Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

Databases

Jasper Peijer
Jasper Peijer
45,009 Points

Isn't it smarter to use GROUP BY TEACHERS.ID so you don't have to show the ID in the result?

Isn't it smarter to use GROUP BY TEACHERS.ID so you don't have to show the ID in the result?