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In this post, you will find the solution for the Duplicate Emails in C++, Java & Python-LeetCode problem. We are providing the correct and tested solutions to coding problems present on LeetCode. If you are not able to solve any problem, then you can take help from our Blog/website.
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Link for the Problem – Duplicate Emails– LeetCode Problem
Duplicate Emails– LeetCode Problem
+-------------+---------+ | Column Name | Type | +-------------+---------+ | id | int | | email | varchar | +-------------+---------+ id is the primary key column for this table. Each row of this table contains an email. The emails will not contain uppercase letters.
Write an SQL query to report all the duplicate emails.
Return the result table in any order.
The query result format is in the following example.
Input: Person table: +----+---------+ | id | email | +----+---------+ | 1 | firstname.lastname@example.org | | 2 | email@example.com | | 3 | firstname.lastname@example.org | +----+---------+ Output: +---------+ | Email | +---------+ | email@example.com | +---------+ Explanation: firstname.lastname@example.org is repeated two times.
Duplicate Emails– LeetCode Solutions
Duplicate Emails Solution in SQL:
# 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