This advanced SQL exercise is part of the book: Advanced SQL – Practical Techniques and Use-Cases, which includes 100 day-to-day SQL challenges (and solutions), need-to-know advanced features, and key concepts.

The “Northern Wind” travel store manages a table that holds the addresses of its customers. As can be seen, each row indicates the state, city, and address of each customer.

CREATE TABLE customerLocations
(c_city varchar(25),
c_state varchar(25),
c_address varchar(50))

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