LeetCode - 182 - Duplicate Emails

, ,

Problem

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] |
+---------+

Note: All emails are in lowercase.
Try it out : http://leetcode.com/problems/duplicate-emails/

Mysql 100ms

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# Write your MySQL query statement below
select LCASE(Email) as Email from Person group by Email having count(*) > 1;