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    |       |