摘要: 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 people where peopleId in (select peopleId from people group by peopleId having count(peopleId) > 阅读全文
posted @ 2018-10-09 12:01 这是一个低调的昵称 阅读(14445) 评论(0) 推荐(1)