Complete PostgreSQL Course for Beginners - Why 90% Get GROUP BY Totally Wrong

Still stuck using only GROUP BY in SQL? That used to be me… until I discovered window functions—and everything changed. In this video, I’ll show you the #1 mistake most SQL learners (and even pros!) make: confusing GROUP BY with window functions. I'll explain each step with simple, relatable examples and when to use each so you can write more powerful, flexible queries. ✅ Learn the difference in just a few minutes ✅ Avoid common interview mistakes ✅ Upgrade your SQL mindset If you’re serious about mastering window functions correctly, my book ‘SQL Window Functions’ is now on special discount. In this video, we'll dive into the world of SQL and explore the key differences between GROUP BY and Window Functions. Both are used to perform aggregations and analyze data, but they serve distinct purposes and have different use cases. We'll examine the syntax, examples, and scenarios where one is more suitable than the other. By the end of this video, you'll have a clear understanding of when to use GROUP BY and when to use Window Functions, making you a more efficient and effective SQL developer. Whether you're a beginner or an experienced developer, this video will help you take your SQL skills to the next level. 🎯 Level up with my book 'Mastering SQL Windows Functions'—get your copy today! 📘💡https://dataprofy.com/product/mastering-sql-windows-functions/ ============ Watch how to configure Oracle on VS Code https://youtu.be/6mwAx4sGhwk Explore the complete PL/SQL course for FREE on my website at https://www.rebellionrider.com/category/pl-sql/ ============ The camera gear I use in my Videos https://www.amazon.in/shop/manishsharma?listId=DU9UM0XL97KM&ref=idea_share_inf ============ Connect With Me on My Social Media https://www.instagram.com/RebellionRider/ https://www.facebook.com/TheRebellionRider/ https://twitter.com/RebellionRider https://www.linkedin.com/in/mannbhardwaj/ ============ FAQ Which book to refer to learn - PL/SQL https://amzn.to/2QE1jX0 Performance Tuning https://amzn.to/2sgiAw4 1z0-071 Exam https://amzn.to/2sgfeJw Python Programming https://amzn.to/305UEbh ============ AFFILIATE DISCLOSURE: Some of the links used in the description will direct you to Amazon.in. As an Amazon Associate, I earn from qualifying purchases at no additional cost to you. #rebellionrider =============