ALTER TABLE `user_cp_apply`
  ADD COLUMN `relation_type` varchar(32) NOT NULL DEFAULT 'CP' COMMENT '关系类型：CP/BROTHER/SISTERS' AFTER `accept_apply_user_id`;

ALTER TABLE `user_cp_relationship`
  ADD COLUMN `relation_type` varchar(32) NOT NULL DEFAULT 'CP' COMMENT '关系类型：CP/BROTHER/SISTERS' AFTER `cp_user_id`;

UPDATE `user_cp_apply`
SET `relation_type` = 'CP'
WHERE `relation_type` IS NULL OR `relation_type` = '';

UPDATE `user_cp_relationship`
SET `relation_type` = 'CP'
WHERE `relation_type` IS NULL OR `relation_type` = '';
