Auto Create Statistics

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Auto Create Statistics

Mike Hays

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January 6, 2014 at 9:58 pm

#302407

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Ford Fairlane SSCertifiable Points: 7664 More actions · Answer 1

Nice back to basics question - thanks

Hope this helps...

Ford Fairlane
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Koen Verbeeck SSC Guru Points: 259155 More actions · Answer 2

Nice question, had to do some research.

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Richard Warr SSCertifiable Points: 6968 More actions · Answer 3

Koen Verbeeck (1/7/2014)
Nice question, had to do some research.

I Googled it too

Thomas Abraham SSChampion Points: 10761 More actions · Answer 4

Thanks for the question!

Under what circumstances would you want is_auto_create_stats_on set to FALSE?

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Mike Hays SSCommitted Points: 1871 More actions · Answer 5

Thomas Abraham (1/7/2014)
Thanks for the question!
Under what circumstances would you want is_auto_create_stats_on set to FALSE?

Thomas asked a good question, and it took me a couple of minutes to find a good answer.

Chun Liu wrote a good blog regarding SharePoint:

http://blogs.msdn.com/b/chunliu/archive/2011/11/17/auto-update-statistics-and-auto-create-statistics-on-or-off-for-sharepoint-2010-databases.aspx

My simple guess is this setting would be turned off when you do not want the database overhead of statistics collected. This would probably be a very rare case.

Thomas Abraham SSChampion Points: 10761 More actions · Answer 6

Mike Hays (1/7/2014)

My simple guess is this setting would be turned off when you do not want the database overhead of statistics collected. This would probably be a very rare case.

Thanks for the response. I figured that the reason would be performance due to overhead. But, couldn't think of an example in my experience where the overhead wasn't justified by performance improvement of later queries.

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Revenant SSC-Forever Points: 42467 More actions · Answer 7

Revenant

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January 7, 2014 at 9:06 am

#1678120

Nice: sent me to BOL... Thanks, Mike!

SQLRNNR SSC Guru Points: 281334 More actions · Answer 8

nice question - thanks

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Lokesh Vij SSChampion Points: 10836 More actions · Answer 9

Koen Verbeeck (1/7/2014)
Nice question, had to do some research.

+1 Did some reading before answering this question. Thanks Mike

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sqlnaive SSCoach Points: 17437 More actions · Answer 10

"Been there done that". Had spent some time on statistics related issue so never had to think twice.

SQLWinther SSCertifiable Points: 6294 More actions · Answer 11

Easy question, but important to remeber. You may need to create multicolumn statistics manually sometimes.

/Håkan Winther
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MCTS: SQL Server 2008, Implementation and Maintenance
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