摘要: 查询及删除重复记录的方法(一)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 阅读全文
posted @ 2016-09-05 09:19 锐洋智能 阅读(678) 评论(0) 推荐(0) 编辑