vacuum full for all databases

Dear Sirs

I'm about to write plpgsql function which will "vacuum full" all existing
databases. Below is an example how to get list of databases.

What should I write instead of "raise notice" ?


CREATE OR REPLACE FUNCTION vacuum_all() RETURNS integer
    AS '
DECLARE
  query text;
  list RECORD;
BEGIN

FOR list IN SELECT datname FROM pg_catalog.pg_database WHERE NOT
datistemplate LOOP
  raise notice ''datname = %'',list.datname;

END LOOP;

RETURN 0;

END;



'
    LANGUAGE plpgsql;