--- In IBObjects@y..., "Kaputnik" <delphi@k...> wrote:

> Did you check fort he BLANK IS NULL property in the FieldPorperties

of

> your query?
>

Yes, and it's not checked (in ColumnAttributes the property is
unchecked). So it does NOT consider blank as null.
In any case your suggestion makes clear that Jason has considered the
problem of the meaning of blanks varchars regarding nulls, and there
must be something wrong in IBO about that (seeLester Caine reply).
Thanks
Marco Menardi