LeetCode - 1321. Restaurant Growth (SQL) скачать в хорошем качестве

LeetCode - 1321. Restaurant Growth (SQL)

Welcome to the detailed solution and walkthrough for the SQL challenge 'Restaurant Growth' from LeetCode. Concepts Covered: -- Common Table Expressions (CTEs): Learn about CTEs and how they can organize complex queries, improve readability, and enable referencing the result set multiple times in the same query. -- Window Functions: Dive into the powerful SQL feature of window functions for performing calculations across a set of table rows that are somehow related to the current row. -- Cumulative Sum: Understand the technique to compute a cumulative sum (running total) using the SUM() function with a window frame specified by ROWS BETWEEN. -- Moving Average: Discover how to calculate a moving average, which is a common statistical operation, by using the AVG() function within a window frame. -- LAG Function: Gain insights into the LAG() function to access data from a previous row in the same result set without a self-join, useful for comparing current values with past values. Whether you're prepping for interviews or refining your SQL skills, this solution will provide you with practical insights and a clearer understanding of some pivotal SQL techniques. #sql #leetcode #coding #sqlforbeginners #developer #faang #interview Don't forget to like, share, and subscribe for more such walkthroughs. Drop any questions or comments below!