ADVANCED SQL 🔥 Consecutive Numbers Problem | 3 Approaches Explained

In this video, you’ll learn how to solve a famous SQL interview problem: 👉 Find numbers that appear at least 3 times consecutively This is a highly asked SQL interview question that tests your understanding of: ✔ Window Functions ✔ LEAD / LAG ✔ ROW_NUMBER ✔ Self Joins ✔ Sequence Pattern Detection We solve this problem using 3 different approaches. SQL Table creation Script -- Insert sample data INSERT INTO Logs (id, num) VALUES (1, 1), (2, 1), (3, 1), (4, 2), (5, 1), (6, 2), (7, 2); INSERT INTO Logs (id, num) VALUES (1, 2), (2, 2), (3, 3), (4, 2), (5, 1), (6, 1), (7, 1), (8, 2), (9, 1), (10, 1), (11,1); Topics covered: ✅ Problem understanding ✅ Detecting consecutive values ✅ Approach 1: LEAD() Window Function ✅ Approach 2: ROW_NUMBER() Grouping Trick ✅ Approach 3: Self Join Method ✅ Step-by-step SQL explanation ✅ Interview tricks and edge cases By the end of this video: • You’ll master sequence detection problems in SQL • You’ll understand multiple ways to solve the same problem • Your SQL interview preparation will improve significantly 🎯 Perfect for: SQL beginners Data Analysts Data Engineers Interview Preparation 👉 Practice all 3 approaches yourself 👉 Compare the solutions 👉 Share with your SQL learning group Visit www.bigdatayatra.com All views are my own.