Tables most and least used in SQL Server

SQLServerCentral is supported by Red Gate Software Ltd.

Popular Topics

Home

Members

Calendar

Who's On

Home » SQL Server 2008 » T-SQL (SS2K8) » Tables most and least used in SQL Server

Tables most and least used in SQL Server

Rate Topic

Display Mode

Topic Options

Author

Message

Shadab Shah

Posted Tuesday, September 25, 2012 10:54 PM

SSC-Enthusiastic

Group: General Forum Members
Last Login: Yesterday @ 9:07 PM
Points: 162, Visits: 336

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.

Post #1364431

Kivan

Posted Wednesday, September 26, 2012 12:56 AM

Forum Newbie

Group: General Forum Members
Last Login: Thursday, November 15, 2012 9:14 PM
Points: 6, Visits: 73

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

Smile

Kivan G

Post #1364460

Evil Kraig F

Posted Wednesday, September 26, 2012 1:03 AM

SSCertifiable

Group: General Forum Members
Last Login: 2 days ago @ 10:09 PM
Points: 5,658, Visits: 6,100

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.

- Craig Farrell

Never stop learning, even if it hurts. Ego bruises are practically mandatory as you learn unless you've never risked enough to make a mistake.

For better assistance in answering your questions | Forum Netiquette
For index/tuning help, follow these directions. |Tally Tables
Twitter: @AnyWayDBA

Post #1364462

GilaMonster

Posted Wednesday, September 26, 2012 1:24 AM

SSC-Dedicated

Group: General Forum Members
Last Login: Today @ 8:36 AM
Points: 37,660, Visits: 29,913

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 2008, MVP
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

Post #1364475

Grant Fritchey

Posted Wednesday, September 26, 2012 4:04 AM

SSChampion

Group: General Forum Members
Last Login: Today @ 8:46 AM
Points: 13,371, Visits: 25,147

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;

----------------------------------------------------
"The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood..." Theodore Roosevelt
The Scary DBA
Author of: SQL Server 2012 Query Performance Tuning
SQL Server 2008 Query Performance Tuning Distilled
and
SQL Server Execution Plans

Product Evangelist for Red Gate Software

Post #1364544

« Prev Topic | Next Topic »

Permissions