when indexes are useless | The Backend Engineering Show

head to https://database.husseinnasser.com to get a discount coupon for my Introduction to Database Engineering course In this episode of the backend engineering show, I’ll discuss three instances where indexes can be useless and might add overhead to your operations. Let us discuss. 0:00 Intro 1:34 What is an Index? 4:00 The Cost of Indexes 6:40 Most values are the similar 13:00 WHERE UPPER(NAME)=‘RICK’ 17:10 Composite Index 23:00 How do I know if I’m using an Index