create procedure set_user_attribute
(
    IN user_id INT,
    IN attribute_id INT,
    IN attribute_value varchar(255),
    IN attribute_value_id INT
)
BEGIN
    -- come back and do the kick-ass 1, -1 thing.
    insert into user_attribute_value (id, user_id, attribute_id, value)
        values (null, user_id, attribute_id, attribute_value); 
END
GO