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how to List out all tables indexes having index fragmentation more than 50% of databases.


how to List out all tables indexes having index fragmentation more than 50% of databases.

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Joie Andrew
Joie Andrew
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Make sure when you run that query you change the database your in to match the one your querying information about. Otherwise you will get information that might not be correct when the object_id function runs, as object_id is unique for that database.

Joie Andrew
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David Knapp
David Knapp
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I could not get this to work if the DB is running in SQL 2000 compatibility mode. I think for that the script needs to be changed a bit. Otherwise works well.
Neeraj Dwivedi
Neeraj Dwivedi
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Try this.

SELECT
B.name AS TableName
, C.name AS IndexName
, C.fill_factor AS IndexFillFactor
, D.rows AS RowsCount
, A.avg_fragmentation_in_percent
, A.page_count
FROM sys.dm_db_index_physical_stats(null,NULL,NULL,NULL,NULL) A
INNER JOIN sys.objects B
ON A.object_id = B.object_id
INNER JOIN sys.indexes C
ON B.object_id = C.object_id AND A.index_id = C.index_id
INNER JOIN sys.partitions D
ON B.object_id = D.object_id AND A.index_id = D.index_id
WHERE C.index_id > 0
GilaMonster
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David Knapp (12/17/2013)
I could not get this to work if the DB is running in SQL 2000 compatibility mode. I think for that the script needs to be changed a bit. Otherwise works well.


Change FROM sys.dm_db_index_physical_stats(DB_ID(),NULL,NULL,NULL,NULL) A to use a fixed value for the first parameter rather than the function. The function in parameters is disallowed under compat mode 80.

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
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GilaMonster
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Neeraj Dwivedi (12/17/2013)
Try this.

SELECT
B.name AS TableName
, C.name AS IndexName
, C.fill_factor AS IndexFillFactor
, D.rows AS RowsCount
, A.avg_fragmentation_in_percent
, A.page_count
FROM sys.dm_db_index_physical_stats(null,NULL,NULL,NULL,NULL) A
INNER JOIN sys.objects B
ON A.object_id = B.object_id
INNER JOIN sys.indexes C
ON B.object_id = C.object_id AND A.index_id = C.index_id
INNER JOIN sys.partitions D
ON B.object_id = D.object_id AND A.index_id = D.index_id
WHERE C.index_id > 0


That won't work well. With null as the first parameter all databases' index physical stats are pulled, but the sys.objects and sys.indexes are local to the database this is run in, all the other indexes will be filtered out by the inner join or, if the objectID happens to match an object in the current database, return incorrect object names.

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
We stand on the bridge and no one may pass


Neeraj Dwivedi
Neeraj Dwivedi
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My mistake.
Get database id from from sys.sysdatabases and pass that as first parameter.
David Knapp
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Thank you! I am not in the office for a few days but will try it out when I get back.
Duran
Duran
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Hey,

Yes its an old thread, but it helped me out today. Thanks for posting!

Regards,
D.
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