At 12.21 16/12/2004, you wrote:
>Am Donnerstag, 16. Dezember 2004 11:34 schrieb Roberto Fichera:
> > Hi all,
> >
> > I have a table acct as (username, terminatedate, terminatecause)
> > I would like to build a query which returns three columns orderd by data
> > like:
> >
> > date_trunc( 'day', terminatedate ) | count(cause1) | count(cause2)
> >
> > where cause1/2 are two type of termination cause from the field
> > terminatecause.
> >
> > for example acct table could be:
> >
> > user1|01/01/2004 01:01:01| error
> > user2|01/01/2004 01:02:01| error
> > user1|01/01/2004 02:00:01| normal
> > user3|02/01/2004 10:00:01| normal
> > user2|02/01/2004 10:10:01| error
> >
> > I would like to obtain:
> >
> > date |normal| error
> > 01/01/2004| 1 | 2
> > 02/01/2004| 1 | 1
>
>try something like this:
>
>SELECT
> date_trunc( 'day', terminatedate ) AS day,
> SUM(
> CASE
> WHEN cause = 'error'
> THEN 1
> ELSE 0
> END
> ) AS error_count,
> SUM(
> CASE
> WHEN cause = 'normal'
> THEN 1
> ELSE 0
> END
> ) AS normal_count,
>
>FROM acct AS acct1
>GROUP BY day
>ORDER BY day ASC;
Many thanks! This works well :-)!
>kind regards,
>janning
Roberto Fichera.
