56 lines
2.3 KiB
Plaintext
56 lines
2.3 KiB
Plaintext
--Q1
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CREATE TABLE item_category (
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category_id INT AUTO_INCREMENT COMMENT 'カテゴリID',
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category_name VARCHAR(256) NOT NULL COMMENT 'カテゴリ名',
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PRIMARY KEY (category_id)
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)
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INSERT INTO item_category (category_name) VALUES ('家具');
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INSERT INTO item_category (category_name) VALUES ('飲料');
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INSERT INTO item_category (category_name) VALUES ('食品');
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--Q2
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CREATE TABLE items (
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item_id INT AUTO_INCREMENT COMMENT 'アイテムID',
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name VARCHAR(256) NOT NULL COMMENT 'アイテム名',
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price INT NOT NULL COMMENT '価格',
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category_id INT COMMENT 'カテゴリID',
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PRIMARY KEY (item_id),
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FOREIGN KEY (category_id) REFERENCES item_category(category_id)
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)
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INSERT INTO items (name, price, category_id) VALUES ('ローマのテーブル', 150000, 1);
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INSERT INTO items (name, price, category_id) VALUES ('げーたるーど2000 500ml', 370, 2);
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INSERT INTO items (name, price, category_id) VALUES ('原始肉', 2500, 3);
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INSERT INTO items (name, price, category_id) VALUES ('魅惑の椅子', 100000, 1);
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--Q3
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SELECT items.category_id, items.item_id, items.name, items.price, item_category.category_name
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FROM items INNER JOIN item_category ON items.category_id = item_category.category_id;
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--Q4
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SELECT items.category_id, items.item_id, items.name, items.price, item_category.category_name
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FROM items INNER JOIN item_category ON items.category_id = item_category.category_id
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ORDER BY price ASC;
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--Q5
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SELECT items.category_id, items.item_id, items.name, items.price, item_category.category_name
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FROM items INNER JOIN item_category ON items.category_id = item_category.category_id
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WHERE category_name = '家具';
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--Q6
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SELECT items.category_id, items.item_id, items.name, items.price, item_category.category_name
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FROM items INNER JOIN item_category ON items.category_id = item_category.category_id
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WHERE price BETWEEN 1000 AND 50000;
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--Q7
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SELECT COUNT(item_id) AS data_count FROM items;
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--Q8
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SELECT items.category_id, items.item_id, items.name, items.price, item_category.category_name
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FROM items INNER JOIN item_category ON items.category_id = item_category.category_id
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WHERE items.price >= ALL (SELECT items.price FROM items);
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--Q9
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SELECT items.category_id, items.item_id, items.name, items.price, item_category.category_name
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FROM items INNER JOIN item_category ON items.category_id = item_category.category_id
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WHERE items.name LIKE '%の%';
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