One Query Compared to Three

[noonespecial]

Is there a large difference between running three queries or one?

I have a script I wrote, and I can do it in three queries and it works perfectly -- I think I can do it in one (or maybe two) if I thought it out a little more ... however, that would be a lot of joins and some other stuff.

My question is ... from a load standpoint ... is there a really significant reason to change it and do it in one instead?

Just curious what everyone thought.