From: Dinesh Pandey <dpandey@secf.com>
To: 'Richard Huxton' <dev@archonet.com>
Cc: 'PostgreSQL' <pgsql-sql@postgresql.org>
Subject: Re: Prepared query ?
Date: Thu, 14 Apr 2005 20:33:45 +0530
Message-ID: <20050414150625.0A51653603@svr1.postgresql.org> (raw)
In-Reply-To: <425E852D.2020808@archonet.com>
Yes you got my problem correctly. I want to change tablename and values at
run time.
Is there any other way instead using "||" (append) ? like prepared
statement.
PREPARE fooplan (int, text, bool, numeric) AS
INSERT INTO foo VALUES($1, $2, $3, $4);
EXECUTE fooplan(1, 'Hunter Valley', 't', 200.00);
Thanks
Dinesh Pandey
-----Original Message-----
From: Richard Huxton [mailto:dev@archonet.com]
Sent: Thursday, April 14, 2005 8:29 PM
To: dpandey@secf.com
Cc: 'PostgreSQL'
Subject: Re: [SQL] Prepared query ?
Dinesh Pandey wrote:
> How can I
>
> 1. Write a prepared query and
> 2. Set values at run time and
> 3. Execute that query for different values.
> LOOP
> ...
> ...
> sql := INSERT INTO MYTABLE VALUES(?, ?);
> --EXECUTE (sql);
You don't say what language you want to use, but assuming it's plpgsql,
then for the simple case you can just do:
LOOP
INSERT INTO mytable VALUES (var1, var2);
END LOOP
Now, let's say you wanted to change mytable as well as the values, you'd use
sql := ''INSERT INTO '' || quote_ident(my_table_variable) || ''
VALUES ...etc'';
EXECUTE sql;
Does that help?
--
Richard Huxton
Archonet Ltd
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Cc: dpandey@secf.com, dev@archonet.com
Subject: Re: Prepared query ?
In-Reply-To: <20050414150625.0A51653603@svr1.postgresql.org>
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