Slow Stored Procedure run time

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Slow Stored Procedure run time

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ChrisM@Work SSC Guru Points: 186127 More actions · Answer 1

Chuck, run a search (on this forum) on parameter sniffing. If this is the problem, which seems likely, then the solution can be pretty straightforward.

Cheers

ChrisM

^{“Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - Gail Shaw}

For fast, accurate and documented assistance in answering your questions, please read this article.
Understanding and using APPLY, (I) and (II) Paul White
Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden

Chuck Craig-199542 SSC-Addicted Points: 440 More actions · Answer 2

Chuck Craig-199542

SSC-Addicted

Points: 440

February 4, 2009 at 8:43 am

#938021

I'm on it and thanks!

Cheers

Chuck

Lowell SSC Guru Points: 323741 More actions · Answer 3

yep same issue as the post here:http://www.sqlservercentral.com/Forums/Topic649831-8-1.aspx

i put a decent explanation and fixes there.

Lowell

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ChrisM@Work SSC Guru Points: 186127 More actions · Answer 4

Lowell (2/4/2009)
yep same issue as the post here:http://www.sqlservercentral.com/Forums/Topic649831-8-1.aspx
i put a decent explanation and fixes there.

Top work Trinny, I was just about to post this one in.

^{“Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - Gail Shaw}

For fast, accurate and documented assistance in answering your questions, please read this article.
Understanding and using APPLY, (I) and (II) Paul White
Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden

Chuck Craig-199542 SSC-Addicted Points: 440 More actions · Answer 5

Thank you all,

I've got it down to 13 seconds as it works through about 40M rows of data.

I placed new variables inline and assigned the passed parms to them.

The DBA's are also looking into wether statistics are correctly being updated.

But I'm thrilled!

Cheers

Chuck