Remember that epoch is a number of seconds, plain and simple so you can't
get milliseconds from epoch, unless you wanted to carry zeros out to
infinity :-)
Good luck!
-Mitch
----- Original Message -----
From: "mars g miro" <mars@cannoncreek.com>
To: "Tom Lane" <tgl@sss.pgh.pa.us>; <pgsql-sql@postgresql.org>;
<pgsql-general@postgresql.org>
Sent: Tuesday, July 17, 2001 9:22 PM
Subject: [GENERAL] Re: epoch to show millseconds
> On Wednesday 18 July 2001 09:32, "Tom Lane" <tgl@sss.pgh.pa.us> wrote:
> > > > Mars G Miro <mars@cannoncreek.com> writes:
> > > how do I make it accurate up to milliseconds value?
> >
> > You don't. current_timestamp depends on the time() system call,
> > which only returns a number accurate to one second.
> >
>
> Well, I managed to have a workaround for it by:
> punkdb=# select date_part('epoch', current_timestamp) ||
> trim(to_char(date_part('millisecond', timeofday()::timestamp),'999'));
>
> ?column?
> --------------
> 995418886281
> (1 row)
>
>
> > There is a higher-precision current time function in 7.1, but I
> > forget the details ... see the docs. IIRC it existed but was
> > buggy in 7.0, so you'll need to update.
> >
>
> This is on 7.0.3
>
> > regards, tom lane
>
> My sole purpose is to generate a primary key, w/c I believe is sufficient
and
> unique enough to avoid double records (or errors that an existing record
of
> the same epoch exist, if it's only up to the second).
>
> Thanks, for the response though, I really appreciate it ;-)
>
>
>
> cheers
> mars
> --
> "I gained nothing at all from Supreme Enlightenment, and for that very
> reason it is called Supreme Enlightenment."
> -- Gotama Buddha
>
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