🔥 LeetCode SQL – Duplicate Emails | Easy Explained (Step-by-Step)

One of the most commonly asked SQL interview questions on LeetCode—Duplicate Emails—is a must-know for anyone preparing for data analyst or backend roles.

In this video, you’ll learn how to efficiently find duplicate records using powerful SQL concepts like GROUP BY, HAVING, and aggregation. We break the solution down step by step so you don’t just memorize the query—you actually understand the logic behind it.

This pattern is widely used in real-world scenarios like data cleaning, fraud detection, and maintaining database integrity.

🔥 Master this problem once, and you’ll unlock a whole category of SQL questions related to duplicates and data validation.

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Видео 🔥 LeetCode SQL – Duplicate Emails | Easy Explained (Step-by-Step) канала Data science with Harivansh