Re: [MySQL] ID-v�rdier i tabel

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Article #14995

#14995

From: Svenne Krap
Date: Sat, 28 Jul 2001 20:39

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On Fri, 27 Jul 2001 23:07:03 +0200, junk@osxhacks.com (Christian
Flintrup) wrote:

>Hej,

>
>Hvordan laver jeg det s�dan, at hvis man fx sletter nr. 2, s� bliver det
>s�dan her
>
>1       Finn    M�nevang
>2       Ole     Vejby
>3       Ronnie  Klosterbo
>
>I stedet for
>
>1       Finn    M�nevang
>3       Ole     Vejby
>4       Ronnie  Klosterbo
>
>Alts� s� den selv "vedligeholder" ID-kolonnen s� tallene er i r�kkef�lge

Mysql kan det desv�rre ikke... <flamebait>i en rigtig database ville
du oprette en "on delete" trigger</flamebait>

Som ogs� andre skriver, har du sikkert ikke lyst til at g�re det..
Hvis trangen alligevel melder sig :

delete from "tabel" where id=2;
update "tabel" set id=id-1 where id >2;

Svenne
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From: Svenne Krap <usenet@krap.dk>
Newsgroups: dk.edb.database
Subject: Re: [MySQL] ID-v�rdier i tabel
Date: Sat, 28 Jul 2001 22:39:18 +0200
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