30 lines
1.9 KiB
Plaintext
30 lines
1.9 KiB
Plaintext
問１
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CREATE TABLE item_category(category_id INT AUTO_INCREMENT PRIMARY KEY,category_name VARCHAR(256) NOT NULL);
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INSERT INTO item_category(category_name)VALUES('家具')('飲料'),('食品');
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問２
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CREATE TABLE items(item_id INT PRIMARY KEY AUTO_INCREMENT,name VARCHAR(256) NOT NULL,price INT NOT NULL,category_id INT, FOREIGN KEY(category_id)REFERENCES item_category(category_id));
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INSERT INTO items(name,price,category_id) VALUE('ローマのテーブル',150000,1),('げーたるーど2000 500ml',370,2),('原始肉',2500,3),('魅惑の椅子',100000,1);
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問３
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SELECT item_category.category_id,items.item_id,items.name,items.price,item_category.category_name FROM items INNER JOIN item_category ON items.category_id = item_category.category_id;
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問４
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SELECT item_category.category_id,items.item_id,items.name,items.price,item_category.category_name FROM items INNER JOIN item_category ON items.category_id = item_category.category_id ORDER BY price ASC;
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問５
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SELECT item_category.category_id,items.item_id,items.name,items.price,item_category.category_name FROM items INNER JOIN item_category ON items.category_id = item_category.category_id WHERE category_name='家具';
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問６
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SELECT item_category.category_id,items.item_id,items.name,items.price,item_category.category_name FROM items INNER JOIN item_category ON items.category_id = item_category.category_id WHERE price BETWEEN 1000 AND 50000;
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問７
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SELECT COUNT(*) AS data_count FROM items;
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問８
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SELECT item_category.category_id,items.item_id,items.name,items.price,item_category.category_name FROM items INNER JOIN item_category ON items.category_id = item_category.category_id WHERE price = (SELECT MAX(price) FROM items);
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問９
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SELECT item_category.category_id,items.item_id,items.name,items.price,item_category.category_name FROM items INNER JOIN item_category ON items.category_id = item_category.category_id WHERE name LIKE '%の%';
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