随机选择10条数据
select top 10 *, NewID() as random from table order by random
NewID() 方法返回一个 GUID,如:EE95A489-B721-4E8A-8171-3CA8CB6AD9E4su
随机数
cast(ceiling(rand() * 100) as int)就生成1至100之间任一整数