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Tables most and least used in SQL Server


Tables most and least used in SQL Server

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Shadab Shah
Shadab Shah
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Hi,

I wanted to know this just to increased my information as i am a newbie. I found out this on internet but couldn't find out any satisfactory answer to this question. I would like to know the table which is the most and least used in the database.
Kivan
Kivan
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Hope this helps you..

SELECT TableName, COUNT(*) [Dependency Count]
FROM (
Select Distinct
o.Name 'TableName',
op.Name 'DependentObject'
From SysObjects o
INNER Join SysDepends d ON d.DepId = o.Id
INNER Join SysObjects op on op.Id = d.Id
Where o.XType = 'U'
Group by o.Name, o.Id, op.Name
) x
GROUP BY TableName
ORDER BY 2 desc

:-)

Kivan G
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Do not trust sysdepends, it lies like a rug.

There is no easy method to be sure of how often a table is used, particularly for select statements. You'd start with tracing proc calls and ad hoc queries and drill down on their counts, which will eventually lead you to the tables. You would then extrapolate from there.


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GilaMonster
GilaMonster
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On 2008, use sys.dm_sql_referenced_entities and sys.dm_sql_referencing_entities. They're a hell of a lot more reliable that sysdepends.

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
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Grant Fritchey
Grant Fritchey
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It does depend on how you defined "used". You could also take a look at the index usage statistics to see how often a clustered index (which is a table) or a heap (table w/o a clustered index) is accessed. This is a really simple example:

SELECT   OBJECT_NAME(object_id, database_id) AS ObjectName,
ddius.user_lookups,
ddius.user_scans,
ddius.user_seeks,
ddius.user_updates
FROM sys.dm_db_index_usage_stats AS ddius
WHERE OBJECTPROPERTY(ddius.object_id, 'IsUserTable') = 1;



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