Update sql in rails way

[chansuke]

I've updated the query in rails way.I am using verbose SQL for LEFT JOIN in joins query but you can use left_outer_joins from Rails5.
http://guides.rubyonrails.org/active_record_querying.html#left-outer-joins
http://blog.bigbinary.com/2016/03/24/support-for-left-outer-joins-in-rails-5.html

[ojde]

Nice! Thanks!

Being not very sophisticated it git(hub) yet, what do i have to do now? "Create a merge commit", "Squash and Merge", or "Rebase and Merge"? And, btw, what are the differences?

[chansuke]

@ojde Thanks ojde!!If the PR is ok,Create a merge commit is better:)
https://help.github.com/articles/about-pull-request-merges/

• Create a merge commit ⇒ Merge all of the commits into the base branch
• Squash and Merge ⇒ Squash the commits into a single commit
• Rebase and Merge ⇒ All commits from the topic branch (or head branch) are added onto the base branch individually without a merge commit

[ojde]

I wrote you an e-mail