LeetCode 584: Find Customer Referee | SQL Solution Explained

In this video, we solve LeetCode Problem 584: Find Customer Referee using SQL. Learn how to query customer data to find those who were referred by another customer. Specifically, filter customers where the referee ID is not NULL or 2.
📚 What You'll Learn:
How to use the WHERE clause to filter data.
Handling NULL values in SQL queries.
Practical application of SQL filtering techniques for relational datasets.
🔑 Key SQL Concepts Covered:
Using conditional filtering with the WHERE clause.
Excluding specific values and handling NULL.
Querying for specific subsets of data in SQL.
🎯 Perfect for SQL learners and database enthusiasts preparing for coding interviews or working on real-world data problems.
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