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-rw-r--r--mysql-test/r/select_jcl6.result20
1 files changed, 20 insertions, 0 deletions
diff --git a/mysql-test/r/select_jcl6.result b/mysql-test/r/select_jcl6.result
index b5c6f89b87b..467f940c85d 100644
--- a/mysql-test/r/select_jcl6.result
+++ b/mysql-test/r/select_jcl6.result
@@ -5313,6 +5313,26 @@ INSERT INTO t2 VALUES (3),(4);
SELECT * FROM t1, t2 WHERE a=3 AND a=b;
a b
drop table t1,t2;
+#
+# Bug mdev-4250: wrong transformation of WHERE condition with OR
+#
+CREATE TABLE t1 (pk int PRIMARY KEY, a int);
+INSERT INTO t1 VALUES (3,0), (2,0), (4,1), (5,0), (1,0);
+SELECT * FROM t1 WHERE (1=2 OR t1.pk=2) AND t1.a <> 0;
+pk a
+EXPLAIN EXTENDED
+SELECT * FROM t1 WHERE (1=2 OR t1.pk=2) AND t1.a <> 0;
+id select_type table type possible_keys key key_len ref rows filtered Extra
+1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
+Warnings:
+Note 1003 select 2 AS `pk`,0 AS `a` from `test`.`t1` where ((0 <> 0))
+DROP TABLE t1;
+SELECT * FROM mysql.time_zone
+WHERE ( NOT (Use_leap_seconds <= Use_leap_seconds AND Time_zone_id != 1)
+AND Time_zone_id = Time_zone_id
+OR Time_zone_id <> Time_zone_id )
+AND Use_leap_seconds <> 'N';
+Time_zone_id Use_leap_seconds
End of 5.3 tests
set join_cache_level=default;
show variables like 'join_cache_level';