How to SELECT the newest four items per category?

Question

I have a database of items. Each item is categorized with a category ID from a category table. I am trying to create a page that lists every category, and underneath each

Answer 1

ok after a googling the quick answer would it's not possible at least on mysql

this this thread for reference

maybe you should cache the result of that query if you are afraid to make fall down the server and you want the code to perform more well