数据库问题 (急)!

[yao3892]

MS SQLServer数据库怎么才能在一个无序的表中查询出第30-40条的记录？

[唐诗三百首]

简单例子如下,各SQL版本通用..

 select identity(int,1,1) rn,* 
 into [临时表名]
 from [TableName]

 select * from [临时表名] where rn between 30 an 40

[ly745455]

+[Quote=引用 5 楼 ap0405140 的回复:]
简单例子如下,各SQL版本通用..

SQL code

select identity(int,1,1) rn,*
into [临时表名]
from [TableName]

select * from [临时表名] where rn between 30 an 40
[/Quote]

[yagebu1983]

采用Row_Number函数！！

[WXM8511]

[Quote=引用 5 楼 ap0405140 的回复:]
简单例子如下,各SQL版本通用..

SQL code


select identity(int,1,1) rn,*
into [临时表名]
from [TableName]

select * from [临时表名] where rn between 30 an 40
[/Quote]

正解

[mc168199]

木有积分了 杯具了

[cd731107]

[Quote=引用 5 楼 ap0405140 的回复:]
简单例子如下,各SQL版本通用..

SQL code

select identity(int,1,1) rn,*
into [临时表名]
from [TableName]

select * from [临时表名] where rn between 30 an 40
[/Quote]
这种方法也很实用

[qgqch2008]

row_number()

[bancxc]

[Quote=引用 1 楼 qgqch2008 的回复:]
row_number()
[/Quote]o

[yao3892]

[Quote=引用楼主 yao3892 的回复:]
MS SQLServer数据库怎么才能在一个无序的表中查询出第30-40条的记录？
[/Quote]
能不能举例？ 不会用这个函数啊

[--小F--]

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