Duplicate Emails

• LeetCode: Duplicate Emails

• Problem:

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

• Note:

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

• Examples:

+----+---------+
| 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 |
+---------+

• Analysis:

SELECT: email
FROM: Person
GROUP BY: email
HAVING: count(email) > 1

• SQL:

# Write your MySQL query statement below
SELECT Email FROM Person GROUP BY Email HAVING (count(*) > 1)