mysql 同时给表增加多个字段
ALTER TABLE bcm_prom_store
ADD COLUMN `prom_status` varchar(18) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci DEFAULT NULL COMMENT '促销执行状态' AFTER store_code,
ADD COLUMN `stop_time` datetime DEFAULT NULL COMMENT '终止时间' AFTER prom_status;