From: | "pgsql-general(at)list(dot)coretech(dot)ro" <pgsql-general(at)list(dot)coretech(dot)ro> |
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To: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: Temporal Databases, offtopic - relative updates |
Date: | 2006-02-28 11:40:47 |
Message-ID: | 440436BF.3070106@list.coretech.ro |
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Thread: | |
Lists: | pgsql-general |
hello,
I have a somehow related question to this topic: is it possible to know
(in postgresql) if an update on a column is absolute (set col = 3) or
relative to it's previous value (set col = col + 3)
in a trigger one have access to OLD row values and NEW row values, but
no correlation between the two. is this type of information available
somewhere in postgresql ?
thanks,
Razvan Radu
Rodrigo Sakai wrote:
> Hi everyone,
>
> I'm focus on temporal databases (not temporary), and I want to know
> if anyone here is studying this tecnologies too. So, we can exchange
> knowlegment. Specifically, anyone who is trying to implement on
> postgresql the aspect of time (temporal).
> These researches are lead by Richard Snodgrass. So, anyone who have
> something to share, please contact me!
>
> Thanks!!!
>
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