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SQL server 2005的表分區(qū)

瀏覽:135日期:2023-10-31 13:52:34

下面來(lái)說(shuō)下,在SQL SERVER 2005的表分區(qū)里,如何對(duì)已經(jīng)存在的有數(shù)據(jù)的表進(jìn)行分區(qū),其實(shí)道理和之前在http://www.cnblogs.com/jackyrong/archive/2006/11/13/559354.html說(shuō)到一樣,只不過(guò)交換下順序而已,下面依然用例子說(shuō)明: 依然在c盤(pán)的data2目錄下建立4個(gè)文件夾,用來(lái)做4個(gè)文件組,然后建立數(shù)據(jù)庫(kù)

use masterIF; EXISTS (SELECT name FROM sys.databases WHERE name = N'Data Partition DB3')DROP DATABASE [Data Partition DB3]GOCREATE DATABASE [Data Partition DB3]ON PRIMARY(NAME='Data Partition DB Primary FG3',FILENAME='C:Data2PrimaryData Partition DB Primary FG3.mdf',SIZE=5,MAXSIZE=500,FILEGROWTH=1 ),FILEGROUP [Data Partition DB3 FG1](NAME = 'Data Partition DB3 FG1',FILENAME ='C:Data2FG1Data Partition DB3 FG1.ndf',SIZE = 5MB,MAXSIZE=500,FILEGROWTH=1 ),FILEGROUP [Data Partition DB3 FG2](NAME = 'Data Partition DB3 FG2',FILENAME ='C:Data2FG2Data Partition DB3 FG2.ndf',SIZE = 5MB,MAXSIZE=500,FILEGROWTH=1 ),FILEGROUP [Data Partition DB3 FG3](NAME = 'Data Partition DB3 FG3',FILENAME ='C:Data2FG3Data Partition DB3 FG3.ndf',SIZE = 5MB,MAXSIZE=500,FILEGROWTH=1 ),FILEGROUP [Data Partition DB3 FG4](NAME = 'Data Partition DB3 FG4',FILENAME ='C:Data2FG4Data Partition DB3 FG4.ndf',SIZE = 5MB,MAXSIZE=500,FILEGROWTH=1 )然后建立一個(gè)數(shù)據(jù)表:USE [Data Partition DB3]goCREATE TABLE MyTable(ID INT NOT NULL,Date DATETIME,Cost money ) on [primary]并建立一個(gè)索引USE [Data Partition DB3]goCREATE UNIQUE CLUSTERED INDEX MyTable_IXCON MyTable(ID) on [PRIMARY]接下來(lái)往表里增加數(shù)據(jù)USE [Data Partition DB3]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此時(shí)查詢(xún)一下,可以看到數(shù)據(jù)都在一個(gè)表里select * from sys.partitions where object_name(object_id)='MyTable'我們?cè)俳⒈矸謪^(qū)函數(shù)use [Data Partition DB3]GOCREATE PARTITION FUNCTION [Data Partition Range](int)AS RANGE LEFT FOR VALUES (100,200,300)這里表明分區(qū)的原則是四個(gè)分區(qū),從負(fù)數(shù)到100,101-200,201-300,大于300當(dāng)然,如果用right for values的話(huà),就是從負(fù)數(shù)到99,100到199,200-299,和大于300最后,把表分區(qū)函數(shù)應(yīng)用到文件組里USE [Data Partition DB3]goCREATE 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]);把原來(lái)建立好的表,移動(dòng)到這個(gè)表分區(qū)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,原來(lái)的表的數(shù)據(jù)被正確分拆到四個(gè)文件組里去了,實(shí)現(xiàn)了表分區(qū)

http://www.cnblogs.com/jackyrong/archive/2006/11/16/562514.html

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