Re: How to query for Interval

thanks Richard and Andreas. You rock.

On 4/12/06, A. Kretschmer <andreas.kretschmer@schollglas.com> wrote:
> am  12.04.2006, um  2:23:12 +0530 mailte Vishal Kashyap  folgendes:
> > Hi,
> >
> >
> > I have a table with time stamps in it . These timestamp represent a event count.
> > I just wanted to know how could I query such that I get a count of
> > event per hour.
> >
> > Table structure is
> >
> > my_table(id serial, time_event timestamp,event varchar(200));
> >
> > I want to do something like
> > select count(id) from  my_table where time_event in (every 1 hour);
>
> *untested*
>
> select x, count(b.*)
>         from generate_series(0,23) x,
>                 my_table y
>         where date_trunc('hour', y.time_event) '2006/04/12'::date + (x||'hour')::interval
>         group by x
>         order by x;
>
> The result should be a table for every hour for the given date.
>
>
> HTH, Andreas
> --
> Andreas Kretschmer    (Kontakt: siehe Header)
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--
With Best Regards,
Vishal Kashyap.
http://www.vishal.net.in