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SubQuery


SubQuery

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SQLRNNR
SQLRNNR
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palotaiarpad (9/19/2011)
Nice question! Thanks!


You're welcome



Jason AKA CirqueDeSQLeil
I have given a name to my pain...
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Posting Performance Based Questions - Gail Shaw

Revenant
Revenant
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Got it right, but it took me twenty minutes of head scratching.

Thanks!
Trey Staker
Trey Staker
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Thanks for the question. I got it right. I haven't used this functionality yet so I was guessing a little that this is how it works.

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Ken Wymore
Ken Wymore
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I, like some others, got the question right for the wrong reason. I focused on the date declaration in the parameters and only caught the renaming of the sub-query columns after I had chosen the correct answer. Interesting behavior in regards to aliasing this way. Thanks for the question, I learned something new today!
SQLRNNR
SQLRNNR
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Kenneth Wymore (9/19/2011)
I, like some others, got the question right for the wrong reason. I focused on the date declaration in the parameters and only caught the renaming of the sub-query columns after I had chosen the correct answer. Interesting behavior in regards to aliasing this way. Thanks for the question, I learned something new today!


Good to hear and glad you learned.



Jason AKA CirqueDeSQLeil
I have given a name to my pain...
MCM SQL Server, MVP


SQL RNNR

Posting Performance Based Questions - Gail Shaw

SQLRNNR
SQLRNNR
SSC Guru
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Trey Staker (9/19/2011)
Thanks for the question. I got it right. I haven't used this functionality yet so I was guessing a little that this is how it works.


Good guess;-)



Jason AKA CirqueDeSQLeil
I have given a name to my pain...
MCM SQL Server, MVP


SQL RNNR

Posting Performance Based Questions - Gail Shaw

Ken Wymore
Ken Wymore
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Any idea as to why they would allow this behavior in a join? Seems to me like it would actually introduce more confusion than convenience.
SQLRNNR
SQLRNNR
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Kenneth Wymore (9/19/2011)
Any idea as to why they would allow this behavior in a join? Seems to me like it would actually introduce more confusion than convenience.


I think they have to allow it due to the requirement that a subquery that is based on values instead of a query requires the same syntax.

Here's an article on that. http://jasonbrimhall.info/2011/08/31/bitwise-and-derived-table-revisited/



Jason AKA CirqueDeSQLeil
I have given a name to my pain...
MCM SQL Server, MVP


SQL RNNR

Posting Performance Based Questions - Gail Shaw

Ken Wymore
Ken Wymore
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Ah, Thanks Jason. I'll check that out.
Koen Verbeeck
Koen Verbeeck
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Nice question, thanks!


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