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 how to tune select query in 2008

Author  Topic 

nitin1111
Starting Member

13 Posts

Posted - 2010-04-06 : 07:14:04
Hi,

how to tune select query in 2008

I have got select query to tune.

I used sql profiler to create trace file and used database engine tunning advisor to get recommandation for trace files. but I did not get any recommandation.users are complaining about slow response time.pls help me how to solve this issue.





M.N.Dani

visakh16
Very Important crosS Applying yaK Herder

52326 Posts

Posted - 2010-04-06 : 07:22:30
whats the query doing? do you have proper indexes which can be used by query? did you try analysing execution plan/

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SQL Server MVP
http://visakhm.blogspot.com/

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Transact Charlie
Master Smack Fu Yak Hacker

3451 Posts

Posted - 2010-04-06 : 07:29:17
post the query.

If you've used any wrapper functions (ISNULL, DATEDIFF, etc) then you'll be unable to make use of any potentially helpful index.


Charlie
===============================================================
Msg 3903, Level 16, State 1, Line 1736
The ROLLBACK TRANSACTION request has no corresponding BEGIN TRANSACTION
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nitin1111
Starting Member

13 Posts

Posted - 2010-04-06 : 08:21:46
Thanks..


I have got execution plan... But not able to analyze ..
please help me how to start with analization.

M.N.Dani
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Transact Charlie
Master Smack Fu Yak Hacker

3451 Posts

Posted - 2010-04-06 : 08:34:51
psot the query and the plan.

You should look for:

table / index scans
key lookups
Wrapper functions
Missing index

before considering any more esoteric things.


Charlie
===============================================================
Msg 3903, Level 16, State 1, Line 1736
The ROLLBACK TRANSACTION request has no corresponding BEGIN TRANSACTION
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