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 pr…