diff --git a/【練習問題】 SQL/Question2/Questions2_中野.txt b/【練習問題】 SQL/Question2/Questions2_中野.txt new file mode 100644 index 0000000..f297c2d --- /dev/null +++ b/【練習問題】 SQL/Question2/Questions2_中野.txt @@ -0,0 +1,37 @@ +問1 +CREATE TABLE item_category(category_id INT AUTO_INCREMENT, category_name VARCHAR(256) NOT NULL, PRIMARY KEY (category_id)); + +INSERT INTO item_category (category_name) VALUES ('家具'); +INSERT INTO item_category (category_name) VALUES ('飲料'); +INSERT INTO item_category (category_name) VALUES ('食品'); + +問2 +CREATE TABLE items(item_id INT AUTO_INCREMENT, name VARCHAR(256) NOT NULL, price INT NOT NULL, category_id INT, PRIMARY KEY (item_id)); + +ALTER TABLE items ADD FOREIGN KEY(category_id) REFERENCES item_category(category_id); + +INSERT INTO items(name, price, category_id) VALUES('ローマのテーブル', 150000, 1); +INSERT INTO items(name, price, category_id) VALUES('げーたるーど2000 500ml', 370, 2); +INSERT INTO items(name, price, category_id) VALUES('原子肉', 2500, 3); +INSERT INTO items(name, price, category_id) VALUES('魅惑の椅子', 100000, 1); + +問3 +SELECT item_category.category_id, items.item_id, items.name,items.price, item_category.category_name AS name FROM item_category INNER JOIN items ON item_category.category_id = items.category_id; + +問4 +SELECT item_category.category_id, items.item_id, items.name,items.price, item_category.category_name AS name FROM item_category INNER JOIN items ON item_category.category_id = items.category_id ORDER BY items.price ASC; + +問5 +SELECT item_category.category_id, items.item_id, items.name,items.price, item_category.category_name AS name FROM item_category INNER JOIN items ON item_category.category_id = items.category_id WHERE item_category.category_name = '家具'; + +問6 +SELECT item_category.category_id, items.item_id, items.name,items.price, item_category.category_name AS name FROM item_category INNER JOIN items ON item_category.category_id = items.category_id WHERE price >= 1000 AND price <= 50000; + +問7 +SELECT COUNT(*) AS data_count FROM items; + +問8 +SELECT item_category.category_id, items.item_id, items.name,items.price, item_category.category_name AS name FROM item_category INNER JOIN items ON item_category.category_id = items.category_id WHERE price = (SELECT MAX(price) FROM items); + +問9 +SELECT item_category.category_id, items.item_id, items.name,items.price, item_category.category_name AS name FROM item_category INNER JOIN items ON item_category.category_id = items.category_id WHERE name LIKE '%の%'; \ No newline at end of file