# Why :include?

**URL:** <https://www.ruby-forum.com/t/why-include/148030>\
**Category:** Ruby\
**Created:** [September 8, 2008, 2:31pm UTC](https://www.ruby-forum.com/t/why-include/148030 "2008-09-08T14:31:49Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ganeshk](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/7cd45c/32.png) [@ganeshk](https://www.ruby-forum.com/u/ganeshk)\
**Post date:** [September 8, 2008, 2:31pm UTC](https://www.ruby-forum.com/t/why-include/148030/1 "2008-09-08T14:31:49Z")

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Hi,  
What is the use of :include in finding the results…

for eg: c = Student.find(12,:include=\>:department)  
if anybody knows the solution plz reply

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**Author:** ![ganeshk](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/7cd45c/32.png) [@ganeshk](https://www.ruby-forum.com/u/ganeshk)\
**Post date:** [September 8, 2008, 2:54pm UTC](https://www.ruby-forum.com/t/why-include/148030/2 "2008-09-08T14:54:49Z")

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:include is used to specify join tables in the query.

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**Author:** ![ganeshk](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/g/7cd45c/32.png) [@ganeshk](https://www.ruby-forum.com/u/ganeshk)\
**Post date:** [September 8, 2008, 2:59pm UTC](https://www.ruby-forum.com/t/why-include/148030/3 "2008-09-08T14:59:48Z")

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Bryan R. wrote:

> :include is used to specify join tables in the query.

Thank you sir