ALTER TABLE `sys_user` ADD `otp_type` SET('none', 'email') NOT NULL DEFAULT 'none' AFTER `otp_enabled`, ADD `otp_data` VARCHAR(255) NULL AFTER `otp_type`, ADD `otp_recovery` VARCHAR(64) NULL AFTER `otp_data`, ADD `otp_attempts` TINYINT NOT NULL DEFAULT '0' AFTER `otp_recovery`;
