Get my Fundamentals of Database Engineering udemy course to learn more , link redirects to udemy with coupon applied This is a practical video on Database Indexing where I explain what is an index, why do we need it and how it can improve the performance of the queries. Also how (if used incorrectly) it can slow down your queries intro 0:00 What is an index 0:30 Describe Table 2:15 SELECT [ID] WHERE ID 4:00 SELECT [NAME] WHERE ID 6:30 SELECT [ID] WHERE [NAME] (No index) 9:20 SELECT [ID] WHERE NAME LIKE 11:12 CREATE INDEX ON [NAME] 12:00 SELECT [ID] WHERE NAME (Indexed) 12:50 SELECT [1D] WHERE NAME LIKE (Indexed) 14:30 Summary 16:00 Support my work on PayPal Become a Member on YouTube 🧑‍🏫 Courses I Teach 🏭 Backend Engineering Videos in Order 💾 Database Engineering Videos 🏰 Load Balancing and Proxies Videos 🏛️ Software Archtiecture Videos 📩 Messaging Systems Become a Member Support me on PayPal Stay Awesome, Hussein