select * from
(
  select px = row_number() over(order by order by ctime desc) , a.*, e.name as operate, b.name as name, c.name as forumname, d.name as username from t_infomanager a, t_user b, t_forum c, t_user_reg d, log_oper e where e.oper = a.oper and b.seq = d.userid and (a.mac= d.mac or a.mac is null) and a.oper = '2' and a.ctime >= timestamp('2011-11-19 00:00:00') and a.ctime <= timestamp('2011-11-19 23:59:59') and a.userseq in (1,2,3,4) and a.userseq = b.seq and a.forumseq = c.seq  
) tt
where px between 1 and 10

--where px between 10 and 15

------解决方案--------------------
select top m-n *
from(select top m * from tb order by ...)t
order by ...

------解决方案--------------------
SQL code
select * from
(
  select px = row_number() over(order by ctime desc) , a.*, e.name as operate, b.name as name, c.name as forumname, d.name as username from t_infomanager a, t_user b, t_forum c, t_user_reg d, log_oper e where e.oper = a.oper and b.seq = d.userid and (a.mac= d.mac or a.mac is null) and a.oper = '2' and a.ctime >= timestamp('2011-11-19 00:00:00') and a.ctime <= timestamp('2011-11-19 23:59:59') and a.userseq in (1,2,3,4) and a.userseq = b.seq and a.forumseq = c.seq  
) tt
where px between 1 and 10

--where px between 10 and 15

------解决方案--------------------
SQL code
取n到m行

1. 
select top (n-m+1) * from tablename where id not in (select top n id from tablename order by id asc/*|desc*/) 

2. 
select top m * into 临时表(或表变量) from tablename order by columnname -- 将top m笔插入到临时表 
set rowcount n   --只取n条结果
select * from 表变量 order by columnname desc 

3. 
select top n * from  
(select top m * from tablename order by columnname) a 
order by columnname desc 


4.如果tablename里没有其他identity列，那么： 
先生成一个序列,存储在一临时表中.
select identity(int) id0,* into #temp from tablename 

取n到m条的语句为： 
select * from #temp where id0 > =n and id0  <= m 

如果你在执行select identity(int) id0,* into #temp from tablename这条语句的时候报错,那是因为你的DB中间的select into/bulkcopy属性没有打开要先执行： 
exec sp_dboption 你的DB名字,'select into/bulkcopy',true 


5.如果表里有identity属性，那么简单： 
select * from tablename where identity_col between n and m  

6.SQL2005开始.可以使用row_number() over()生成行号
;with cte as
(
 select id0=row_number() over(order by id),* from tablename
)
select * from cte where id0 between n to m