mysql遍历数组执行更新（存储过程）

CREATE PROCEDURE init_reportUrl()
BEGIN
DECLARE s INT DEFAULT 0;
DECLARE r_id bigint(10);
DECLARE report CURSOR FOR select distinct id as r_id FROM ReportHotLine ;
-- 声明当游标遍历完后将标志变量置成某个值
DECLARE CONTINUE HANDLER FOR NOT FOUND SET s=1;
-- 打开游标
open report;
-- 将游标中的值赋值给变量，注意：变量名不要和返回的列名同名，变量顺序要和sql结果列的顺序一致
fetch report into r_id;
-- 当s不等于1，也就是未遍历完时，会一直循环
while s<>1 do
-- 执行业务逻辑
UPDATE wh_csyx.dy_pres30207800013_001_local a
JOIN ReportHotLine b ON a.gdId = b.ID
AND b.createtime = ( SELECT max( createtime ) FROM ReportHotLine WHERE ID = r_id )
SET blms = b.banliInfo where a.gdId =r_id;

-- 将游标中的值再赋值给变量，供下次循环使用
fetch report into r_id;
-- 当s等于1时表明遍历以完成，退出循环
end while;
-- 关闭游标
close report;
END;
call init_reportUrl();