MariaDB [test]> set global query_cache_size = 1024*1024;

Query OK, 0 rows affected (0.00 sec)

MariaDB [test]> select * from information_schema.query_cache_info;

Empty set (0.00 sec)

MariaDB [test]> set global query_cache_size = 0;

Query OK, 0 rows affected (0.00 sec)

MariaDB [test]> select * from information_schema.query_cache_info;

ERROR 1105 (HY000): Unknown error

revision-id: monty@askmonty.org-20130512082916-vjlzg3tjtlbvnowy

revno: 3759

branch-nick: 5.5