sql随机查询问题

Question

select top(20) PaperId,CreationTime  from TB_Paper where QuestionTypeId=1 and PaperDegree ='1'  union all select top(30) PaperId,CreationTime from TB_Paper where QuestionTypeId=1 and PaperDegree ='2' ORDER BY NEWID()我想要随机查询出满足的条件  根据NEWID()   可是  这样写会报出消息 104，级别 16，状态 1，第 1 行如果该语句包含 UNION、INTERSECT 或 EXCEPT 运算符，则 ORDER BY 项必须出现在选择列表中。和排序字段的时候是一样的 必须要将排序字段同时查询进去，可是这是个随机函数，没办法同时查询  有什么办法解决吗？

Answer 1

select * from (

select top(20) PaperId,CreationTime  from TB_Paper where QuestionTypeId=1 and PaperDegree ='1'  union all 
select top(30) PaperId,CreationTime from TB_Paper where QuestionTypeId=1 and PaperDegree ='2

) order by newid()