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Fix errors in SELECT ... GROUP BY ... UNION SELECT ...

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ye proverbial one-line patch (not counting five lines of comment so's
maybe it won't happen again)
This commit is contained in:
Tom Lane 1999-06-10 06:55:40 +00:00
parent 878d952084
commit c37ecaf8d5
1 changed files with 8 additions and 1 deletions
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9
src/backend/optimizer/prep/prepunion.c
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@ -7,7 +7,7 @@
* *
* *
* IDENTIFICATION * 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 */ /* needed so we don't take the flag from the first query */
parse->uniqueFlag = NULL; 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->havingQual = NULL;
parse->hasAggs = false; parse->hasAggs = false;