From: | "Merlin Moncure" <mmoncure(at)gmail(dot)com> |
---|---|
To: | "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | "postgres general" <pgsql-general(at)postgresql(dot)org> |
Subject: | Re: boolean operator on interval producing strange results |
Date: | 2007-02-20 14:30:08 |
Message-ID: | b42b73150702200630w68416492ndd3d01dff67bdff2@mail.gmail.com |
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Lists: | pgsql-general |
On 2/19/07, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> "Merlin Moncure" <mmoncure(at)gmail(dot)com> writes:
> > # select ((now() - '1 day'::interval)::timestamp - now()) < 0;
> > ?column?
> > ----------
> > f <-- looks busted to me
> > (1 row)
>
> If you'd casted to timestamptz then I'd agree this is busted.
> As-is, it might have something to do with your timezone setting,
> which you didn't mention?
show timezone reports us/eastern in both cases. also, i don't really
see how this matters, since we are comparing '-1 days'::interval with
0 in both cases. in fact:
# show timezone;
TimeZone
------------
US/Eastern
(1 row)
# select ('-1 days'::interval) < 0;
?column?
----------
f
(1 row)
as it happens, after months and months of faithful service, this
machine decided to dump core last night. so, we are scheduling some
downtime + yum update. (my previous mail was wrong, production was the
non-updated box). this is the only environmental difference I can
think of. At the very least I can report back if this fixes the
problem.
merlin
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