Hi Lori,
thanks for your suggestions.
I have post my request also on PTC/User and this is the link of what we discuss with Mike Lockwood.
http://portal.ptcuser.org/p/fo/st/thread=55413
If I can take advantage of this thread, I would like to say that help about Query Builder is a thing PTC do not give very well.
There are so many types of object in Windchill and there's practically no documentation about how to join all that types.
Another thing I don't understand is why in the Windchill standard installation there are so few report available, while, if you ask TS or KB, you can have it many other.
If this report are available in TS or KB, why it isn't already available in Windchill, and I have to lost my time in search of them?