送分!!
declare   @t   table(id   int   primary   key,coll   decimal   (10,2)) 
 insert   @t   select   1,26.21 
 union   all   select   2,4.21   
 union   all   select   3,76.55 
 union   all   select   4,58.02 
 union   all   select   10,53.02   
 union   all   select   11,66.35 
 union   all   select   8,52.10 
 union   all   select   9,12.25   
 应该很简单,可我想半天没想出来         就是怎么选出中间那部分数据
------解决方案--------------------什么规律?   
------解决方案--------------------select * 
 from @t 
 where id in (3, 4, 10)
------解决方案--------------------declare @t table(id int primary key,coll decimal (10,2)) 
 insert @t select 1,26.21 
 union all select 2,4.21   
 union all select 3,76.55 
 union all select 4,58.02 
 union all select 10,53.02   
 union all select 11,66.35 
 union all select 8,52.10 
 union all select 9,12.25   
 seelct top 3 * from @t 
 where id not in ( 
 select top 2 id from @t  
 ) 
------解决方案--------------------估计不能做到吧,id自动按照升序排列的,取不到
------解决方案--------------------id 即然是primary key,insert时已经排序了 
 你这个不加其它字段没办法的
------解决方案--------------------除非id不为主键,才可以
------解决方案--------------------SELECT TOP * FROM @t WHERE id NOT IN(SELECT TOP 2 id FROM @t)
------解决方案--------------------declare @t table(id int primary key,coll decimal (10,2)) 
 insert @t select 1,26.21 
 union all select 2,4.21   
 union all select 3,76.55 
 union all select 4,58.02 
 union all select 10,53.02   
 union all select 11,66.35 
 union all select 8,52.10 
 union all select 9,12.25   
 DECLARE @COUNT INT 
 DECLARE @A INT 
 DECLARE @B INT 
 DECLARE @C INT   
 SELECT @COUNT = COUNT(*) FROM @t 
 SELECT @COUNT  
 SELECT @A  = @COUNT/3   --- 上   
 IF (@COUNT%3 = 1) 
   BEGIN 
        SELECT @C = @A +1 
        SELECT @B =  @A 
    END 
 ELSE  
 	 IF (@COUNT%3 = 2) 
           BEGIN 
 	SELECT @B  = @A+1 
 	SELECT @C  = @A+1 
 	END 
 ELSE   
 	IF (@COUNT%3 =  0) 
 	BEGIN 
 	SELECT @B =  @A 
 	SELECT @C = @A 
 	END   
 SELECT @A ---- 上 
 SELECT @B ---- 中 
 SELECT @C -----下   
  select top @B * from  @t where id not in ( select top @A id   from @t)
------解决方案--------------------哦..不明你最后要的是什么