MySQL 批量给已有表加字段的SQL
ALTER TABLE `sys_people_require`
ADD COLUMN `people_number` INT(10) NULL DEFAULT NULL COMMENT '人数',
ADD COLUMN `plan_post_time` DATETIME NULL DEFAULT NULL COMMENT '计划到岗时间',
ADD COLUMN `responsibility` TEXT NULL DEFAULT NULL COMMENT '主要职责范围' COLLATE 'utf8mb4_general_ci';