Re: Update ordered

From: Andreas Joseph Krogh <andreak(at)officenet(dot)no>
To: pgsql-sql(at)postgresql(dot)org
Subject: Re: Update ordered
Date: 2014-01-27 15:01:11
Message-ID: OfficeNetEmail.22.db4f408b1acc02b2.143d43670c9@prod2
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På mandag 27. januar 2014 kl. 15:56:12, skrev Adrian Klaver <
adrian(dot)klaver(at)gmail(dot)com <mailto:adrian(dot)klaver(at)gmail(dot)com>>: On 01/27/2014 06:36
AM, Andreas Joseph Krogh wrote:
> Hi all.
> I want an UPDATE query to update my project's project_number in
> chronological order (according to the project's "created"-column) and
> tried this:
> with upd as(
>      select id from project order by created asc
> ) update project p set project_number = get_next_project_number() from
> upd where upd.id = p.id;
> However, the olders project doesn't get the smalles project_number.
> Any idea how to achive this?

That would seem to depend on what get_next_project_number() does, the
contents of which are unknown.   get_next_project_number() gets the next
project-number based on some custom logic.   What would be the best way to
update all project's project-number having the oldes project get the first
number returned by get_next_project_number() etc.?   Thanks.   --
Andreas Joseph Krogh <andreak(at)officenet(dot)no>      mob: +47 909 56 963
Senior Software Developer / CTO - OfficeNet AS - http://www.officenet.no
Public key: http://home.officenet.no/~andreak/public_key.asc  

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