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.

Databases Modifying Data with SQL Adding Data to a Database Adding Data With SQL

DCI Seven
DCI Seven
827 Points

INSERT INTO with NULL

We have an eCommerce database and it has a products table. It has the columns id, name, description and price.

Add a new product to the products table. Use any valid values you want. All columns are required. The id column is auto incrementing.

Ive already re-watched the video many times, I seem to be perplex by this question, is auto incrementing usually involve NULL? I will attached again in the AM when my mind is fresh..

thanks

2 Answers

Steven Parker
Steven Parker
210,936 Points

You're quite right, the value for the auto-incrementing column can be NULL. You can also omit setting them entirely.

For a more specific answer, show the code line you were entering.

I don't understand either. I wrote:

INSERT INTO products VALUES (NULL, isabelle, gul, 19);

I got the message: "Bummer: Was expecting 4 entries in the products table. There's only 3."

Steven Parker
Steven Parker
210,936 Points

After seeing the actual code, the issue is now clear. It seems that two of the supplied values are literal strings, but they are not enclosed in quotes. Try this:

INSERT INTO products VALUES (NULL, 'isabelle', 'gul', 19);