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# [196\. 删除重复的电子邮箱](https://leetcode-cn.com/problems/delete-duplicate-emails/) ![](https://box.kancloud.cn/13203d61115ba61ab69bf4b7c5a48673_638x420.png) 没有作感觉它好难,相通了才知道如此简单 ``` DELETE t1 FROM Person as t1, Person as t2 WHERE t1.Email = t2.Email AND t1.Id > t2.Id ```