From: Christoph Haller <ch@rodos.fzk.de>
To: emmanuel.engelhart@epita.fr
Cc: pgsql-sql@postgresql.org
Subject: Re: CREATE VIEW (dynamically)
Date: Tue, 12 Nov 2002 14:57:48 +0100
Message-ID: <3DD108DC.B259364B@rodos.fzk.de> (raw)
> CREATE FUNCTION "requests_insert_after" () RETURNS opaque AS '
> DECLARE
> view_name text;
> BEGIN
> view_name := ''request_'' || NEW.id;
> CREATE VIEW view_name AS select * from groups;
> return NEW;
> END' LANGUAGE 'plpgsql';
>
> CREATE TRIGGER "requests_insert_after" AFTER INSERT ON "requests" FOR
EACH ROW
> EXECUTE PROCEDURE "requests_insert_after" ();>>
>
> This code after an insertion on table "requests" give me this message
:
> <<
> PostgreSQL said: ERROR: parser: parse error at or near "$1"
> >>
>
> Why ?
>
You should check the documentation of plpgsql for the section
Executing dynamic queries (which also means commands like update, etc.)
e.g. to drop a view within plpgsql you have to code
EXECUTE ''DROP VIEW '' || quote_ident( view_name) ;
Regards, Christoph
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To: pgsql-sql@postgresql.org
Cc: ch@rodos.fzk.de, emmanuel.engelhart@epita.fr
Subject: Re: CREATE VIEW (dynamically)
In-Reply-To: <3DD108DC.B259364B@rodos.fzk.de>
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