mysql> describe thread_history;
+-------------------+------------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-------------------+------------------+------+-----+---------+----------------+
| th_id | int(10) unsigned | NO | PRI | NULL | auto_increment |
| th_thread | int(10) unsigned | NO | MUL | NULL | |
| th_timestamp | varbinary(14) | NO | MUL | NULL | |
| th_user | int(10) unsigned | NO | MUL | NULL | |
| th_user_text | varbinary(255) | NO | | NULL | |
| th_change_type | int(10) unsigned | NO | | NULL | |
| th_change_object | int(10) unsigned | NO | | NULL | |
| th_change_comment | tinyblob | NO | | NULL | |
| th_content | longblob | NO | | NULL | |
+-------------------+------------------+------+-----+---------+----------------+
