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3. Exercise 1

## Instruction

Fine, let's get started!

## Exercise

Show the first, middle and last name of each person together, as one column, in the following way: Firstname Middlename LASTNAME (first name and middle name - first letter in uppercase, rest in lowercase; last name in uppercase). Name the column full_name

Show this information only for those people whose last_name is at least 7 characters long. Make sure to handle properly the people who have no middle name. Show an empty string instead of a NULL middle name.

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