MSSQL2008分区表

概念就很少说了,网上大把.  

--分区函数的做用是告诉SQL Server,如何将数据进行分区,例如按时间,按年龄,按省.

--而分区方案的做用则是告诉SQL Server,将已分区的数据放在哪一个文件组中. 多个硬盘上分开选择的文件组更好. 

一,用语句

建立,分区方案:

CREATE PARTITION SCHEME YearCustomerFollow AS PARTITION
YearCustomerFollowFunction TO([PRIMARY],[PRIMARY],[PRIMARY],[PRIMARY],[PRIMARY])

建立,分区函数:

CREATE PARTITION FUNCTION YearCustomerFollowFunction(datetime)
 AS RANGE RIGHT FOR VALUES('20100101','20110101','20120101','20130101')

删除一个分区:

ALTER PARTITION FUNCTION YearCustomerFollowFunction() MERGE RANGE ('20100101')

添加一个分区:

ALTER PARTITION SCHEME YearCustomerFollow NEXT USED [PRIMARY]     -- 分区方案
ALTER PARTITION FUNCTION YearCustomerFollowFunction() SPLIT RANGE ('20090101')  -- 分界值

建立分区:(这里的语句能够用向导生成更方便)

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 )

 查询分区表行数.

select $PARTITION.YearCustomerFollowFunction(birthyday) as 分区编号,count(id) as 记录数
from zzw_test
group by $PARTITION.YearCustomerFollowFunction(birthyday)

二,用向导

1,在要修改的表上右键->存储->建立分区.

2,选择分区列.

3,建立分区函数或选择之后的分区函数.

4,建立分区方案或选择现有分区方案.

5,映射分区,先设置边界.

6,能够看到边界值都一会儿已经设置好了.

7,建立完成.

查看:表右键->存储-管理压缩.能够看到各分区的行数,空间.

在控制台库->存储下能够直接看到刚建立的分区方案和分区函数.