mysql> select user, max_questions, max_updates, max_connections, max_user_connections from mysql.user where user='user_name';
+-----------+---------------+-------------+-----------------+---------------------+
| User      | max_questions | max_updates | max_connections | max_user_connections|
+-----------+---------------+-------------+-----------------+---------------------+
| user_name | 0             | 0           | 0               | 0                   |
+-----------+---------------+-------------+-----------------+---------------------+
1 row in set (0.001 sec)