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博客园 - Love Fendi

性能优化系列---查询高cup的sql State模式学习 8.17--8.24积累 sql server 2005 analysis service step by step(三):创建父子维度 sql server 2005 analysis service step by step(二):创建时间维度 sql serve 2005 analysis service step by step(一):创建标准维度 算法练习五:求数组中第k大的数 算法练习四:求N!不溢出 算法练习三:奇偶分割 算法练习二:二分查找 数据库锁 算法练习一:最大公约数与最小公倍数 索引优化 生成验证码,同时异步获取加密后的验证码 自定义控件中与脚本资源集成的若干处理方式 动态按需异步加载js文件 在Nhibernate中使用Json.net中出现Self referencing loop的错误的处理 JQuery学习笔记 c#委托事件 入门
一条语句删除表中某字段重复的数据
Love Fendi · 2009-01-19 · via 博客园 - Love Fendi

一条语句删除表中某字段重复的数据

DELETE FROM dbo.article WHERE ID NOT IN (SELECT minid FROM (SELECT title,MIN(ID) AS minid FROM dbo.article GROUP BY title) a)

posted on 2009-01-19 15:10  Love Fendi  阅读(245)  评论(0)    收藏  举报