Re: What is the good equivalent for ENUM ? - Mailing list pgsql-general

From scott.marlowe
Subject Re: What is the good equivalent for ENUM ?
Date
Msg-id Pine.LNX.4.33.0309031829270.25656-100000@css120.ihs.com
Whole thread Raw
In response to Re: What is the good equivalent for ENUM ?  (Ron Johnson <ron.l.johnson@cox.net>)
List pgsql-general
On Wed, 3 Sep 2003, Ron Johnson wrote:

> On Wed, 2003-09-03 at 09:50, Vivek Khera wrote:
> > >>>>> "SD" == Shridhar Daithankar <shridhar_daithankar@persistent.co.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.


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