SQL Constraints

What you get?

Fully interactive online courses. Just you, SQL, Python, R and the web browser.

Instant access to lessons. You decide when and how long you want to learn.

Hundreds of SQL, Python, R exercises to master Your skills.

Course completion certificate to show the world that you really can!

Deals Of The Week - hours only!Up to 80% off on all courses and bundles.-Close

You did great! Now you know how to make sure that a column in a database has a value.

Now you'll learn how to control the values in the column. We present you a CHECK constraint!

Next exercise

9/9 Congratulations

1. Welcome

2. NOT NULL recap – defining a column as NOT NULL

3. NOT NULL recap – trying to add a NULL value

4. Adding NOT NULL to existing tables

5. Removing NOT NULL from existing tables

6. Adding and removing NOT NULL – exercise

7. Summary

8. Question

9. Congratulations

Excellent! That was the last exercise in this part. Congratulations!

In the next part, we'll talk about a new constraint type: CHECK. See you there!

Click Next exercise to finish this part.

Our website uses cookies. By using this website, you agree to their use in accordance with the browser settings.You can modify your browser settings on your own. For more information see our Privacy Policy.

Instruction

Exercise

Need assistance?

login:
password:
Remember me on this computer

Recipient's Name:
Recipient's Email:
Your Message (Optional):

Create a free accountand start learning now!

What you get?

Sign upand join a company account!

Log in

Your registration has been successfully finished

Wrap course as a gift

Great job!

Instruction

Exercise

Need assistance?