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我有一個基本的分區問題。sql server 2008分區
我有一個表,看起來像這樣:
CREATE TABLE [dbo].[WeatherStationData](
[Time] [smalldatetime] NOT NULL,
[pk_WS] [int] NOT NULL,
[TemperatureF] [decimal](5, 1) NULL,
....
CONSTRAINT [PK_WeatherStationData] PRIMARY KEY CLUSTERED
(
[Time] ASC,
[pk_WS] ASC
) [PRIMARY]
) ON [PRIMARY]
我創造了這個分區的功能:
CREATE PARTITION FUNCTION pfWSD (DATETIME) AS RANGE RIGHT
FOR
VALUES (
'01/01/2007',
'01/01/2008',
'01/01/2009',
'01/01/2010',
'01/01/2011',
'01/01/2012'
);
而這個分區方案:
CREATE PARTITION SCHEME [psWSD] AS PARTITION [pfWSD] TO (
[WSD0000]
,[WSD2007]
,[WSD2008]
,[WSD2009]
,[WSD2010]
,[WSD2011]
,[WSD2012]
)
當我運行:
SELECT $PARTITION.pfWSD([Time]) AS Partition,
COUNT(*) AS [COUNT] FROM dbo.WeatherStationData
GROUP BY $PARTITION.pfWSD([Time])
ORDER BY Partition ;
結果是這樣的:
Partition COUNT
----------- -----------
2 3396337
3 5408747
4 6576450
5 9602069
6 12650615
7 5577064
然而,當我在看的基礎文件,它們都是99%免費(初始大小爲2048MB,2047MB免費),以及主文件組仍大而且大多是滿的。該表是空的,並在設置分區後將數據加載到該表中。我不認爲分區工作,我還需要檢查什麼?