Question

Write a query to display author ID, author first, last name, and the number of subjects (book subject count) for authors who have published books in more than one subject area (book subject).

CHECKOUT PATRON PK Pat ID FK1 Book Num FK2 Pat ID Check Out Date Check Due Date Check In Date Pat FName Pat LName Pat Type BO

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rom AUTHOR a Select count (dautndt b. Botk Subject from WRITES, Bopk b whete b , Book ~ Num 는 to-Book-Num

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