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APPLY - 2


APPLY - 2

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tilew-948340
tilew-948340
Ten Centuries
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Never heard of "Apply" before.
Nice to know that "The difference between join and APPLY operator becomes evident when you have a table-valued expression on the right side and you want this table-valued expression to be evaluated for each row from the left table expression"

Learn something again.
Thanks!
Dana Medley
Dana Medley
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Thanks for the great question.



Everything is awesome!
WayneS
WayneS
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Good question Ron.

If anyone wants to learn more about using the Apply operator, check out the "Using APPLY" links in my signature block for some great articles written by Paul White. He does an excellent job of walking you through it.

Wayne
Microsoft Certified Master: SQL Server 2008
Author - SQL Server T-SQL Recipes
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

Raghavendra Mudugal
Raghavendra Mudugal
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Simply nice one. :-)

ww; Raghu
--
The first and the hardest SQL statement I have wrote- "select * from customers" - and I was happy and felt smart.
Ken Wymore
Ken Wymore
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Nice question! Glad I had my coffee first!
Jim_K
Jim_K
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Coffee was a prerequisite in order for me to get this right.
carl.landry
carl.landry
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I just don't get what to do with this APPLY keyword.

The query can be redone using a LEFT OUTER JOIN, which results in the same output and the same plan.

Is APPLY easier to read for you? Are there cases where APPLY is the only way to go?
carl.landry
carl.landry
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Looks like I found an answer. The documentation shows an example where APPLY is used to provide an argument to a table-function that require a parameter. It looks like it can't be done with a JOIN.
SQLRNNR
SQLRNNR
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Thanks for the question.



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


SQL RNNR

Posting Performance Based Questions - Gail Shaw

demonfox
demonfox
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thanks for the question

~ demonfox
___________________________________________________________________
Wondering what I would do next , when I am done with this one Ermm
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