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Databases SQL Basics Finding the Data You Want Review & Practice with SQL Playgrounds

Posted by Alex Moon
Alex Moon
1,888 Points

Picking all the data that is null

Find all movies with any missing data.

I put SELECT * FROM movies WHERE id OR genre OR year_released OR title IS NOT NULL; but I get data that doesn't necessarily has NULL values as well.

2 Answers

Jennifer Nordell
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STAFF
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Jennifer Nordell
Treehouse Teacher
Jennifer Nordell
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Jennifer Nordell
Treehouse Teacher

Hi there, Alex Moon! According to the code that you posted above you're picking thing where the title is NOT NULL. You'll want to pick things where something IS NULL :smiley:

Also, you will need to specify each thing that could potentially be NULL. Here was my solution:

SELECT * FROM movies WHERE title IS NULL OR year_released IS NULL OR genre IS NULL;

Hope this helps! :sparkles:

Rusu Mihail
Rusu Mihail
2,351 Points

Jennifer Nordell you are a lifesaver! Thanks!

Tashan Duncan
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Tashan Duncan
Front End Web Development Techdegree Graduate 17,799 Points
Tashan Duncan
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Tashan Duncan
Front End Web Development Techdegree Graduate 17,799 Points

I'm curious how you would go about doing this if there were many columns.

I tried 

SELECT * FROM movies Where * is NULL

And got the Error "Error: near "*": syntax error"