sellvana

-- Abstract: if there's ''@'localhost' user, can login with any username without password, 
-- and any users @'%' will be ignored on login.

-------[Root connection]-------

-- All mysql installations I've seen so far have ''@'localhost' user record.
mysql> select host, user from mysql.user;
+-----------+--------+
| host      | user   |
+-----------+--------+