我已经举了这个奇怪行为的小例子

    SET NOCOUNT ON;
    create table #tmp
    (id int identity (1,1),
    value int);

    insert into #tmp (value) values(10);
    insert into #tmp (value) values(20);
    insert into #tmp (value) values(30);

    select * from #tmp;

    declare @tmp_id int, @tmp_value int;
    declare tmpCursor cursor for 
    select t.id, t.value from #tmp t
    --order by t.id;

    open tmpCursor;

    fetch next from tmpCursor into @tmp_id, @tmp_value;

    while @@FETCH_STATUS = 0
    begin
        print 'ID: '+cast(@tmp_id as nvarchar(max));

        if (@tmp_id = 1 or @tmp_id = 2)
            insert into #tmp (value)
            values(@tmp_value * 10);

        fetch next from tmpCursor into @tmp_id, @tmp_value;
    end

    close tmpCursor;
    deallocate tmpCursor;

    select * from #tmp;
    drop table #tmp;

我们可以借助print游标如何解析#tmp表中的新行来进行观察。但是，如果我们order by t.id在游标声明中取消注释-新行将不被解析。

这是预期的行为吗？