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Discuss content posted by Dave Ballantyne
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Optimizing a cursor based routine – Part 1
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Optimizing a cursor based routine – Part 1
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Dave Ballantyne
Dave Ballantyne
Posted Monday, June 27, 2011 12:02 AM
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Comments posted to this topic are about the item
Optimizing a cursor based routine – Part 1
Clear Sky SQL
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Post #1131888
SQLRNNR
SQLRNNR
Posted Monday, June 27, 2011 4:27 PM
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Nice Job Dave.
Jason
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Post #1132549
Dave Ballantyne
Dave Ballantyne
Posted Tuesday, June 28, 2011 7:47 AM
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Thanks Jason,
It was a long hard slog to get it to this point.
Glad you enjoyed it
FYI : Part 2 is now active here
http://www.sqlservercentral.com/articles/T-SQL/73889/
Clear Sky SQL
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Post #1132893
KWymore
KWymore
Posted Tuesday, June 28, 2011 11:59 AM
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Nice article, well written, very informational, good explanations. I look forward to future articles from you.
Post #1133140
wbrianwhite
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Posted Tuesday, June 28, 2011 2:32 PM
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I'm not sure why you're keeping this in a cursor at all. The report looks simple enough to just write the entire report as a big select statement. Which will be an order of magnitude faster than a cursor.
Post #1133245
GilaMonster
GilaMonster
Posted Tuesday, June 28, 2011 2:44 PM
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For simplicity of example?
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Post #1133256
LutzM
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Posted Tuesday, June 28, 2011 3:06 PM
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Great article, Dave! Very well done!
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Post #1133279
WayneS
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Posted Tuesday, June 28, 2011 4:20 PM
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wbrianwhite (6/28/2011)
I'm not sure why you're keeping this in a cursor at all. The report looks simple enough to just write the entire report as a big select statement. Which will be an order of magnitude faster than a cursor.
Surely you did notice that this article is "Part 1"? I would suspect that "Part 2" takes care of that!
Wayne
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Post #1133320
WayneS
WayneS
Posted Tuesday, June 28, 2011 4:21 PM
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Excellent Dave. I really like the progression you take for resolving this.
Wayne
Microsoft Certified Master: SQL Server 2008
If you can't explain to another person how the code that you're copying from the internet works, then
DON'T USE IT
on a production system! After all,
you
will be the one supporting it!
Links:
For better assistance in answering your questions
,
How to ask a question
,
Performance Problems
,
Common date/time routines
,
CROSS-TABS and PIVOT tables Part 1
&
Part 2
,
Using APPLY Part 1
&
Part 2
,
Splitting Delimited Strings
Post #1133322
wbrianwhite
wbrianwhite
Posted Tuesday, June 28, 2011 6:14 PM
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WayneS (6/28/2011)
wbrianwhite (6/28/2011)
I'm not sure why you're keeping this in a cursor at all. The report looks simple enough to just write the entire report as a big select statement. Which will be an order of magnitude faster than a cursor.
Surely you did notice that this article is "Part 1"? I would suspect that "Part 2" takes care of that!
I just looked at it now that it's up. It uses a temp table and a lot of outer apply functions and multiple CTEs. It is a simple enough report to write as just a select. Anything else seems like the wrong tool. Keep it simple and describe what you want in your sql, not how to get it.
Post #1133346
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