SQL 50: LeetCode 1141 - User Activity for the Past 30 Days I (Interview Prep Essential!) скачать в хорошем качестве

SQL 50: LeetCode 1141 - User Activity for the Past 30 Days I (Interview Prep Essential!)

Unlock the secrets to daily user activity tracking in SQL with this comprehensive Leetcode SQL 50 challenge walkthrough! (0:03-0:12) Join us as we tackle "1141. User Activity for the Past 30 Days I," breaking down a complex problem into manageable steps. This video is perfect for SQL learners, data analysts, and anyone looking to sharpen their SQL skills. What you'll learn: Understanding the problem statement: We start by dissecting the requirements to ensure a clear path to the solution. (0:17-0:40) Filtering data by date: Learn how to effectively use DATE_SUB to filter activities within a specific 30-day period, inclusive of the end date. (3:45-8:05) Handling inclusive date ranges: Discover the nuances of including both start and end dates in your SQL queries for accurate results. (7:26-8:27) Counting distinct users: The video highlights a crucial mistake in counting session ID instead of user ID for active users, a common pitfall that's essential to understand for precise analytics. (38:32-39:50) Debugging SQL queries: Witness a real-time debugging session that showcases common challenges and how to overcome them, emphasizing that "failing is a part of the process." (30:12-30:46) Structuring queries with CTEs: See how to use WITH clauses (CTEs) to make your SQL code more readable, maintainable, and easier to debug. (12:41-14:22) Whether you're preparing for a SQL interview, working on a data project, or simply want to improve your database query skills, this video provides practical insights and a step-by-step guide to solving a real-world SQL problem. Resources : https://leetcode.com/problems/user-ac... SQL 50 :    • Leetcode SQL 50   Support me on UPI : prashantdabe02-1@oksbi Happy coding mate!! Don't forget to like, comment, and subscribe for more SQL tutorials and data analysis content! #LeetcodeSQL #SQLPractice #DataAnalysis #PostgreSQL #Programming #SQLTutorial #Database #Coding #UserActivity #SQLTips