概念就不多說了,網上大把.
--分區函數的作用是告訴SQL Server,如何将資料進行分區,例如按時間,按年齡,按省.
--而分區方案的作用則是告訴SQL Server,将已分區的資料放在哪個檔案組中. 多個硬碟上分開選擇的檔案組更好.
一,用語句
建立,分區方案:
CREATE PARTITION SCHEME YearCustomerFollow AS PARTITION
YearCustomerFollowFunction TO([PRIMARY],[PRIMARY],[PRIMARY],[PRIMARY],[PRIMARY])
建立,分區函數:
CREATE PARTITION FUNCTION YearCustomerFollowFunction(datetime)
AS RANGE RIGHT FOR VALUES('20100101','20110101','20120101','20130101')
删除一個分區:
ALTER PARTITION FUNCTION YearCustomerFollowFunction() MERGE RANGE ('20100101')
添加一個分區:
ALTER PARTITION SCHEME YearCustomerFollow NEXT USED [PRIMARY] -- 分區方案
ALTER PARTITION FUNCTION YearCustomerFollowFunction() SPLIT RANGE ('20090101') -- 分界值
建立分區:(這裡的語句可以用向導生成更友善)
USE [SQL_ZZW]
GO
BEGIN TRANSACTION
CREATE CLUSTERED INDEX [ClusteredIndex_on_YearCustomerFollow_01] ON [dbo].[ZZW_test]
(
[birthyday]
)WITH (SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF) ON [YearCustomerFollow]([birthyday])
DROP INDEX [ClusteredIndex_on_YearCustomerFollow_01] ON [dbo].[ZZW_test] WITH ( ONLINE = OFF )
查詢分區表行數.
select $PARTITION.YearCustomerFollowFunction(birthyday) as 分區編号,count(id) as 記錄數
from zzw_test
group by $PARTITION.YearCustomerFollowFunction(birthyday)
二,用向導
1,在要修改的表上右鍵->存儲->建立分區.
<a href="http://blog.51cto.com/attachment/201303/174636257.jpg" target="_blank"></a>
2,選擇分區列.
<a href="http://blog.51cto.com/attachment/201303/174815541.jpg" target="_blank"></a>
3,建立分區函數或選擇以後的分區函數.
<a href="http://blog.51cto.com/attachment/201303/175832623.jpg" target="_blank"></a>
4,建立分區方案或選擇現有分區方案.
<a href="http://blog.51cto.com/attachment/201303/175952329.jpg" target="_blank"></a>
5,映射分區,先設定邊界.
<a href="http://blog.51cto.com/attachment/201303/175905366.jpg" target="_blank"></a>
6,可以看到邊界值都一下子已經設定好了.
<a href="http://blog.51cto.com/attachment/201303/180054607.jpg" target="_blank"></a>
7,建立完成.
<a href="http://blog.51cto.com/attachment/201303/180156929.jpg" target="_blank"></a>
<a href="http://blog.51cto.com/attachment/201303/180205117.jpg" target="_blank"></a>
檢視:表右鍵->存儲-管理壓縮.可以看到各分區的行數,空間.
<a href="http://blog.51cto.com/attachment/201303/180302286.jpg" target="_blank"></a>
在控制台庫->存儲下可以直接看到剛建立的分區方案和分區函數.
<a href="http://blog.51cto.com/attachment/201303/180608296.jpg" target="_blank"></a>
本文轉自 idyllic_cyty 51CTO部落格,原文連結:http://blog.51cto.com/aizzw/1160531