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+問１
+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 author_name = 'マール＝コ＝ポロ' WHERE book_id = 30001;
+UPDATE book_table SET sales_flag = 0 WHERE book_id = 30001;
+
+問５
+SELECT * FROM book_table WHERE sales_flag = 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;
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