Extension:Translate/translate groupstats table

mysql> describe translate_groupstats;
+----------------+-----------------+------+-----+---------+-------+
| Field          | Type            | Null | Key | Default | Extra |
+----------------+-----------------+------+-----+---------+-------+
| tgs_group      | varbinary(100)  | NO   | PRI | NULL    |       |
| tgs_lang       | varbinary(20)   | NO   | PRI | NULL    |       |
| tgs_total      | int(5) unsigned | YES  |     | NULL    |       |
| tgs_translated | int(5) unsigned | YES  |     | NULL    |       |
| tgs_fuzzy      | int(5) unsigned | YES  |     | NULL    |       |
| tgs_proofread  | int(5) unsigned | YES  |     | NULL    |       |
+----------------+-----------------+------+-----+---------+-------+