);
        for (parent_attr = oldrel->min_attr; parent_attr <= 0; parent_attr++)
        {
                Relids          attrneeded;