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

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