PostgreSQL simple dblink cursor example

In PostgreSQL, dblink works fine to query the contents of a table remotely and insert into a new table. However, sometimes that table is too big to fit into memory. Here is an example function which uses cursors to do just that:

CREATE OR REPLACE FUNCTION get_data() RETURNS void AS $$
BEGIN
PERFORM dblink_connect('dbname=db hostaddr=host port=5432
user=user password=password');
PERFORM dblink_open('curs', 'select * from table');
LOOP
INSERT INTO table
SELECT data.*
FROM dblink_fetch('curs', 1)
AS data();
IF NOT FOUND THEN
EXIT;
END IF;
END LOOP;
PERFORM dblink_close('curs');
PERFORM dblink_disconnect();
END;
$$ LANGUAGE plpgsql;