Aw shucks, that one was easy... :-) Almost didn't answer or even read it all because I saw all the replies and figured someone else already did, but noticed it was still tagged as " Not Answered" so I kept reading...
If you haven't looked through the list of functions available in the SDK documentation, its highly recommended. If you installed it normally it will be in your Start menu (Start / All Programs / Solarwinds Orion SDK / Technical Reference). One you have the PDF open just click on "Functions Supported by SWQL" in the contents and it will take you right there.
Lots of good stuff there...
HTH!