Leetcode Problem 182. Duplicate Emails

182. Duplicate Emails

Leetcode Solutions

Using GROUP BY and HAVING to Identify Duplicate Emails

Use the SELECT statement to specify the email column to be returned.
Use the FROM clause to specify the Person table as the source of the data.
Apply the GROUP BY clause to aggregate the results by the email column.
Use the HAVING clause to filter the groups by the count of emails, keeping only those where the count is greater than 1.
The resulting query will return the list of duplicate emails.

erDiagram
    Person {
        int id PK
        varchar email
    }

Using a Subquery to Identify Duplicate Emails

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