试题一:
试题二:
试题三
试题四
试题五
试题六
试题七
试题八
试题九
试题十
答疑:【参考答案】
(1)SELECT LOANS.借书证号,姓名,系名,COUNT() AS 借书数量
FROM BORROWER,LOANS
WHERE BORROWER.借书证号=LOANS.借书证号
GROUP BY LOANS.借书证号
HAVING COUNT()>=5;
(2)SELECT 姓名,系名,书名,借书日期
FROM BORROWER,LOANS , BOOKS
WHERE
BORROWER.借书证号=LOANS.借书证号 AND LOANS.图书馆登记号=BOOKS.图书登记号
AND 索书号 IN
(
SELECT 索书号 FROM BORROWER,LOANS,BOOKS
WHERE BORROW.借书证号=LOANS.借书证号
AND LOANS.图书馆登记号=BOOKS.图书登记号
AND 姓名=“王丽”
)