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question_db/Answers/Question1.txt
2026-10-27 17:21:55 +09:00

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--Q1
CREATE TABLE book_table (
book_id INT COMMENT '書籍ID',
book_name VARCHAR(50) COMMENT '書籍名',
author_name VARCHAR(50) COMMENT '著者',
price INT COMMENT '価格',
sales_flag INT COMMENT '販売有無'
);
--Q2
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);
--Q3
SELECT book_name, author_name FROM book_table;
--Q4
UPDATE book_table SET author_name = 'マール=コー=ポロ', sales_flag = 0 WHERE book_id = 30001;
SELECT * FROM book_table;
--Q5
SELECT * FROM book_table WHERE sales_flag = 1;
--Q6
SELECT * FROM book_table WHERE author_name = '冬目漱岩' AND price = 420;
--Q7
DELETE FROM book_table WHERE book_id = 20001;
SELECT * FROM book_table;