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Cross Apply in Sql


Cross Apply in Sql

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Azzu
Azzu
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Hi

I have a very small question -- What is the difference between Cross Apply and Inner Join.
what is it that can be achieved using Cross Apply that cannot be using Inner Join.

Thanks in Advance.

Azeem.
ColdCoffee
ColdCoffee
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Azzu, here are some links describing APPLY clause ; all the qustions you asked is explained in detail in the link ; i had given the link to the first part, the link to the second part is in the first part itself:


Link : Understanding and Using APPLY (Part 1) - Paul White

I tell you, this is by far the **BEST** article on APPLY i had ever read.. Thanks to Paul White for writing that up :-)
Paul White
Paul White
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Thanks for the recommendation Cold Coffee Cool

Azeem, if you have any questions after reading both parts of the article and examining the code samples provided there, please post them here and one of us will try to answer.

Paul



Paul White
SQLPerformance.com
SQLblog.com
@SQL_Kiwi
mpochaw
mpochaw
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Thank you for the link. I learned something new and very useful.
Alan Burstein
Alan Burstein
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I also love Paul's articles on APPLY and would second that suggestion. If you own or have access to Microsoft SQL Server 2012 High-Performance T-SQL functions by Itzek Ben-Gen there is a great section called "Improved Parallelism with APPLY". It's a just a few pages of some very valuable information.

-- Alan Burstein


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