180608_find_duplicate

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 DISTINCT p1.Email
FROM Person p1, Person p2
WHERE p1.Email = p2.Email 
    AND p1.Id > p2.Id