182. Duplicate Emails

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 distinct a.Email
from Person a
join Person b
where a.Id <> b.Id AND a.Email = b.Email;

 

posted @ 2019-11-19 03:05  Schwifty  阅读(95)  评论(0编辑  收藏  举报