[LeetCode] Delete Duplicate Emails 删除重复邮箱
Write a SQL query to delete all duplicate email entries in a table named Person, keeping only unique emails based on its smallest Id. ...
原文：[LeetCode] Duplicate Emails 重复的邮箱
Write a SQL query to find all duplicate emails in a table named Person. For example, your query should return the following for the above table: Note: All emails are in lowercase. 这道题让我们求重复的邮箱，那么最直接的 ...
2016-04-07 06:09 0 3006 推荐指数：
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