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Query performance


Query performance

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PSB
PSB
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Hi,

When I add the below line of code to my stored procedure, the performance becoems very poor. Is there any other way I can do i ?

AND CustNum = CASE WHEN ISNULL(@CustNum,0) = 0 THEN CustNum ELSE @CustNum END

Thanks,
PSB
Sean Lange
Sean Lange
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PSB (7/19/2013)

Hi,

When I add the below line of code to my stored procedure, the performance becoems very poor. Is there any other way I can do i ?

AND CustNum = CASE WHEN ISNULL(@CustNum,0) = 0 THEN CustNum ELSE @CustNum END

Thanks,
PSB


There is always another way to do something. However, from what you posted I doubt anybody can give you much solid advice. All we have is a portion of what appears to be a where clause. This has the appearance of a catch all type query.

Check out this article that explains the issue you are seeing here. http://sqlinthewild.co.za/index.php/2009/03/19/catch-all-queries/

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kapil_kk
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the information that you have provided here is not that much and we cant able to give you proper solution...
please provide some more details...

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To get quick answer follow this link:
http://www.sqlservercentral.com/articles/Best+Practices/61537/
Jeff Moden
Jeff Moden
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Still and considering the very common configuration of the WHERE clause the OP gave, the methods in the "Catch All Query" article that Sean posted will probably fit the bill.

--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.
Although they tell us that they want it real bad, our primary goal is to ensure that we dont actually give it to them that way.
Although change is inevitable, change for the better is not.
Just because you can do something in PowerShell, doesnt mean you should. Wink

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