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 Modifying Data with SQL Adding Data to a Database Adding a Row to a Table

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?

1 Answer