Postgresql function return affected row count
<p>I created a function. I defined returning value void. But I want to show affected row count. How can I do? </p>

<pre><code>CREATE OR REPLACE FUNCTION update() RETURNS void  AS 
$BODY$
BEGIN
   update test_a set name='cde' where name='abc';
   update test_b set name='mno' where name='klm';
END;
$BODY$   
LANGUAGE plpgsql VOLATILE   
COST 100; 
ALTER FUNCTION update()   
OWNER TO postgres;
</code></pre>