Re: Setting a pre-existing index as a primary key

On Tue, Apr 8, 2008 at 10:03 PM, Jonah H. Harris <jonah(dot)harris(at)gmail(dot)com> wrote:
> On Tue, Apr 8, 2008 at 9:04 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> > "Jonah H. Harris" <jonah(dot)harris(at)gmail(dot)com> writes:
> > > I've run into a couple cases now where it would be helpful to easily
> > > assign an already-existing unique index as a primary key.
> >
> > You need to present a more convincing use-case than this unsupported
> > assertion. There's hardly any effective difference between a unique
> > index + NOT NULL constraints and a declared primary key ... so what
> > did you really need it for?
>
> Agreed, functionally there's not much of a difference. It's more of a
> matter of proper design identifying a primary key.
>

set right constraints it's good for documenting the system itself, i
like the idea...

--
regards,
Jaime Casanova