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Exercise

SELECT DISTINCT

Often your results will include many duplicate values. If you want to select all the unique values from a column, you can use the DISTINCT keyword.

This might be useful if, for example, you're interested in knowing which languages are represented in the films table:

SELECT DISTINCT language
FROM films;

Remember, you can check out the data in the tables by clicking on the table name!

Instructions 1/3

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  • 1

    Get all the unique countries represented in the films table.

  • 2

    Get all the different film certifications from the films table.

  • 3

    Get the different types of film roles from the roles table.