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Get my Fundamentals of Database Engineering udemy course to learn more , link redirects to udemy with coupon applied https://database.husseinnasser.com 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 https://bit.ly/33ENps4 Become a Member on YouTube https://www.youtube.com/channel/UC_ML5xP23TOWKUcc-oAE_Eg/join 🧑‍🏫 Courses I Teach https://husseinnasser.com/courses 🏭 Backend Engineering Videos in Order https://backend.husseinnasser.com 💾 Database Engineering Videos https://www.youtube.com/playlist?list=PLQnljOFTspQXjD0HOzN7P2tgzu7scWpl2 🏰 Load Balancing and Proxies Videos https://www.youtube.com/playlist?list=PLQnljOFTspQVMeBmWI2AhxULWEeo7AaMC 🏛️ Software Archtiecture Videos https://www.youtube.com/playlist?list=PLQnljOFTspQXNP6mQchJVP3S-3oKGEuw9 📩 Messaging Systems https://www.youtube.com/playlist?list=PLQnljOFTspQVcumYRWE2w9kVxxIXy_AMo Become a Member https://www.youtube.com/channel/UC_ML5xP23TOWKUcc-oAE_Eg/join Support me on PayPal https://bit.ly/33ENps4 Stay Awesome, Hussein