SQL tree traversal

Question

I am not totally sure I am naming this right, but please bear with me.

I am wondering if is possible to do something like this in SQL(MySQL specifically): Let\'s say

Answer 1

I was just asking myself the same question. This is what i googled: http://moinne.com/blog/ronald/mysql/manage-hierarchical-data-with-mysql-stored-procedures

It works with stored procedures.

But so much logic in the DB is not a good thing in my opinion..