Welcome to the Treehouse Community
The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.
cte vs join performance
Which method we should prefer while writing SQL queries, CTE or JOIN?
It depends on what you're wanting to do. In my day to day work I setup CTE's if I want to have a specific set of data that I can query from, otherwise I do a join.
I read somewhere that CTEs are loaded into RAM and can be faster than a join, but I've also read conflicting information in some forums.