Hi Ivan,

I checked the api guide. The problem was a typo error in a table name (a M instead of a N) I couldn't see. Checking the status array in depth I could realize about the problem.

Thank you,
Mauro.

--- In firebird-support@yahoogroups.com, "Ivan Prenosil" <Ivan.Prenosil@...> wrote:
>
> > I have a doubt about the XSQLDA parameter in isc_dsql_prepare api.
> ...
> > But if I have: SELECT field1 FROM table WHERE field2=?
> > What should I prepare?
>
> It is described in API Guide, you can download it here
> http://www.firebirdsql.org/index.php?op=doc
>