DELIMITER //

​

CREATE FUNCTION PageCount ( value INT )

RETURNS varchar(10) DETERMINISTIC

​

BEGIN

​

   DECLARE level varchar(20);

​

   IF value < 500 THEN

      SET level = 'Low';

​

   ELSEIF value >= 500 AND value <= 4000 THEN

      SET level = 'Medium';

​

   ELSE

      SET level = 'High';

​

   END IF;

​

   RETURN level;

​

END; //

​

DELIMITER ;