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Basit's SQL Server Tips

Basit Farooq is a Lead Database Administrator, Trainer and Technical Author. He has more than a decade of IT experience in development, technical training and database administration on Microsoft SQL Server platforms. Basit has authored numerous SQL Server technical articles, and developed and implemented many successful database infrastructure, data warehouse and business intelligence projects. He holds a master's degree in computer science from London Metropolitan University, and industry standard certifications from Microsoft, Sun, Cisco, Brainbench, Prosoft and APM, including MCITP Database Administrator 2008, MCITP Database Administrator 2005, MCDBA SQL Server 2000 and MCTS .NET Framework 2.0 Web Applications.

List all Objects and Indexes per Filegroup / Partition

Today, I received a call from friend asking how he can find out which database object belongs to which filegroup.

Well to find out this information can be achieved by writing a simple query using the following system catalogues: sys.filegroups, sys.indexes, sys.database_files and sys.data_spaces.

For example, here is my version of the query to return this information:

-- The following two queries return information about 
-- which objects belongs to which filegroup
SELECT OBJECT_NAME(i.[object_id]) AS [ObjectName]
    ,i.[index_id] AS [IndexID]
    ,i.[name] AS [IndexName]
    ,i.[type_desc] AS [IndexType]
    ,i.[data_space_id] AS [DatabaseSpaceID]
    ,f.[name] AS [FileGroup] 
    ,d.[physical_name] AS [DatabaseFileName]
FROM [sys].[indexes] i
INNER JOIN [sys].[filegroups] f
    ON f.[data_space_id] = i.[data_space_id]
INNER JOIN [sys].[database_files] d
    ON f.[data_space_id] = d.[data_space_id]
INNER JOIN [sys].[data_spaces] s
    ON f.[data_space_id] = s.[data_space_id]
WHERE OBJECTPROPERTY(i.[object_id], 'IsUserTable') = 1
ORDER BY OBJECT_NAME(i.[object_id])
    ,f.[name]
    ,i.[data_space_id]
GO

See the sample output generated by this query, when I executed against AdventureWork2012 sample database.

ObjectsInFileGroups

I hope you will find the information return by this query useful.


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