MySQL Integer vs DateTime index

Question

Let me start by saying I have looked at many similar questions asked, but all of them relate to Timestamp and DateTime field type without indexing.

Answer 1

it depends on your application, as you can see in an awesome comparison and benchmark of DATETIME , TIMESTAMP and INT type in Mysql server in MySQL Date Format: What Datatype Should You Use? We Compare Datetime, Timestamp and INT. you can see in some situation INT has better perfomance than other and in some cases DATETIME has better performance. and It completely depends on your application