ALTER TABLE `smart_assess`.`sys_user`
MODIFY COLUMN `certificate_no` varchar(100) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL COMMENT '证书编号';
ALTER TABLE `smart_assess`.`sys_user`
MODIFY COLUMN `level` varchar(10) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL COMMENT '评价师等级';