SQL SERVER 2005中，終于引入了表分區(qū)，就是說，當(dāng)一個表里的數(shù)據(jù)很多時，可以將其分拆到多個的表里，大大提高了性能。下面舉例子說明之

比如，在C盤下建立如下幾個目錄C:Data2PrimaryC:Data2FG1C:Data2FG2C:Data2FG3C:Data2FG4

其中primary存放的是主數(shù)據(jù)庫文件，其他FG1--FG4存放四個單獨的文件組，可以見創(chuàng)立數(shù)據(jù)庫Data Partition DB2，如下

USE [master]GO/****** Object:; Database [Data Partition DB];Script Date: 10/08/2006 23:09:53 ******/IF; EXISTS (SELECT name FROM sys.databases WHERE name = N'Data Partition DB2')DROP DATABASE [Data Partition DB2]GOCREATE DATABASE [Data Partition DB2]ON PRIMARY(NAME='Data Partition DB Primary FG',FILENAME='C:Data2PrimaryData Partition DB Primary FG.mdf',SIZE=5,MAXSIZE=500,FILEGROWTH=1 ),FILEGROUP [Data Partition DB FG1](NAME = 'Data Partition DB FG1',FILENAME ='C:Data2FG1Data Partition DB FG1.ndf',SIZE = 5MB,MAXSIZE=500,FILEGROWTH=1 ),FILEGROUP [Data Partition DB FG2](NAME = 'Data Partition DB FG2',FILENAME ='C:Data2FG2Data Partition DB FG2.ndf',SIZE = 5MB,MAXSIZE=500,FILEGROWTH=1 ),FILEGROUP [Data Partition DB FG3](NAME = 'Data Partition DB FG3',FILENAME ='C:Data2FG3Data Partition DB FG3.ndf',SIZE = 5MB,MAXSIZE=500,FILEGROWTH=1 ),FILEGROUP [Data Partition DB FG4](NAME = 'Data Partition DB FG4',FILENAME ='C:Data2FG4Data Partition DB FG4.ndf',SIZE = 5MB,MAXSIZE=500,FILEGROWTH=1 )接下來，我們創(chuàng)建分區(qū)表函數(shù)，這其實可以理解為一個規(guī)則，說明如何以一個規(guī)則來將一個表來劃分，如下 use [Data Partition DB2]GOCREATE PARTITION FUNCTION [Data Partition Range](int)AS RANGE LEFT FOR VALUES (100,200,300)其中分區(qū)函數(shù)的名稱是Data Partition Range,后面的類型（int)表明接下來用來分區(qū)的那個字段的類型是INT類型，而VALUES (100,200,300)表明，將把表分為4個區(qū)了，是從負(fù)數(shù)到100，100-200，200-300，大于300。接下來，我們要創(chuàng)建分區(qū)架構(gòu)，即將分區(qū)函數(shù)應(yīng)用到我們分好的四個文件組里面去USE [Data Partition DB2]goCREATE PARTITION SCHEME [Data Partition Scheme]AS PARTITION [Data Partition Range]TO ([Data Partition DB FG1], [Data Partition DB FG2], [Data Partition DB FG3],[Data Partition DB FG4]);再創(chuàng)建表的結(jié)構(gòu)USE [Data Partition DB2]goCREATE TABLE MyTable(ID INT NOT NULL, Date DATETIME, Cost money); ON [Data Partition Scheme] (ID);

這里注意，ON [Data Partition Scheme] (ID);表明，劃分時以ID的大小作為劃分的根據(jù)，ON后要跟分區(qū)架購的名稱

最后，我們可以填充數(shù)據(jù)了

USE [Data Partition DB2]godeclare @count intset @count =-25while @count <=100begininsert into MyTable select @count,getdate(),100.00set @count=@count+1endset @count =101while @count <=200begininsert into MyTable select @count,getdate(),200.00set @count=@count+1endset @count =201while @count <=300begininsert into MyTable select @count,getdate(),300.00set @count=@count+1endset @count =301while @count <=400begininsert into MyTable select @count,getdate(),400.00set @count=@count+1endset @count =401while @count <=800begininsert into MyTable select @count,getdate(),500.00set @count=@count+1end

最后，我們可以查詢下，插入的這些數(shù)據(jù)，是否真的被劃分到四個不同的文件組里的表分區(qū)了，可以這樣看SELECT *, $PARTITION.[Data Partition Range](ID)FROM MyTable

http://www.cnblogs.com/jackyrong/archive/2006/11/13/559354.html