摘要: alter table tb_course add selected int(3) not null default 0 check ( selected between 0 and total_people ) comment '课程已选人数'; 报错:Column check constrain 阅读全文
posted @ 2020-12-26 13:20 xing柠檬 阅读(3615) 评论(0) 推荐(0) 编辑