How do I determine what filegroup my partition data is stored in?

Seeder question: I have a table whose clustered index is created on a partition scheme - how do I determine what file group each partition is stored in using a query? It needs to be a query rather than referencing the DDL because the information is needed for a space report.

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asked Oct 27, 2009 at 06:57 PM in Default

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Matt Whitfield ♦♦
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This turned out to be tougher than I thought it would. I had to do some serious BOL research to figure out the connection (sys.allocation_units). I decided to include the approximate number of rows from sys.partitions as some extra information.

DECLARE @TableName sysname = 'MyTable';

SELECT p.partition_number, fg.name, p.rows FROM sys.partitions p INNER JOIN sys.allocation_units au ON au.container_id = p.hobt_id INNER JOIN sys.filegroups fg ON fg.data_space_id = au.data_space_id WHERE p.object_id = OBJECT_ID(@TableName)

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answered Oct 28, 2009 at 12:12 AM

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Tom Staab ♦
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asked: Oct 27, 2009 at 06:57 PM

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Last Updated: Oct 27, 2009 at 06:57 PM

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