摘要: 用SQL语句,删除掉重复项只保留一条在几千条记录里,存在着些相同的记录,如何能用SQL语句,删除掉重复的呢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... 阅读全文
posted @ 2015-02-13 13:57 上海-天浩 阅读(418) 评论(0) 推荐(0) 编辑

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