>
> AFAIR FB will not allow you to alter a type of a field if it has any
> dependencies (used inside a SP or trigger for example). So you will

need

> to empty the procedure/trigger body, alter the domain, recreate the
> SP/trigger.

No, it seems to allow it (on 1.5 anyway). I don't think I ever select
these fields into variables, but they are definitely used in the where
clause of queries inside some of my procedures.

My worry is whether Firebird is internally doing everything it needs
to when extending the field.

Adam