Watch Mastering SQL - PostgreSQL: Advanced SQL - Analytic Functions – Windowing Video Tutorial

In this advanced PostgreSQL tutorial, learn how to use windowing functions to retrieve data from prior or following records using LEAD and LAG functions. We also explore FIRST VALUE and LAST VALUE for extracting metrics like the first and last entries in a partition. Key Concepts: ✔️ LEAD and LAG functions for prior and following records ✔️ How to use FIRST VALUE and LAST VALUE for complex aggregations ✔️ Practical examples using PostgreSQL windowing functions ✔️ Efficiently partitioning and ordering data with window functions ✔️ SQL window functions for solving business problems like tracking top-performing products Timestamps * 0:00 - Introduction to Windowing Functions * 1:00 - Retrieving prior and following records using LEAD and LAG * 2:29 - Replacing NULL values in LEAD and LAG * 3:39 - FIRST and LAST VALUE for retrieving attributes * 5:01 - Practical example for retrieving top performing products * 6:30 - Customizing window specification for LAST VALUE * 8:00 - Using MAX and FIRST VALUE for more complex aggregations Continue Your Learning Journey with PostgreSQL! 🚀 ✅ Previous Video: https://youtu.be/OrUUippbNqw?si=XK5HN_Tis8J_tKAE ✅ Next Video: https://youtu.be/9B1A5EV_PsI?si=KFxYHc2EuR1yAA_v ✅ Full Course: https://youtube.com/playlist?list=PLf0swTFhTI8oQNiY2ZTf81zvKB7-y3y4e&feature=shared Connect with Us: * Newsletter: http://notifyme.itversity.com * LinkedIn: https://www.linkedin.com/company/itversity/ * Facebook: https://www.facebook.com/itversity * Twitter: https://twitter.com/itversity * Instagram: https://www.instagram.com/itversity/ 👉 Don’t forget to subscribe to https://www.youtube.com/itversityin YouTube channel for more tutorials! #sql #database #postgresql #sqlwindowfunctions #sqlwindowing