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Article #17347Re: sql vraagje
From: MindTrap
Date: Wed, 05 Jan 2000 00:00
Date: Wed, 05 Jan 2000 00:00
55 lines
2454 bytes
2454 bytes
Ben De Rydt wrote: > > 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 toegepast op het 1ste record met id 3: type=1 -> ok waarde=eerste -> ok ====> AND -> niet ok type=2 -> niet ok waarde=two -> niet ok met andere woorden: dit matcht nooit of vergis ik me? > > 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 -- --- Early bird gets the worm, but the second mouse gets the cheese.
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X-Google-Language: DUTCH,ASCII-7-bit X-Google-Thread: fcea4,adf63b3fcd32c9b4 X-Google-Attributes: gidfcea4,public From: MindTrap <IDONTLIKESPAM.MindTrap@linuxfreak.com> Subject: Re: sql vraagje Date: 2000/01/05 Message-ID: <3873A908.8D2AB38A@linuxfreak.com> X-Deja-AN: 568783356 Cache-Post-Path: marvin!unknown@tvd-10-67-52-33.tvd.kotnet.kuleuven.ac.be 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> <38739698.5B8A5570@co.and.co> X-Accept-Language: en Content-Type: text/plain; charset=us-ascii X-Complaints-To: abuse@belnet.be X-Trace: naxos.belnet.be 947104009 2190 134.58.127.3 (5 Jan 2000 20:26:49 GMT) Organization: KULeuvenNet X-Cache: nntpcache 2.3.3 (see http://www.nntpcache.org/) Mime-Version: 1.0 NNTP-Posting-Date: 5 Jan 2000 20:26:49 GMT Newsgroups: be.comp.programming