📄 exercise2.sql
字号:
1.
SELECT t.name, t.year
FROM title t, author a
WHERE t.callnumber = a.callnumber AND a.lname = 'Churchill'
2.
SELECT DISTINCT t.name
FROM title t, book b, member m
WHERE b.borrowermemno = m.memno AND t.callnumber = b.callnumber AND (m.fname = 'John' OR m.fname = 'Susan')
3.
SELECT fname, lname, memno
FROM member
WHERE memno IN ((SELECT borrowermemno
FROM book
WHERE callnumber IN (SELECT callnumber
FROM title
WHERE name = 'Iliad'))
INTERSECT
(SELECT borrowermemno
FROM book
WHERE callnumber IN (SELECT callnumber
FROM title
WHERE name = 'Odyssey')));
4,
SELECT memno, fname, lname
FROM member
WHERE memno IN (SELECT borrowermemno
FROM book
WHERE NOT EXISTS (SELECT *
FROM author
WHERE lname = 'Collins' AND NOT EXISTS (SELECT *
FROM book
WHERE borrowermemno = member.memno AND callnumber = author.callnumber)));
5.
SELECT m.phonenumber
FROM member m, book b, title t, author a
WHERE m.memno = b.borrowermemno AND b.callnumber = t.callnumber AND t.callnumber = a.callnumber AND a.lname = 'Tanenbaum'
6.
SELECT m.fname, m.lname, m.memno, COUNT(*) AS numOfBook
FROM member m, book b
WHERE m.memno = b.borrowermemno
GROUP BY m.fname, m.lname, m.memno
HAVING COUNT(*) >= 3
ORDER BY COUNT(*) DESC
7.
SELECT DISTINCT m.*
FROM member m, book b
WHERE m.memno NOT IN (SELECT DISTINCT b1.borrowermemno
FROM book b1
WHERE borrowermemno IS NOT NULL )
8.
SELECT fname, memno
FROM member
WHERE phonenumber LIKE '412%' AND memno NOT IN(SELECT borrowermemno
FROM book b, title t
WHERE b.callnumber = t.callnumber AND t.name<>'Pitt Roads' AND borrowermemno IS NOT NULL)
ORDER BY fname
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -