Re: /contrib/unixdate: Broke in cvs tip.

From: Larry Rosenman <ler(at)lerctr(dot)org>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: PostgreSQL Hackers List <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: /contrib/unixdate: Broke in cvs tip.
Date: 2001-05-30 00:56:59
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* Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> [010529 10:07]:
> Larry Rosenman <ler(at)lerctr(dot)org> writes:
> > I tried to use the unixdate contrib, and got the following:
> I think unixdate is suffering from bit-rot. Most or all of what it
> does is now part of the mainframe anyway.
Aha! I couldn't find what I needed...
> > Any ideas? (I need SOMETHING that takes a unix timestamp and turns it
> > to timestamp. )
> There are a number of ways. I tend to rely on the binary equivalence
> between int4 and abstime:
> regression=# select now()::abstime::int4;
> ?column?
> -----------
> 991145365
> (1 row)
> regression=# select 991145365::int4::abstime::timestamp;
> ?column?
> ------------------------
> 2001-05-29 10:09:25-04
> (1 row)
This ugly one worked for me, but I'd still like to see
a more general way to move from a unix timestamp to datetime with out
the 3 casts....
> but the more officially supported way to do the former is
> date_part('epoch', timestamp), and I think there is also an
> Approved Way to do the latter. (Thomas?)
Thanks again, Tom!


Larry Rosenman
Phone: +1 972-414-9812 E-Mail: ler(at)lerctr(dot)org
US Mail: 1905 Steamboat Springs Drive, Garland, TX 75044-6749

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