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Index Seek on Non Clustered Index cost is very high (92%) how to reduce this ?


Index Seek on Non Clustered Index cost is very high (92%) how to reduce this ?

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kbhanu15
kbhanu15
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Hi ALl,

Please give your suggestions to resolve this problem.

Index Seek on Non Clustered Index cost is very high (92%) how to reduce this ?
GilaMonster
GilaMonster
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No way to answer with that limited information. Please at least post the execution plan.

First though, is that a problem? The costs have to add to 100% across the plan, so is that seek problematic? Is the query even problematic?

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


MadAdmin
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Add an unnecessary sort.
That should make the index seek use proportionately less cost of the entire query.
But, why would you want to?

Catch-all queries done right
Gail Shaw's Performance Blog
Jeff Moden
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kbhanu15 (7/14/2014)
Hi ALl,

Please give your suggestions to resolve this problem.

Index Seek on Non Clustered Index cost is very high (92%) how to reduce this ?


I've run into this in the past. Like Gail says, not enough information to call out a fix but, if it were me, I'd check the properties of the Index Seek in the execution plan and see how many times it's executing. If it's doing 1 seek per row instead of a single seek and a range scan, that could be one of the problems.

--Jeff Moden

RBAR is pronounced ree-bar and is a Modenism for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
Stop thinking about what you want to do to a row... think, instead, of what you want to do to a column.
If you think its expensive to hire a professional to do the job, wait until you hire an amateur. -- Red Adair

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