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Confio Ignite 8

Updating Statistics - Part 1

While most of us will leave auto update stats enabled, it's useful to be able to know how to update them manually as well. Learn how to use update statistics to make everyything current and good!

Duration:
3 mins 57 secs
Skill Level:
100
Rating:
4.49 out of 5
Publish Date:
December 04, 2009
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About the Author

Image of Andy Warren
Andy Warren is a software trainer focusing on SQL Server, a member of the PASS Board of Directors, and a principal in this site - SQLShare.com.

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Comments
Omair on 12/18/2009
Fair...no proper introduction, jumps right into topic, doesnt provide any example situations or overview. Useful information still.

Sandip on 12/21/2009
Excellent

SpeedRoush on 12/25/2009
i could kiss you LOL

BAB0DDB76E on 12/28/2009
A little bit of intro would be good, but very good info in 4min presentation. Thank you

Steve Harris on 12/28/2009
maybe have another video discussing how changing the statistics changes the decision of the optimizer and what to look for in the optimizer that would lead us to updaing the statistics

Paul on 12/28/2009
Quick overview of options to manually update statistics.

luther smith on 12/28/2009
Comprehensive information, little-used function.

Munna Bhai on 12/28/2009
Another great video...keep up the good work.

Venky Subramaniam on 12/28/2009
I would have but to concur with the majority (that I see has similar views in my opinion)... Despite the time limitations imposed (self, or driven by the sponsor), it makes it a worthwhile experience when the person viewing (and therefore trying to imbibe/learn) feels comfortable treading new waters! For example, with SQL Sever 2005 and later, rebuilding indexes is 'allegedly' covering the updates of statistics. How do we sequester these facts/representations and how does it help, say in, running reorganize followed by UPDATE STATISTICS on all tables. The purpose here seems to be lost! Whether it is at the per table level where one needs to tweak because of changes (?), or whether a script to access all the databases within the instance and taking care of updating statistics for each table concerned helps, would actually help in understanding the nuances from the experts in the field, as to when/what to do and the BIG IF... Enough said... Thanks for the brief video though...

Samrat on 1/1/2010
Please include information about what is DB statistics. Why is it helpful?

Mark Sopczak on 1/1/2010
Excellent, had no idea now to look at last stats time.

aks on 1/2/2010
Good information..

A Alagu Ganesh on 5/4/2010
good

Ravi Raj on 6/29/2010
exceelent one

subha on 7/3/2010
Could u please explain why we need to update statistic?

erick on 8/18/2010
cool!



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