--- In firebird-support@yahoogroups.com, Vlad Orlovsky
<vlad.orlovsky@...> wrote:

>
> Thanks Adam.
>
> Do you know if there is a performance hit of any kind when using

DOMAINs for table columns?

>
> For example:
>
> SELECT SUM(SIZE) FROM DIRS
>
> for SIZE(INTEGER NOT NULL) vs SIZE(DOM_PRI_KEY)
>
> where DOMAIN DOM_PRI_KEY AS INTEGER NOT NULL

If there is I have never noticed it.

Adam