Re: Should we add xid_current() or a int8->xid cast?

On Thu, Jul 25, 2019 at 12:42 PM Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Andres Freund <andres(at)anarazel(dot)de> writes:
> > On 2019-07-24 20:34:39 -0400, Tom Lane wrote:
> >> Yeah, I would absolutely NOT recommend that you open that can of worms
> >> right now. We have looked at adding unsigned integer types in the past
> >> and it looked like a mess.
>
> > I assume Thomas was thinking more of another bespoke type like xid, just
> > wider. There's some notational advantage in not being able to
> > immediately do math etc on xids.
>
> Well, we could invent an xid8 type if we want, just don't try to make
> it part of the numeric hierarchy (as indeed xid isn't).

Yeah, I meant an xid64/xid8/fxid/pg_something/... type that isn't a
kind of number.

--
Thomas Munro
https://enterprisedb.com