Re: complicated query (newbie..)

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От Sam Mason
Тема Re: complicated query (newbie..)
Дата
Msg-id 20090409204245.GV12225@frubble.xen.chris-lamb.co.uk
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Ответ на Re: complicated query (newbie..)  (Marcin Krol <mrkafk@gmail.com>)
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On Thu, Apr 09, 2009 at 08:16:55PM +0200, Marcin Krol wrote:
> Sam Mason wrote:
> >On Thu, Apr 09, 2009 at 07:25:42PM +0200, Marcin Krol wrote:
> >>SELECT h.id, r.id, r.start_date, r.end_date
> >>  FROM hosts h
> >>    LEFT JOIN (reservation_hosts m INNER JOIN reservation r
> >>        ON m.reservation_id = r.id
> >>        AND (r.start_date,r.end_date) OVERLAPS
> >>        ('2009-04-09'::date,'2009-04-10'::date))
>
> >The dates here are the date range that you want to give to the user; I
> >was assuming that just because somebody doesn't have a reservation at
> >the moment you still don't want to put reservations going backwards and
> >forwards to infinity.
>
> Not backwards, but forward into some reasonable range, like 3 months (I
> want the user to see the nearby reservation in future).

I'm not sure if this is a question or something else.  If you're
wondering how to do this just use a range of ('2009-01-01'::date,
'2009-12-31'::date) to show all entries for this year.

--
  Sam  http://samason.me.uk/

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