Extension:CentralAuth/global group restrictions table

mysql> describe global_group_restrictions;
+-----------+----------------+------+-----+---------+-------+
| Field     | Type           | Null | Key | Default | Extra |
+-----------+----------------+------+-----+---------+-------+
| ggr_group | varbinary(255) | NO   | PRI | NULL    |       |
| ggr_set   | int(11)        | NO   | MUL | NULL    |       |
+-----------+----------------+------+-----+---------+-------+