1.没有被读者借阅的图书信息
SELECT `bName`,`bid`,`author`,`pubComp`,`price`
FROM book WHERE bid NOT IN (
SELECT nif FROM borrow
)
2.今年所有缴纳罚款的读者清单
SELECT reader.rName,book.bName,pDate,amount FROM penalty
INNER JOIN reader ON penalty.rid=reader.rid
INNER JOIN book ON penalty.bid=book.bid
WHERE YEAR(pDate)=YEAR(NOW())
3.地址为空的所有读者尚未归还的图书清单
SELECT reader.rid,reader.rName,book.bName,lendDate,willDate,returnDate FROM borrow
INNER JOIN reader ON borrow.rid=reader.rid
INNER JOIN book ON borrow.nif=book.bid
WHERE borrow.rid IN(
SELECT reader.rid FROM reader WHERE rAddress IS NULL
) AND returnDate IS NULL ORDER BY borrow.rid DESC,lendDate ASC