File Groups For Table Partitioning And Storage

May 31, 2007

Hello,



I am building partitiong tables, partitioning on different file groups:



the question is:



Partitioned table referred to old data that are not frequent accessed for reporting can be stored on separate location(External storage, tape and so on) or to make partitioning functioning must all file groups must be presents?



If not, how can I separate old data from current ones (still using partitioning) to reduce the size of DB?



What it is the best for storage data and easy to access it when needs arise (eg reporting): Tape, external storage, others?



Thank

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(
[TimeKey] [int] NOT NULL,
[SegmentID] [int] NOT NULL,
[MyVal] [tinyint] NOT NULL
) ON [BigTablePS1] (TimeKey) -- see below for partition scheme

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,b.MyVal
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update t
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from BigTable t
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After the table is loaded, it would never get any inserts or deletes. only selects and updates.

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CREATE PARTITION FUNCTION [BigTableRangePF1] (int)
AS RANGE LEFT FOR VALUES
(
3680640 + 0*1440, -- 3680640 is the number of minutes between 2001/01/01 and 2008/01/01
3680640 + 1*1440,
3680640 + 2*1440,
3680640 + 3*1440,
...snip...
3680640 + 363*1440,
3680640 + 364*1440,
3680640 + 365*1440
);
GO

CREATE PARTITION SCHEME [BigTablePS1]
AS PARTITION [BigTableRangePF1]
TO
(
[PRIMARY],[PRIMARY],[PRIMARY],
...snip...
[PRIMARY],[PRIMARY],[PRIMARY]
);
GO


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Even with one partition for each day, I'll still have 24*60*20000/5 ~ 5m rows in each one.

5m seems like a manageable number. 2b does not.



elsasoft.org

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---------------------------------
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Code Snippet
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