--- In IBObjects@yahoogroups.com, Helen Borrie <helebor@t...> wrote:

>
> Marco,
> Use a view for the unioned set, and apply the WHERE clause to the

query on

> the view.

Helen, you are invaluable! It works really good.
Never used views before, I remember some problems/bugs/difficulties
associated with them... so I avoided them until now.
In any case, I badly needed a solution, and it works very good.
I've started looking at IBO source, but I think that it should be very
hard improving it for Having without a deep understanding of IBO "low
level", that I don't have.
thanks again
Marco Menardi