On Fri, Aug 21, 2020 at 4:36 PM Bruce Momjian <br...@momjian.us> wrote:
> On Wed, Aug 5, 2020 at 11:29:31PM -0700, David G. Johnston wrote:
>
> > Removing "char" from the tutorial is a nice side-effect that we probably
> want
> > to do even if we keep "state".
>
> I think CHAR(2) is fine because it is always 2 characters.
>
You imply "it is always two non-blank characters" though that isn't what
CHAR(2) means. Adding CHECK (state ~ '^[A-Z]{2}$') and leaving the type as
text would be best from a pure model perspective - but this isn't the place
to teach that and for the same reason char(2) isn't terrible.
How is the attached patch, based on your suggestions?
>
Works for me.
David J.
