mysql 存储过程结合游标修改每一行记录的值

create PROCEDURE changestateId(OUT count_num INT)
BEGIN
DECLARE num INT DEFAULT 100;
DECLARE done INT DEFAULT 0;
DECLARE uId INT;
DECLARE cId INT;
DECLARE sId INT;

DECLARE thecur CURSOR FOR
    SELECT userId, id, iStateId from pr_clothing;

DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1;

SELECT COUNT(*) INTO num from pr_clothing;
SET count_num = num;
SELECT count_num;

set num = 0;
OPEN thecur;
    REPEAT
        FETCH NEXT FROM thecur INTO uId, cId, sId;
        if not done then
        -- SELECT uId;
            SET sId = sId - 9200 + 9200;
            UPDATE pr_clothing set iStateId = sId where userId = uId and id = cId;
            SET num = num + 1;
      end if;
    UNTIL done END REPEAT;
CLOSE thecur;

SELECT num;
END

-- set @pOUt = 1;
-- CALL changestateId(@pOUt);

-- DROP PROCEDURE changestateId;