MySQL SQL問題集 part１完了しました。

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

@@ -0,0 +1,96 @@
+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/Q1.txt

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

【練習問題】 SQL/Question2/Q2+α.txt

@@ -1,3 +0,0 @@
-問１
-SELECT items.商品ID,items.商品名,items.価格,item_category.カテゴリ名 FROM items INNER JOIN item_category ON items.category_id = item_category.category_id ORDER BY 商品ID ASC;
-

【練習問題】 SQL/Question2/Q2.txt

@@ -1,29 +0,0 @@
-問１
-CREATE TABLE item_category(category_id INT AUTO_INCREMENT PRIMARY KEY,category_name VARCHAR(256) NOT NULL);
-INSERT INTO item_category(category_name)VALUES('家具')('飲料'),('食品');
-
-問２
-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));
-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);
-
-問３
-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;
-
-問４
-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;
-
-問５
-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';
-
-問６
-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;
-
-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 FROM items INNER JOIN item_category ON items.category_id = item_category.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 FROM items INNER JOIN item_category ON items.category_id = item_category.category_id WHERE name LIKE '%の%';
-