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Article #17344Re: sql vraagje
From: Ben De Rydt
Date: Wed, 05 Jan 2000 00:00
Date: Wed, 05 Jan 2000 00:00
35 lines
1884 bytes
1884 bytes
MindTrap wrote:
>
> id 1 2 3
> -----------------------------
> 1 eerste tweede derde
> 2 pif poef paf
> 3 eerste two derde
>
> en ik wil
> select id from tabel where 1="eerste" and 2="tweede"
> welnu, in plaats van die tabel gebruikt ge de volgende (no matter how
> abnormal):
>
> id | type | value
> ----------------------
> 1 1 eerste <-- record 1
> 1 2 tweede
> 1 3 derde
> 2 1 pif <-- record 2
> 2 2 poef
> 2 3 paf
> 3 1 eerste <-- record 3
> 3 2 two
> 3 3 three
SELECT ID FROM <tabel>
WHERE (type = 1 AND waarde = "eerste") AND
(type = 2 AND waarde = "two")
GROUP BY ID
maar daar had je zelf toch al kunnen achterkomen.
--
ben . de . rydt at pandora . be ------------------ your comments
http://users.pandora.be/bdr/ ------- inl. IPv6, Linux en Pandora
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X-Google-Language: DUTCH,ASCII-7-bit X-Google-Thread: fcea4,adf63b3fcd32c9b4 X-Google-Attributes: gidfcea4,public From: Ben De Rydt <ben@co.and.co> Subject: Re: sql vraagje Date: 2000/01/05 Message-ID: <38739698.5B8A5570@co.and.co> X-Deja-AN: 568750781 Content-Transfer-Encoding: 7bit References: <3873800B.CE8DB5BE@linuxfreak.com> <387382DE.95EA1484@co.and.co> <3873898A.B94BA56E@linuxfreak.com> <38738B1A.FCD7C056@co.and.co> <38738B31.57FF9425@linuxfreak.com> <38738CD3.8878F89C@co.and.co> <387393B9.FC892506@linuxfreak.com> X-Accept-Language: en Content-Type: text/plain; charset=us-ascii X-Complaints-To: abuse@pandora.be X-Trace: afrodite.telenet-ops.be 947099115 195.130.154.127 (Wed, 05 Jan 2000 20:05:15 MET) Organization: soms MIME-Version: 1.0 NNTP-Posting-Date: Wed, 05 Jan 2000 20:05:15 MET Newsgroups: be.comp.programming