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  3. Introduction to Oracle SQL
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I want it all

Are there some eSymphony employees that are also customers of the company? Let's find out!

说明 1 / 共 2 个

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  • 1

    Write a query to get the first name and last name of all employees and customers.

  • 2

    Our query result contains 67 rows. Some employees may also be customers: modify your query to remove duplicates.