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.
Where do you set whether a value can be NULL in this SQL Playground?
The example says that the Schema has been set so that all values with the exception of the return date, cannot be set to null.
Accessing the schema in the SQL DB, I see no settings for this or indication. Is it not visible because this is a virtual system set up for the purposes of the examples or am I missing something?