From: "Eugen Gass" <gass@intend.de>
To: <pgsql-sql@postgresql.org>
Cc: <pgsql-admin@postgresql.org>
Subject: Re: [SQL] Trigger
Date: Thu, 17 Feb 2005 10:29:14 +0100
Message-ID: <LKEAIFJAEICHBHJOIFOCCECDCAAA.gass@intend.de>
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In-Reply-To: <4213B039.1070302@sajt.cz>


Hi,
Thank you ALL for the fast help

it works fine with following code:

CREATE OR REPLACE FUNCTION synchronize () RETURNS trigger AS 'BEGIN
NEW.objectid := NEW.gid; RETURN NEW; END;' LANGUAGE plpgsql;

CREATE TRIGGER syncl_holz_lager AFTER INSERT ON holz_lagerplatz FOR EACH ROW
EXECUTE PROCEDURE synchronize();

Best Regards

Eugen


-----Ursprüngliche Nachricht-----
Von: Pavel Rabel [mailto:pavel@sajt.cz]
Gesendet: Mittwoch, 16. Februar 2005 21:43
An: Eugen Gass
Cc: pgsql-sql@postgresql.org
Betreff: Re: [SQL] Trigger


It requires a bit more work in PostgreSQL to create a trigger.

 From the documentation: "It is not currently possible to write a
SQL-language trigger function. Trigger functions can be written in C or
in some of the available procedural languages."

I guess you will prefer to write the trigger in PL/pgSQL, have a look at
http://www.postgresql.org/docs/8.0/interactive/plpgsql-trigger.html

Regards

Pavel

Eugen Gass wrote:

>Hi,
>
>I'm trying to create a trigger on PostgreSQL
>
>it should be like an oracle(sql) sample code:
>
>create or replace trigger frei_polygon_sync
>after INSERT on frei_polygon
>Referencing NEW as newROW
>for each row
>Begin
> :newRow.objektid :=  :newRow.gid;
> :
>end;
>
>Can sombody help me to do the same on Postrgres
>
>Thanks
>
>Best Regards
>
>EG
>
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