I was wondering if mysql had arrays. Because I want to work on a forum in mysql from scratch (lots of work I know) and need to think of a way to store topics/posts.

If mysql has arrays I was going to do a table for topics and an array inside the topics table for posts.

If mysql doesn't have arrays I was going to do a table for topics and a table for posts (very messy imo).

So does mysql have arrays?