SQL server 2005的表分区
2007-11-11 12:29:25 来源:WEB开发网下面来说下,在sql server(WINDOWS平台上强大的数据库平台) 2005的表分区里,如何对已经存在的有数据的表进行分区,其实道理和之前在http://www.cnblogs.com/jackyrong/archive/2006/11/13/559354.html说到一样,只不过交换下顺序而已,下面依然用例子说明:
依然在c盘的data2目录下建立4个文件夹,用来做4个文件组,然后建立数据库
use master
IF EXISTS (SELECT name FROM sys.databases WHERE name = N'Data Partition DB3')
DROP DATABASE [Data Partition DB3]
GO
CREATE DATABASE [Data Partition DB3]
ON Prima(最完善的虚拟主机管理系统)RY
(NAME='Data Partition DB Prima(最完善的虚拟主机管理系统)ry FG3',
FILENAME=
'C:\Data2\Prima(最完善的虚拟主机管理系统)ry\Data Partition DB Prima(最完善的虚拟主机管理系统)ry FG3.mdf',
SIZE=5,
MAXSIZE=500,
FILEGROWTH=1 ),
FILEGROUP [Data Partition DB3 FG1]
(NAME = 'Data Partition DB3 FG1',
FILENAME =
'C:\Data2\FG1\Data Partition DB3 FG1.ndf',
SIZE = 5MB,
MAXSIZE=500,
FILEGROWTH=1 ),
FILEGROUP [Data Partition DB3 FG2]
(NAME = 'Data Partition DB3 FG2',
FILENAME =
'C:\Data2\FG2\Data Partition DB3 FG2.ndf',
SIZE = 5MB,
MAXSIZE=500,
FILEGROWTH=1 ),
FILEGROUP [Data Partition DB3 FG3]
(NAME = 'Data Partition DB3 FG3',
FILENAME =
'C:\Data2\FG3\Data Partition DB3 FG3.ndf',
SIZE = 5MB,
MAXSIZE=500,
FILEGROWTH=1 ),
FILEGROUP [Data Partition DB3 FG4]
(NAME = 'Data Partition DB3 FG4',
FILENAME =
'C:\Data2\FG4\Data Partition DB3 FG4.ndf',
SIZE = 5MB,
MAXSIZE=500,
FILEGROWTH=1 )
然后建立一个数据表:
USE [Data Partition DB3]
go
CREATE TABLE MyTable
(ID INT NOT NULL,
Date DATETIME,
Cost money ) on [Prima(最完善的虚拟主机管理系统)ry]
并建立一个索引
USE [Data Partition DB3]
go
CREATE UNIQUE CLUSTERED INDEX MyTable_IXC
ON MyTable(ID) on [Prima(最完善的虚拟主机管理系统)RY]
接下来往表里增加数据
USE [Data Partition DB3]
go
declare @count int
set @count =-25
while @count <=100
begin
insert into MyTable select @count,getdate(),100.00
set @count=@count+1
end
set @count =101
while @count <=200
begin
insert into MyTable select @count,getdate(),200.00
set @count=@count+1
end
set @count =201
while @count <=300
begin
insert into MyTable select @count,getdate(),300.00
set @count=@count+1
end
set @count =301
while @count <=400
begin
insert into MyTable select @count,getdate(),400.00
set @count=@count+1
end
set @count =401
while @count <=800
begin
insert into MyTable select @count,getdate(),500.00
set @count=@count+1
end
此时查询一下,可以看到数据都在一个表里select * from sys.partitions where object_name(object_id)='MyTable'
我们再建立表分区函数use [Data Partition DB3]
GO
CREATE PARTITION FUNCTION [Data Partition Range](int)
AS RANGE LEFT FOR VALUES (100,200,300)
这里表明分区的原则是四个分区,从负数到100,101-200,201-300,大于300
当然,如果用right for values的话,就是从负数到99,100到199,200-299,和大于300
最后,把表分区函数应用到文件组里
USE [Data Partition DB3]
go
CREATE PARTITION SCHEME [Data Partition Scheme]
AS PARTITION [Data Partition Range]
TO ([Data Partition DB3 FG1], [Data Partition DB3 FG2], [Data Partition DB3 FG3],[Data Partition DB3 FG4]);
把原来建立好的表,移动到这个表分区里
Drop index MyTable_IXC on MyTable with (Move To [Data Partition Scheme] (ID) )
最后看一看select * from sys.partitions where object_name(object_id)='MyTable'
可以看到,原来的表的数据被正确分拆到四个文件组里去了,实现了表分区
http://www.cnblogs.com/jackyrong/archive/2006/11/16/562514.html
- ››SQL Server 2008 R2 下如何清理数据库日志文件
- ››sqlite 存取中文的解决方法
- ››SQL2005、2008、2000 清空删除日志
- ››SQL Server 2005和SQL Server 2000数据的相互导入...
- ››sql server 2008 在安装了活动目录以后无法启动服...
- ››sqlserver 每30分自动生成一次
- ››sqlite 数据库 对 BOOL型 数据的插入处理正确用法...
- ››sql server自动生成批量执行SQL脚本的批处理
- ››sql server 2008亿万数据性能优化
- ››SQL Server 2008清空数据库日志方法
- ››sqlserver安装和简单的使用
- ››SQL Sever 2008 R2 数据库管理
更多精彩
赞助商链接