PostgreSQL: Select a Random Number in a Range

This select is easy to convert a simple function to get random numbers between two values:

CREATE OR REPLACE FUNCTION get_random_number(INTEGER, INTEGER)
 RETURNS INTEGER AS $$
DECLARE
    start_int ALIAS FOR $1;
    end_int ALIAS FOR $2;
BEGIN
    RETURN trunc(random() * (end_int-start_int) + start_int);
END;
$$ LANGUAGE 'plpgsql' STRICT;