LeeCode(Database)-Duplicate Emails

时间:2021-05-29 06:53:40

Write a SQL query to find all duplicate emails in a table named Person.

+----+---------+
| Id | Email |
+----+---------+
| 1 | a@b.com |
| 2 | c@d.com |
| 3 | a@b.com |
+----+---------+

For example, your query should return the following for the above table:

+---------+
| Email |
+---------+
| a@b.com |
+---------+
 # Write your MySQL query statement below
select Email from Person group by Email having COUNT(Email)>1