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

Tyler McDonald
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Tyler McDonald
Full Stack JavaScript Techdegree Graduate 16,676 Points

More efficient way to solve "Movies with Any Missing Data"?

The solution for the Movies with Any missing data question would become extremely long if there were many columns:

-- Find all movies with any missing data

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

Is there a better way to solve this instead of listing each column?

1 Answer

Steven Parker
Steven Parker
217,570 Points

Since a primary key cannot be NULL, you can simplify this a bit by not testing the ID column.

Otherwise, if the database has a programming extension you could use that to write a function that uses table metadata to identify and test the columns, but that's not standard SQL (and way beyond the scope of this course).