Manual:External user table/zh

external_user表追踪外部用户账户，如果使用了的话.

该表在 54900中，连同外部验证功能被移除. 应该改用.

eu_local_id
Foreign key to

eu_external_id
Some opaque identifier provided by the external database

架构摘要
++--+--+-+-+---+ ++--+--+-+-+---+ ++--+--+-+-+---+
 * Field         | Type             | Null | Key | Default | Extra |
 * eu_local_id   | int(10) unsigned | NO   | PRI | NULL    |       |
 * eu_external_id | varbinary(255)  | NO   | UNI | NULL    |       |