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basicconfiguration
Constraint Violating Yak Guru

358 Posts

Posted - 2012-01-18 : 14:28:06
[url]http://imageshack.us/photo/my-images/39/clipboard01dm.jpg/[/url]

I will like to know what are those small horizontal black arrows inside the yellow circles are? I wanted to google it but i didn't know how to. thanks

ehorn
Master Smack Fu Yak Hacker

1632 Posts

Posted - 2012-01-18 : 14:49:25
IIRC, they indicate 'parallelism' is possible for those steps.

EDIT... See the following link:

http://www.sql-server-performance.com/2005/parallel-execution-plans/

HTH.
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GilaMonster
Master Smack Fu Yak Hacker

4507 Posts

Posted - 2012-01-18 : 14:57:54
They indicate that those operators are running in parallel.

--
Gail Shaw
SQL Server MVP
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basicconfiguration
Constraint Violating Yak Guru

358 Posts

Posted - 2012-01-20 : 15:07:37
I have 2 servers: prod and localhost (my local). Both running same sql server version and sp1 ...when run the same query on both servers and I look at the execution plan (control + L) the production one shows an extra icon called Parallelism. Anyone knows why?
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GilaMonster
Master Smack Fu Yak Hacker

4507 Posts

Posted - 2012-01-20 : 15:28:31
Because the production one is running in parallel (over multiple CPU cores) and the local one is not. Do you have more than one CPU core in your local machine? If so, is SQL allowed to use more than one (and is it SQL Express)?

--
Gail Shaw
SQL Server MVP
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