I wrote a bayesian document classifier for one project I was working on - in SQL. Training the system took one INSERT and a small word-split function. Classifyi

I wrote a bayesian document classifier for one project I was working on - in SQL. Training the system took one INSERT and a small word-split function. Classifying the documents took one SELECT. Even in F#, I couldn't have written a more elegant or more performant solution. In a procedural language it would have been a mess of loops and roundtrips. Good SQL is almost a pure description of your desired result, with none of the "this is how you should do it" cruft. I don't have anything against ORMS - they're almost mandatory due to O-R-impedance mismatch - but too often I see them used instead of operations that should rightly be server-side. And none of US have injection problems, because we're binding our parameters, right? ;-)