一个关于游标的小问题 open cstucou --打开游标 fetch next from cstucou into @stuno --反转循环变量@i,当小于剩余名额时(@不<=@limitnum-@choosenum)继续分配 set @i=1 while @@fetch_status=0 and @i<=@limitnum-@choosenum begin update stucou set state='选中'where current of cstucou set @i=@i+1fetch next from cstucou into @couno end 红色的语句是什么意思?