Last updated on January 6th, 2025 at 10:29 pm

This Leetcode problem Duplicate Emails LeetCode Solution is done in SQL.

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Duplicate Emails LeetCode Solution

Problem Statement

id is the primary key (column with unique values) for this table. Each row of this table contains an email. The emails will not contain uppercase letters.

Write a solution to report all the duplicate emails. Note that it’s guaranteed that the email field is not NULL.

Return the result table in any order.

The result format is in the following example.

Example 1:
Input:

Output:

Explanation: a@b.com is repeated two times.

1. Duplicate Emails LeetCode Solution MySQL

select 
  Email 
from 
  Person 
group by 
  Email 
having 
  count(Email) > 1;