mysql游标批量操作

BEGIN
    DECLARE _uuid VARCHAR(60);
    DECLARE _insertNum INT DEFAULT 0;
    DECLARE done int DEFAULT 0;
    #定义游标
    DECLARE rs_cursor CURSOR FOR 
       SELECT uuid,(10-IFNULL(rateNum,0)) as insertNum from product p 
           LEFT JOIN 
      (SELECT product_uuid,count(product_uuid) AS rateNum FROM rate GROUP BY product_uuid HAVING rateNum<10) as n
           ON p.uuid = n.product_uuid;
    DECLARE CONTINUE HANDLER FOR NOT FOUND SET done=1;
    OPEN rs_cursor;
    cursor_loop:LOOP
				FETCH rs_cursor INTO _uuid,_insertNum;
        IF done = 1 THEN
           LEAVE cursor_loop;
        END IF;
        SELECT _uuid,_insertNum;
        INSERT INTO rate(uuid,nick,result,created,content,tid,product_uuid,deleted,flag) 
          SELECT rand_string(10),nick,result,now(),content,NULL,_uuid,0,NULL FROM rate_sample ORDER BY RAND() LIMIT _insertNum;
    END LOOP;
    CLOSE rs_cursor;
END

 select count(*) from (SELECT s.phone_num,u.weixin_id,s.total_point FROM `app_db`.`si_receive_red_envelope` s left join app_user u on s.phone_num = u.phone_num  where  ifNull(u.weixin_id,'') !='')
m left join si_red_draw_log w on m.phone_num = w.phone_num where   ifNull(w.weixin_id,'') =''  and m.total_point >=25 and m.total_point <50