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Exercise

NULL and IS NULL

Now that you know what NULL is and what it's used for, it's time for some practice!

Instructions 1/3
undefined XP
  • 1

    Get the names of people who are still alive, i.e. whose death date is missing.

    • 2

      Get the title of every film which doesn't have a budget associated with it.

    • 3

      Get the number of films which don't have a language associated with them.

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