Re: [SQL] Interval subtracting

Ühel kenal päeval, N, 2006-03-02 kell 10:13, kirjutas Scott Marlowe:
> On Thu, 2006-03-02 at 00:45, Hannu Krosing wrote:
> > Ühel kenal päeval, K, 2006-03-01 kell 14:36, kirjutas Scott Marlowe:
..
> > > We don't say 42 degrees, -12 minutes when measuring arc, do we? Then
> > > again, maybe some folks do. It just seems wrong to me.
> >
> > But we do say both "quarter past three" (3 hours 15 min) and "quarter to
> > four" (4 hours -15 min) when talking about time.
>
> But the military says 1515 or 1545 or 0315 or 0345, because if they get
> the time wrong they shell the wrong place and kill their own soldiers.

do they also speak so of intervals ?

hannu=# select now(), now() - '-1 hour ago'::interval;
now | ?column?
-------------------------------+-------------------------------
2006-03-02 19:47:38.042408+02 | 2006-03-02 18:47:38.042408+02
(1 row)

You see what I mean - perfectly precise and unconfusable :)

> I.e. getting it right is important to them. So they use exact
> language. I prefer the more exact way.

And in the current global era they must also speak in GMT all the time,
to avoid any confusion :P

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Hannu