Extension:CentralAuth/localuser table

mysql> describe localuser; +---+-+--+-+-+---+ +---+-+--+-+-+---+ +---+-+--+-+-+---+
 * Field                | Type                                                            | Null | Key | Default | Extra |
 * lu_wiki              | varbinary(255)                                                  | NO   | PRI | NULL    |       |
 * lu_name              | varbinary(255)                                                  | NO   | PRI | NULL    |       |
 * lu_attached_timestamp | varbinary(14)                                                  | YES  |     | NULL    |       |
 * lu_attached_method   | enum('primary','empty','mail','password','admin','new','login') | YES  |     | NULL    |       |
 * lu_local_id          | int(10) unsigned                                                | YES  |     | NULL    |       |
 * lu_global_id         | int(10) unsigned                                                | YES  |     | NULL    |       |