In this video on "LeetCode 1321 – Restaurant Growth Solution | SQL | LeetCode Interview Question", we’ll walk you through a step-by-step SQL solution for the LeetCode problem “Restaurant Growth”. This question is perfect for anyone preparing for SQL coding interviews or aiming to improve their data analytics and query optimisation skills.

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This video covers:

00:00 Introduction
00:11 Problem overview
02:47 Conclusion

Problem Explanation – Restaurant Growth (LeetCode 1321)
Understand the goal of the problem — calculating a 7-day rolling average of customer spending for each customer.

Step-by-Step SQL Solution
Learn how to use window functions, joins, and aggregate queries to derive the correct output efficiently.

SQL Concepts Covered
Explore essential SQL topics such as AVG() OVER(), date-based calculations, filtering with WHERE, and grouping by customer IDs.

Optimised Approach
See how to write a clean, high-performance SQL query that follows best practices for coding interviews.

By the end of this tutorial, you’ll know exactly how to solve LeetCode 1321 – Restaurant Growth using SQL and be ready to tackle similar data analytics interview questions.

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