Extension:CheckUser/cusi case table

mysql> describe cusi_case;
+-----------------------+---------------------+------+-----+---------+----------------+
| Field                 | Type                | Null | Key | Default | Extra          |
+-----------------------+---------------------+------+-----+---------+----------------+
| sic_id                | int(10) unsigned    | NO   | PRI | NULL    | auto_increment |
| sic_status            | tinyint(3) unsigned | NO   | MUL | 0       |                |
| sic_status_reason     | varbinary(255)      | NO   |     |         |                |
| sic_created_timestamp | binary(14)          | NO   | MUL | NULL    |                |
+-----------------------+---------------------+------+-----+---------+----------------+