[LeetCode][SQL]Duplicate Emails
浏览数：26 /
时间：2015年06月12日
https://leetcode.com/problems/duplicate-emails/
Duplicate Emails
Write a SQL query to find all duplicate emails in a table named Person.
+----+---------+ | Id | Email | +----+---------+ | 1 | [email protected] | | 2 | [email protected] | | 3 | [email protected] | +----+---------+
For example, your query should return the following for the above table:
+---------+ | Email | +---------+ | [email protected] | +---------+
select Email from Person group by Email having count(*) > 1
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