📄 part3.txt
字号:
1.
s-r:
D | E | F
---------
b | g | a
2.
( SELECT MemNo
FROM MEMBER, BOOK
WHERE MemNo = BorrowerMemNo AND
CallNumber = 'QA76.9.D26C66'
)
EXCEPT
( SELECT MemNo
FROM MEMBER, BOOK
WHERE MemNo = BorrowerMemNo AND
CallNumber = 'QA76.9.D7E53'
);
Returns a list of member numbers of all members currently borrowing the book that has only call number QA76.9.D26C66 but not call number QA76.9.D7E53.
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