One of the most practical SQL interview questions on LeetCode—Customer Placing the Largest Number of Orders—is a great test of your understanding of aggregation and ranking.
In this video, you’ll learn how to identify the customer with the highest number of orders using powerful SQL concepts like GROUP BY, COUNT, and sorting (ORDER BY). We break everything down step by step so you not only solve the problem but also understand the logic behind it.
This pattern is widely used in real-world analytics—like finding top customers, analyzing user behavior, and driving business decisions based on data.
🔥 Master this question once, and you’ll unlock a whole category of SQL problems involving aggregation, ranking, and insights.
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