SQL Interview Question 🚀 Find Gaps in Sequence

In this video, you’ll learn how to solve an advanced SQL interview problem: 👉 Find Missing ID Ranges / Gaps in Sequence This is a very popular SQL interview question that tests your understanding of: ✔ Window Functions ✔ Self Joins ✔ Sequence Analysis ✔ Gap Detection Logic We solve this problem using 2 powerful approaches: Topics covered: ✅ Problem understanding ✅ What are gaps in sequence? ✅ Approach 1: LEAD() Window Function ✅ Approach 2: Self Join Method ✅ Step-by-step SQL explanation ✅ Real interview tips and edge cases By the end of this video: • You’ll know how to detect missing ranges in SQL • You’ll understand sequence-based SQL problems • Your SQL interview preparation will improve significantly 🎯 Perfect for: SQL beginners Data Analysts Data Engineers Interview Preparation 👉 Practice the query yourself 👉 Compare both approaches 👉 Share with your SQL learning group Visit www.bigdatayatra.com All views are my own. -- Create Logs table CREATE TABLE Logs ( id INT PRIMARY KEY ); -- Insert sample data INSERT INTO Logs (id) VALUES (1), (2), (4), (7), (8), (10);