diff options
| -rw-r--r-- | src/backend/optimizer/prep/prepunion.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/backend/optimizer/prep/prepunion.c b/src/backend/optimizer/prep/prepunion.c index 478186b631b..9ae2fb57a89 100644 --- a/src/backend/optimizer/prep/prepunion.c +++ b/src/backend/optimizer/prep/prepunion.c @@ -7,7 +7,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/optimizer/prep/prepunion.c,v 1.32 1999/06/06 17:38:11 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/optimizer/prep/prepunion.c,v 1.33 1999/06/10 06:55:40 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -192,6 +192,13 @@ plan_union_queries(Query *parse) /* needed so we don't take the flag from the first query */ parse->uniqueFlag = NULL; + /* Make sure we don't try to apply the first query's grouping stuff + * to the Append node, either. Basically we don't want union_planner + * to do anything when we return control, except add the top sort/unique + * nodes for DISTINCT processing if this wasn't UNION ALL, or the top + * sort node if it was UNION ALL with a user-provided sort clause. + */ + parse->groupClause = NULL; parse->havingQual = NULL; parse->hasAggs = false; |