摘要: SQL重复记录查询 1、查找表中多余的重复记录,重复记录是根据单个字段(peopleId)来判断select * from peoplewhere peopleId in (select peopleId from people group by peopleId having count (peo 阅读全文
posted @ 2019-03-05 11:37 TwinStudio 阅读(3953) 评论(0) 推荐(0) 编辑