問１
テーブル作成
 CREATE TABLE book_table (book_id INT, book_name VARCHAR(50), author_name VARCHAR(50), price INT, sales_flag INT);
問２
 INSERT INTO book_table VALUES (10001, 'TwoPeace', '三田英一郎', 420,1);
INSERT INTO book_table VALUES (10002, '名探偵金田二', '青山ふみや', 460,1);
INSERT INTO book_table VALUES (20001, '坊ちゃま', '冬目漱岩', 460,1);
INSERT INTO book_table VALUES (30001, '西方見聞録', '不明', 1000,1);
INSERT INTO book_table VALUES (40010, '吾輩は犬である', '冬目漱岩', 420,1);

問３
SELECT book_name , author_name FROM book_table;

問４
 UPDATE book_table SET sales_flag= 0 WHERE book_id =30001;

問５
SELECT * FROM book_table WHERE sales_flag LIKE '%1%';

問６
SELECT * FROM book_table WHERE author_name = '冬目漱岩' AND price = 420;
問７
 DELETE FROM book_table WHERE book_id = 20001;