ALTER TABLE `user`
ADD COLUMN `loginstate`  bit NULL COMMENT 'µÇ½״̬' AFTER `platform`,
ADD COLUMN `registrationID`  varchar(100) NULL COMMENT 'app×¢²áID' AFTER `loginstate`;

ALTER TABLE `user`
ADD COLUMN `appTaken`  varchar(100) NULL COMMENT 'appµÄTokenÖµ' AFTER `registrationID`;