Bug#7241 - Invalid response when DELETE .. USING and LOCK TABLES used.

  Only acquire necessary write lock for multi-delete

1 files changed, 14 insertions, 0 deletions

diff --git a/mysql-test/t/lock.test b/mysql-test/t/lock.test
index 26fc4e32bda..261c01b405c 100644
--- a/mysql-test/t/lock.test
+++ b/mysql-test/t/lock.test
@@ -59,3 +59,17 @@ unlock tables;
 lock tables t1 write, t1 as t1_alias read;
 insert into t1 select index1,nr from t1 as t1_alias;
 drop table t1,t2;
+
+#
+# Bug7241 - Invalid response when DELETE .. USING and LOCK TABLES used.
+#
+create table t1 ( a int(11) not null auto_increment, primary key(a));
+create table t2 ( a int(11) not null auto_increment, primary key(a));
+lock tables t1 write, t2 read;
+delete from t1 using t1,t2 where t1.a=t2.a;
+delete t1 from t1,t2 where t1.a=t2.a;
+--error 1099
+delete from t2 using t1,t2 where t1.a=t2.a;
+--error 1099
+delete t2 from t1,t2 where t1.a=t2.a;
+drop table t1,t2;