2018年3月8日
mysql 删除相同的数据
摘要： DELETE from sign_exchange WHERE id in(SELECT * from (SELECT id from sign_exchange WHERE type=3 and activity_id=39 GROUP BY `uid` HAVING COUNT( * ) >1) 阅读全文
posted @ 2018-03-08 13:38 zzl2017w 阅读(196) 评论(1) 推荐(0)