Complete PostgreSQL Course for Beginners - SQL Interview Question Most People Fail (Index Trick)

Why is your SQL index not working even after creating it? In this video, I break down a very common mistake developers make while writing queries using the WHERE clause. This small mistake forces the database to ignore the index and perform a full table scan, making your query slow. If you’re preparing for SQL interviews or working in data analysis, this is a concept you must understand. I’ve also shared a simple fix and an advanced solution using function-based index so you can optimize your queries properly. Comment SQL and I’ll share my SQL Index Mini Guide with you. Follow for more practical content on SQL and Data Analysis. ------------------------------------------------------------------------ ►►►LINKS◄◄◄ Blog: Previous Tutorial ► ============================= ►►►Camera Gears https://www.amazon.in/shop/manishsharma?listId=DU9UM0XL97KM&ref=idea_share_inf ►►► Work From Home Essential Tech That We Use Daily https://www.amazon.in/shop/manishsharma?listId=XAZ18JLLSNB5&ref=idea_share_inf ============================= ============================= Subscribe now for more database tutorials ============================= @RebellionRider ============================= ►►►Connect With Us ============================= https://www.instagram.com/RebellionRider/ https://www.facebook.com/TheRebellionRider/ https://twitter.com/RebellionRider https://www.linkedin.com/in/mannbhardwaj/ ============================= ►►►Books I refer to ============================= 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