From 138e5d57eb1d37f438294da9442e191812946381 Mon Sep 17 00:00:00 2001
From: "Sinisa@sinisa.nasamreza.org" <>
Date: Sat, 15 Jun 2002 20:59:42 +0300
Subject: Fixed a bug in optimiser with MERGE tables with non-unique values
 with aggregating functions.

This consistently crashed Mysql
---
 mysql-test/r/merge.result | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'mysql-test/r/merge.result')

diff --git a/mysql-test/r/merge.result b/mysql-test/r/merge.result
index 9b72ff26350..1e657883253 100644
--- a/mysql-test/r/merge.result
+++ b/mysql-test/r/merge.result
@@ -462,3 +462,12 @@ a	b
 6	1
 6	2
 drop table if exists t6, t5, t4, t3, t2, t1;
+CREATE TABLE t1 (  a int(11) NOT NULL default '0',  b int(11) NOT NULL default '0',  PRIMARY KEY  (a,b)) TYPE=MyISAM;
+INSERT INTO t1 VALUES (1,1), (2,1);
+CREATE TABLE t2 (  a int(11) NOT NULL default '0',  b int(11) NOT NULL default '0',  PRIMARY KEY  (a,b)) TYPE=MyISAM;
+INSERT INTO t2 VALUES (1,2), (2,2);
+CREATE TABLE t (  a int(11) NOT NULL default '0',  b int(11) NOT NULL default '0',  KEY a (a,b)) TYPE=MRG_MyISAM UNION=(t1,t2);
+select max(b) from t where a = 2;
+max(b)
+NULL
+drop table if exists t,t1,t2;
-- 
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