From: Achilleus Mantzios <achill@matrix.gatewaynet.com>
To: Neal Lindsay <neal.lindsay@peaofohio.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: automatic time/user stamp - rule or trigger?
Date: Wed, 5 Feb 2003 17:48:30 -0200 (GMT+2)
Message-ID: <Pine.LNX.4.44.0302051745400.7803-100000@matrix.gatewaynet.com> (raw)
In-Reply-To: <b1r864$2mpp$1@news.hub.org>
On Wed, 5 Feb 2003, Neal Lindsay wrote:
> I have a table that I want to keep track of the user who last modified
> it and the timestamp of the modification. Should I use a trigger or a rule?
>
> CREATE TABLE stampedtable (
> stampedtableid SERIAL PRIMARY KEY,
> updatestamp timestamp NOT NULL DEFAULT now(),
> updateuser name NOT NULL DEFAULT current_user,
> sometext text
> );
>
> I suspect that I want a rule, but all the examples in the documentation
> seem to update a separate table and not override (or add) the
> insert/update to the timestamp and name columns.
You may want to use rules if you need rewriting.
What you actually need is some sort of driver to a specific table.
You could create a view to that table (to hide the accounting columns),
and then create rules on that view that do the job as you wish.
>
> Thanks,
> -Neal
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Don't 'kill -9' the postmaster
>
==================================================================
Achilleus Mantzios
S/W Engineer
IT dept
Dynacom Tankers Mngmt
Nikis 4, Glyfada
Athens 16610
Greece
tel: +30-10-8981112
fax: +30-10-8981877
email: achill@matrix.gatewaynet.com
mantzios@softlab.ece.ntua.gr
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To: pgsql-sql@postgresql.org
Cc: achill@matrix.gatewaynet.com, neal.lindsay@peaofohio.com
Subject: Re: automatic time/user stamp - rule or trigger?
In-Reply-To: <Pine.LNX.4.44.0302051745400.7803-100000@matrix.gatewaynet.com>
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