# [196\. 刪除重復的電子郵箱](https://leetcode-cn.com/problems/delete-duplicate-emails/)
沒有作感覺它好難,相通了才知道如此簡單
```
DELETE
t1
FROM
Person as t1,
Person as t2
WHERE
t1.Email = t2.Email AND t1.Id > t2.Id
```
