Query performance

• PSB

  SSChampion

  Points: 13195

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  July 19, 2013 at 1:13 pm

  #276133

  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

  SSC Guru

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  July 19, 2013 at 1:21 pm

  #1634167

  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/[/url]

  _______________________________________________________________

  Need help? Help us help you.

  Read the article at http://www.sqlservercentral.com/articles/Best+Practices/61537/ for best practices on asking questions.

  Need to split a string? Try Jeff Modens splitter http://www.sqlservercentral.com/articles/Tally+Table/72993/.

  Cross Tabs and Pivots, Part 1 – Converting Rows to Columns - http://www.sqlservercentral.com/articles/T-SQL/63681/
  Cross Tabs and Pivots, Part 2 - Dynamic Cross Tabs - http://www.sqlservercentral.com/articles/Crosstab/65048/
  Understanding and Using APPLY (Part 1) - http://www.sqlservercentral.com/articles/APPLY/69953/
  Understanding and Using APPLY (Part 2) - http://www.sqlservercentral.com/articles/APPLY/69954/

• kapil_kk

  SSC-Insane

  Points: 21316

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  July 20, 2013 at 3:58 am

  #1634246

  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...

  _______________________________________________________________
  To get quick answer follow this link:
  http://www.sqlservercentral.com/articles/Best+Practices/61537/

• Jeff Moden

  SSC Guru

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  July 20, 2013 at 4:42 pm

  #1634278

  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.

  Change is inevitable... Change for the better is not.
  

  ---

  Helpful Links:
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