question２です

【練習問題】 SQL/Question1/Questions1_中野.txt

@@ -0,0 +1,25 @@
+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', '冬目漱石', 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', '冬目漱石', 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 = '冬目漱石' AND price = 420;
+
+問7
+DELETE FROM book_table WHERE book_id = 20001;

【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%';