Database: book_1
Question: What are the titles of books that the client Peter Doe ordered, but the client James Smith did not?
SQL:
SELECT T4.title FROM Orders AS T1 JOIN Books_Order AS T2 ON T1.idOrder  =  T2.idOrder JOIN Client AS T3 ON T1.idClient  =  T3.idClient JOIN book AS T4 ON T2.ISBN  =  T4.isbn WHERE T3.name  =  "Peter Doe" EXCEPT SELECT T4.title FROM Orders AS T1 JOIN Books_Order AS T2 ON T1.idOrder  =  T2.idOrder JOIN Client AS T3 ON T1.idClient  =  T3.idClient JOIN book AS T4 ON T2.ISBN  =  T4.isbn WHERE T3.name  =  "James Smith"