Topic says it all. Anyone know the best way to write a median aggregate function in ms sql server 2k? I've seen a couple ways of doing it when I briefly searched google but they weren't presented as ...

SQL window functions provide extremely powerful and useful features that let you work with observations more easily. Different types explained here.

I would suggest you look at window functions, because typically they let you do the same thing in a much cleaner manner- but I always need a few experiments on real data to get them right.