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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?
Steven Parker228,978 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).