Re: Triggers using PL/pgSQL

Is it really necessary to build a SQL string and use execute? It
seems you could just issue the INSERT statement.

On Jul 31, 2006, at 12:52 AM, Aaron Bono wrote:

> CREATE OR REPLACE FUNCTION my_table_history_fn () RETURNS SETOF
> opaque AS
> '
> BEGIN
> -- if a trigger insert or update operation occurs
> IF TG_OP = ''INSERT'' OR TG_OP = ''UPDATE'' THEN
> execute
> ''INSERT INTO my_table_history ( '' ||
> '' my_table_id, '' ||
> '' my_value, '' ||
> '' create_dt '' ||
> '') VALUES ( '' ||
> '' '''''' || NEW.my_table_id || '''''', '' ||
> '' '''''' || NEW.my_value || '''''', '' ||
> '' now() '' ||
> '');''
> ;
> RETURN NEW;
> END IF;
> END;
> '
> LANGUAGE 'plpgsql' VOLATILE CALLED ON NULL INPUT SECURITY INVOKER;

John DeSoi, Ph.D.
http://pgedit.com/
Power Tools for PostgreSQL