From: Larry Rosenman <ler@lerctr.org>
Organization: LERCTR Consulting
To: Henry Ortega <juandelacruz@gmail.com>
Subject: Re: best way to auto-update a field when row is updated
Date: Thu, 10 Mar 2005 14:21:33 -0600
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On Thursday 10 March 2005 02:09 pm, Henry Ortega wrote:
> I have the following table
>
> FIELD_A        |          FIELD_B          |           TSTAMP
> ---------------------------------------------------------------------------
>----------------------------- x                              y              
>            2005-03-10 14:56:47.456431
>
> TSTAMP = not null default now()
>
> What's the best way to always auto-update TSTAMP to it's
> default value whenever the row gets updated?
> (e.g. update TABLENAME set FIELD_A='zzz' where FIELD_A='x';
> should automatically set TSTAMP to now)
>
trigger on update/insert.


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-- 
Larry Rosenman                     http://www.lerctr.org/~ler
Phone: +1 214-351-4152                 E-Mail: ler@lerctr.org
US Mail: 3535 Gaspar Drive, Dallas, TX 75220-3611