From: Tom Lane <tgl@sss.pgh.pa.us>
To: Stefan Sylla <stefansylla@gmx.de>
Cc: pgsql-sql@postgresql.org
Subject: Re: update column based on postgis query on anther table
Date: Tue, 16 Jul 2013 01:24:33 -0400
Message-ID: <317.1373952273@sss.pgh.pa.us> (raw)
In-Reply-To: <51E4B5A5.4040805@gmx.de>
References: <51E4B5A5.4040805@gmx.de>
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Stefan Sylla <stefansylla@gmx.de> writes:
> Now I want to use a trigger function to automatically update the column
> 'id_test1_poly' in tabel 'test1_point':
> /**/
> create or replace function test1_point_get_id_test1_poly() returns
> trigger as $$
> begin
> new.id_test1_poly=test1_point_get_id_test1_poly(new.id);
> return new;
> end;
> $$
> language plpgsql volatile;
> -- create trigger for function:
> create trigger test1_point_get_id_test1_poly
> after insert or update on test1_point for each row execute procedure
> test1_point_get_id_test1_poly();
I think you need that to be a BEFORE insert or update trigger. In
an AFTER trigger, it's too late to affect the stored row.
regards, tom lane
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To: pgsql-sql@postgresql.org
Cc: tgl@sss.pgh.pa.us, stefansylla@gmx.de
Subject: Re: update column based on postgis query on anther table
In-Reply-To: <317.1373952273@sss.pgh.pa.us>
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