sql2005分区表示例

SQL2005分区表可以在一定程度上解决海量数据的性能问题，比如可以规避高访问量数据区段的io竞争，可以缩小你查询数据范围的索引大小。 msdn参考

http://msdn.microsoft.com/zh-cn/library/ms345146.aspx 一个完整的脚本示例

--drop database dbPartitionTest   
  
--测试数据库     
  
create database dbPartitionTest   
  
go   
  
  
  
use    
  
dbPartitionTest   
  
go   
  
  
  
--增加分组   
  
alter database dbPartitionTest ADD FILEGROUP P200801   
  
alter database dbPartitionTest ADD FILEGROUP P200802   
  
alter database dbPartitionTest ADD FILEGROUP P200803   
  
go   
  
--分区函数   
  
CREATE PARTITION FUNCTION part_Year(datetime)   
  
 AS RANGE LEFT FOR VALUES    
  
(    
  
'20080131 23:59:59.997','20080229 23:59:59.997','20080331 23:59:59.997'  
  
)    
  
go   
  
--增加文件组   
  
ALTER DATABASE dbPartitionTest ADD FILE (NAME = N'P200801',FILENAME = N'c:\tb_P200801.ndf',SIZE = 1MB,MAXSIZE = 500MB,FILEGROWTH = 1MB)TO FILEGROUP P200801   
  
ALTER DATABASE dbPartitionTest ADD FILE (NAME = N'P200802',FILENAME = N'c:\tb_P200802.ndf',SIZE = 1MB,MAXSIZE = 500MB,FILEGROWTH = 1MB)TO FILEGROUP P200802   
  
ALTER DATABASE dbPartitionTest ADD FILE (NAME = N'P200803',FILENAME = N'c:\tb_P200803.ndf',SIZE = 1MB,MAXSIZE = 500MB,FILEGROWTH = 1MB)TO FILEGROUP P200803   
  
go   
  
--分区架构   
  
CREATE PARTITION SCHEME part_YearScheme  AS PARTITION part_Year   TO (P200801,P200802,P200803,[PRIMARY])   
  
go   
  
  
  
CREATE TABLE [dbo].t_part     
  
(name varchar(100) default newid(),date datetime NOT NULL)   
  
ON part_YearScheme (date)   
  
go   
  
  
  
--添加测试数据,每天1条   
  
declare @date datetime   
  
set @date='2007-12-31'  
  
while @date<='2008-04-01'  
  
begin   
  
    insert into t_part(date)values(@date)   
  
    set @date=@date+1  
  
end   
  
go   
  
--查询数据分布在哪些分区   
  
select $partition.part_Year(date) as 分区编号,* from t_part  order by date     
  
--查询数据库文件   
  
go   
  
sp_helpfile