182. Duplicate Emails

Duplicate Emails

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

+----+---------+ | Id | Email | +----+---------+ | 1 | [e-mail] | | 2 | [e-mail] | | 3 | [e-mail] | +----+---------+

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

+---------+ | Email | +---------+ | [e-mail] | +---------+

Note: All emails are in lowercase.

Solution

# Write your MySQL query statement below
select distinct p1.Email
from Person p1, Person p2
where p1.Id <> p2.Id and p1.Email = p2.Email