Re: Create a function that updates the record with and timestamps

From: Adrian Klaver <adrian(dot)klaver(at)gmail(dot)com>
To: pgsql-general(at)postgresql(dot)org
Cc: Chris Barnes <compuguruchrisbarnes(at)hotmail(dot)com>, andreas(dot)kretschmer(at)schollglas(dot)com
Subject: Re: Create a function that updates the record with and timestamps
Date: 2010-03-23 00:32:45
Message-ID: 201003221732.45958.adrian.klaver@gmail.com
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On Monday 22 March 2010 10:55:36 am Chris Barnes wrote:
> I see examples for updating tables using a function, but I would like to
> pull the row requested and modify the last_modified column with
> current_date and push the modified data back into the same row.
>
>
>
> I did see an example of how to use old and new at this at this link, but it
> is vague.
>
>
>
> http://www.faqs.org/docs/ppbook/x20655.htm#TRIGGERFUNCTIONVARIABLES
>

Something like this:

CREATE OR REPLACE FUNCTION public.ts_update()
RETURNS trigger AS

$Body$
BEGIN
NEW.ts_update:=timeofday();
RETURN NEW;
END;
$Body$
LANGUAGE 'plpgsql';

--
Adrian Klaver
adrian(dot)klaver(at)gmail(dot)com

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