Master Self Joins Analytics|LeetCode 3521 Product Recommendation Pairs|Amazon SQL Interview Question

Ever wondered how Amazon builds its "Customers who bought this also bought..." feature? In this video, we crack LeetCode 3521: Find Product Recommendation Pairs, a classic Medium-level SQL problem often asked in Amazon and e-commerce Data Analyst/Engineering interviews.

We will write a query to identify distinct product pairs frequently purchased together by the same customers using Self Joins, Grouping, and Filtering.

🚀 What you will learn in this video:

How to use SQL Self Joins to pair data within the same table.

Analyzing Co-Purchase patterns (Market Basket Analysis basics).

Optimizing queries with GROUP BY and HAVING clauses.

Handling sorting and tie-breaking in SQL results.

📝 Problem Overview: We need to find pairs of products that were purchased by at least 3 distinct users. The result must be ordered by popularity (customer count).
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Видео Master Self Joins Analytics|LeetCode 3521 Product Recommendation Pairs|Amazon SQL Interview Question канала Vivek The Analyst