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SELECT StatMan


SELECT StatMan

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HildaJ
HildaJ
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Does anyone know what the query below means? I'm running into this type of query pretty frequently an I'm not sure how to find out the problem, if there's any.


SELECT StatMan([SC0])
FROM
(
SELECT TOP 100 PERCENT [AT_field_3] AS [SC0]
FROM [dbo].[tablename]
WITH
(
READUNCOMMITTED
)
ORDER BY [SC0]
) AS _MS_UPDSTATS_TBL

Thanks.
GilaMonster
GilaMonster
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It's a statistics update, probably auto-stats.

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
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HildaJ
HildaJ
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I have a job running statistics, that's generating it?

use [DatabaseName]
GO
UPDATE STATISTICS [dbo].[tablename]
WITH FULLSCAN
GO

Do you know why is selecting some tables and not others?
SQLRNNR
SQLRNNR
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The cause for it to not select some tables is likely due to how your code is written.

Please provide the entire code that is generating your update stats so we can help you identify what is happening.



Jason AKA CirqueDeSQLeil
I have given a name to my pain...
MCM SQL Server, MVP


SQL RNNR

Posting Performance Based Questions - Gail Shaw

GilaMonster
GilaMonster
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HildaJ (7/26/2013)
I have a job running statistics, that's generating it?


Either that or the automatic stats updates, or both.

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


HildaJ
HildaJ
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This is all that the sql monitor tool throws out to the log:

SELECT StatMan([SC0])
FROM
(
SELECT TOP 100 PERCENT [AT_field_3] AS [SC0]
FROM [dbo].[tablename]
WITH
(
READUNCOMMITTED
)
ORDER BY [SC0]
) AS _MS_UPDSTATS_TBL

It seems to dump this log when I ran the maintance plan to update the stats. My maintenace plans has this:

use [DatabaseName]
GO
UPDATE STATISTICS [dbo].[tablename]
WITH FULLSCAN
GO
GilaMonster
GilaMonster
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The Statman query is what's run internally for statistics updates.

What exactly is the problem here?

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


HildaJ
HildaJ
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I'm not sure if there's a problem, I have not seen this query before and I was inquiring information about it. I see now that updating statistics generates these queries. It seems that this is normal operation on part of sql server.
SQLRNNR
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HildaJ (7/26/2013)
I'm not sure if there's a problem, I have not seen this query before and I was inquiring information about it. I see now that updating statistics generates these queries. It seems that this is normal operation on part of sql server.


Yes it is



Jason AKA CirqueDeSQLeil
I have given a name to my pain...
MCM SQL Server, MVP


SQL RNNR

Posting Performance Based Questions - Gail Shaw

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