Thanks Jim,

This makes it all clear! I never suspected that these kind of queries could be any trouble in older VFP versions. I used these kind of queries a lot but never noticed any trouble... Maybe i've been lucky all the time. This means a lot of work for me to rewrite my app's so i can run them in VFP8 but now i know why there's a difference in the limitations.

Thanks again!

Willem-Jan van Ede