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SQL Server 2005
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Problem with statistics
Problem with statistics
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Matt-1034261
Matt-1034261
Posted Wednesday, February 16, 2011 9:35 AM
SSC Journeyman
Group: General Forum Members
Last Login: Tuesday, April 02, 2013 5:40 AM
Points: 88,
Visits: 277
Hi
I have noticed that looking at the execution plan of one of our sql queries there is a little yellow triangle telling me that some of the columns do not have statistics.
I updated the statistics containing the columns that were being complained about and yet the yellow traingle warning sign still continues to appear
Do I need to do something else?
Thanks
Matt
Post #1065094
GilaMonster
GilaMonster
Posted Wednesday, February 16, 2011 10:02 AM
SSC-Dedicated
Group: General Forum Members
Last Login: Today @ 11:21 AM
Points: 37,686,
Visits: 29,943
The warning triangle is saying there are statistics missing. Update stats only updates existing stats, it won't add new ones.
Is auto_create_stats on? What's the object that the warning is on?
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 #1065111
Matt-1034261
Matt-1034261
Posted Wednesday, February 16, 2011 10:16 AM
SSC Journeyman
Group: General Forum Members
Last Login: Tuesday, April 02, 2013 5:40 AM
Points: 88,
Visits: 277
GilaMonster (2/16/2011)
The warning triangle is saying there are statistics missing. Update stats only updates existing stats, it won't add new ones.
If I expand the statistics node on the table that has the problem columns there is a statistic in there that contains the colums that are supposedly missing. I clicked on the 'update statistics for these colums' checkbox hoping that it would clear the error.
GilaMonster (2/16/2011)
Is auto_create_stats on?
Not sure, how would I check that?
GilaMonster (2/16/2011)
What's the object that the warning is on?
It appears to be an index that is on the table
Post #1065117
Matt-1034261
Matt-1034261
Posted Wednesday, February 16, 2011 10:22 AM
SSC Journeyman
Group: General Forum Members
Last Login: Tuesday, April 02, 2013 5:40 AM
Points: 88,
Visits: 277
I just checked the database properties and it looks like auto create stats is set to false
Post #1065123
Matt-1034261
Matt-1034261
Posted Wednesday, February 16, 2011 11:25 AM
SSC Journeyman
Group: General Forum Members
Last Login: Tuesday, April 02, 2013 5:40 AM
Points: 88,
Visits: 277
I just used this: -
USE <database name>;
GO
ALTER DATABASE <database name>
SET AUTO_CREATE_STATISTICS ON;
ALTER DATABASE <database name>
SET AUTO_UPDATE_STATISTICS ON;
GO
and it seems to fix the problem as the warning sign is gone now
Post #1065162
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