open sx_mm_xs;-- 打开游标
loop --开始循环
fetch sx_mm_xs into vat;--从游标中取值赋给变量 vat
----当**时退出循环,类似于(sqlser:WHILE @@FETCH_STATUS = 0)
exit when sx_mm_xs%notfound;
update zb_hy z set z.d_sx_mm_sale=vat.d_sale,z.d_sx_mn=vat.d_nn_sale
where z.run_date=vat.run_date;--执行 s...