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Article #15312

Re: Hjælp til SQL-streng

#15312
From: Jakob Nilsson
Date: Sun, 20 May 2001 12:27
24 lines
1864 bytes
"Jonas Delfs" <nospam@delfs.dk>
> Det jeg vil t�lle er polt_nr. Men kun r�kker hvor status ikke er 'UA',
og
> kun een pr. polt_nr.

Jeg m� indr�mme jeg ogs� er blevet lidt forvirret over hvad der egentlig
skal t�lles :-)

Men her er et fors�g:

SELECT SUM(Tabel.Antal)
FROM
(SELECT COUNT (DISTINCT polt_nr) AS Antal
 FROM order_table
 WHERE status <> 'UA'
 GROUP BY kunde_id) Tabel

Der der findes i inner-queryen er antallet af unikke polt numre pr.
kunde_id, dern�st summeres dette antal i den ydre query. Erstat Tabel og
Antal med det du nu synes de skal hedde :-)

Mvh.
Jakob
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From: "Jakob Nilsson" <jakobnilsson@hotmail.com>
Newsgroups: dk.edb.database
References: <9e1aem$2gg$1@sunsite.dk> <9e1cf8$g3v$1@sunsite.dk> <3B044117.65622DBD@hotmail.com> <9e312m$fc2$1@sunsite.dk> <9e3dfi$oiq$1@sunsite.dk>
Subject: Re: Hjælp til SQL-streng
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