Re: Prepared query ?

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