mysql> desc users;
+-------------+------------------+------+-----+---------------------+----------------+
| Field       | Type             | Null | Key | Default             | Extra          |
+-------------+------------------+------+-----+---------------------+----------------+
| user_id     | int(10) unsigned | NO   | PRI | NULL                | auto_increment | 
| username    | varchar(128)     | NO   |     | NULL                |                | 
| mail_host   | varchar(128)     | NO   |     | NULL                |                | 
| alias       | varchar(128)     | NO   |     | NULL                |                | 
| created     | datetime         | NO   |     | 0000-00-00 00:00:00 |                | 
| last_login  | datetime         | NO   |     | 0000-00-00 00:00:00 |                | 
| language    | varchar(5)       | NO   |     | en                  |                | 
| preferences | text             | YES  |     | NULL                |                | 
+-------------+------------------+------+-----+---------------------+----------------+
8 rows in set (0.00 sec)