2016年10月13日

删除重复数据

摘要： delete from student where id not in (select minid from (select min(id) as minid from student group by name) b); $sql = 'delete from tbTeachingV3Studen 阅读全文

posted @ 2016-10-13 14:07 会学习的猪 阅读(129) 评论(0) 推荐(0) 编辑

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