question２です

【練習問題】 SQL/Question1/MySQL SQL問題集 part１.txt

@@ -1,96 +0,0 @@
-mysql> SELECT * FROM book2_table;
-Empty set (0.00 sec)
-
-
-mysql> INSERT INTO book2_table VALUES (10001,'TowPeace','三田英一郎', 420, 1);
-Query OK, 1 row affected (0.00 sec)
-
-mysql> INSERT INTO book2_table VALUES (10002,'名探偵金田二','青山ふみや', 460, 1);
-Query OK, 1 row affected (0.01 sec)
-
-mysql> INSERT INTO book2_table VALUES (20001,'坊ちゃま','冬目漱石', 460, 1);
-Query OK, 1 row affected (0.01 sec)
-
-mysql> INSERT INTO book2_table VALUES (30001,'西方見聞録','不明', 1000, 1);
-Query OK, 1 row affected (0.01 sec)
-
-mysql> INSERT INTO book2_table VALUES (40010,'吾輩は犬である','冬目漱石', 420, 1);
-Query OK, 1 row affected (0.01 sec)
-
-mysql> SELECT * FROM book2_table;
-+---------+----------------+-------------+-------+------------+
-| book_id | book_name      | author_name | price | sales_flag |
-+---------+----------------+-------------+-------+------------+
-|   10001 | TowPeace       | 三田英一郎  |   420 |          1 |
-|   10002 | 名探偵金田二   | 青山ふみや  |   460 |          1 |
-|   20001 | 坊ちゃま       | 冬目漱石    |   460 |          1 |
-|   30001 | 西方見聞録     | 不明        |  1000 |          1 |
-|   40010 | 吾輩は犬である | 冬目漱石    |   420 |          1 |
-+---------+----------------+-------------+-------+------------+
-5 rows in set (0.00 sec)
-
-mysql> SELECT book_name,author_name FROM book2_table;
-+----------------+-------------+
-| book_name      | author_name |
-+----------------+-------------+
-| TowPeace       | 三田英一郎  |
-| 名探偵金田二   | 青山ふみや  |
-| 坊ちゃま       | 冬目漱石    |
-| 西方見聞録     | 不明        |
-| 吾輩は犬である | 冬目漱石    |
-+----------------+-------------+
-5 rows in set (0.00 sec)
-
-
-mysql> UPDATE book2_table SET author_name = 'マール＝コー＝ポロ' WHERE book_id =30001;
-Query OK, 1 row affected (0.01 sec)
-Rows matched: 1  Changed: 1  Warnings: 0
-
-mysql> UPDATE book2_table SET sales_flag = 0 WHERE book_id =30001;
-Query OK, 1 row affected (0.00 sec)
-Rows matched: 1  Changed: 1  Warnings: 0
-
-mysql> SELECT * FROM book2_table;
-+---------+----------------+--------------------+-------+------------+
-| book_id | book_name      | author_name        | price | sales_flag |
-+---------+----------------+--------------------+-------+------------+
-|   10001 | TowPeace       | 三田英一郎         |   420 |          1 |
-|   10002 | 名探偵金田二   | 青山ふみや         |   460 |          1 |
-|   20001 | 坊ちゃま       | 冬目漱石           |   460 |          1 |
-|   30001 | 西方見聞録     | マール＝コー＝ポロ |  1000 |          0 |
-|   40010 | 吾輩は犬である | 冬目漱石           |   420 |          1 |
-+---------+----------------+--------------------+-------+------------+
-5 rows in set (0.00 sec)
-
-mysql> SELECT * FROM book2_table WHERE sales_flag = 1;
-+---------+----------------+-------------+-------+------------+
-| book_id | book_name      | author_name | price | sales_flag |
-+---------+----------------+-------------+-------+------------+
-|   10001 | TowPeace       | 三田英一郎  |   420 |          1 |
-|   10002 | 名探偵金田二   | 青山ふみや  |   460 |          1 |
-|   20001 | 坊ちゃま       | 冬目漱石    |   460 |          1 |
-|   40010 | 吾輩は犬である | 冬目漱石    |   420 |          1 |
-+---------+----------------+-------------+-------+------------+
-4 rows in set (0.00 sec)
-
-mysql> SELECT * FROM book2_table WHERE author_name ='冬目漱石' AND price =420;
-+---------+----------------+-------------+-------+------------+
-| book_id | book_name      | author_name | price | sales_flag |
-+---------+----------------+-------------+-------+------------+
-|   40010 | 吾輩は犬である | 冬目漱石    |   420 |          1 |
-+---------+----------------+-------------+-------+------------+
-1 row in set (0.00 sec)
-
-mysql> DELETE FROM book2_table WHERE book_id =20001;
-Query OK, 1 row affected (0.01 sec)
-
-mysql> SELECT * FROM book2_table;
-+---------+----------------+--------------------+-------+------------+
-| book_id | book_name      | author_name        | price | sales_flag |
-+---------+----------------+--------------------+-------+------------+
-|   10001 | TowPeace       | 三田英一郎         |   420 |          1 |
-|   10002 | 名探偵金田二   | 青山ふみや         |   460 |          1 |
-|   30001 | 西方見聞録     | マール＝コー＝ポロ |  1000 |          0 |
-|   40010 | 吾輩は犬である | 冬目漱石           |   420 |          1 |
-+---------+----------------+--------------------+-------+------------+
-4 rows in set (0.00 sec)

【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%';