SQL Tips and Tricks - Hidden SQL Difference You Didn’t Know

Think ISNULL and COALESCE are the same in SQL? Most developers do. But they are not. In this video, I explain the real difference between ISNULL and COALESCE with practical examples that can impact your reports, calculations, and query results. We will cover data type behavior, string truncation scenarios, multiple arguments support, and when to use each function in real projects. If you use SQL Server, this is one small concept that can save you from big production issues. If you found this helpful, like the video, share it with your friends, and subscribe for more SQL and Data Engineering content. Zero to hero(Advance) SQL Aggregation: https://youtu.be/5Ighj_2PGV0 Most Asked Join Based Interview Question: https://youtu.be/xR87ctOgpAE Solving 4 Trick SQL problems: https://youtu.be/Ck1gQrlS5pQ Data Analyst Spotify Case Study: https://youtu.be/-YdAIMjHZrM Top 10 SQL interview Questions: https://youtu.be/Iv9qBz-cyVA Interview Question based on FULL OUTER JOIN: https://youtu.be/KQfWd6V3IB8 Playlist to master SQL : https://youtube.com/playlist?list=PLBTZqjSKn0IeKBQDjLmzisazhqQy4iGkb Rank, Dense_Rank and Row_Number: https://youtu.be/xMWEVFC4FOk #sql #dataengineer #null