Re: What is the good equivalent for ENUM ?

On Wed, 3 Sep 2003, Ron Johnson wrote:

> On Wed, 2003-09-03 at 09:50, Vivek Khera wrote:
> > >>>>> "SD" == Shridhar Daithankar <shridhar_daithankar(at)persistent(dot)co(dot)in> writes:
> >
> > SD> On 3 Sep 2003 at 14:30, Bruno BAGUETTE wrote:
> > >> The problem is that this MySQL database uses ENUM, do you see what can I
> > >> do to migrate ENUM into PostgreSQL ?
> >
> > SD> varchar with check constraints. Add constraits to allow only
> > SD> certain values of varchar string.
> >
> > I used to do this. It turns out to be horribly inflexible when you
> > need to alter the enum values since the constraints cannot easily be
> > changed.
>
> It'll be better when domains have alterable constraints. Your
> way is the traditional (and best, IMO) way, though.

Speaking of enumeration, I noticed that the old copy of the SQL3 spec I
have lists an enumerated type. Is that still in the SQL 3 spec, and if
so, are there any plans to implement it in pgsql?

Just wondering.