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

@@ -1,28 +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);
-
-SELECT * FROM book_table;
-
-問3
-SELECT book_name,author_name FROM book_table;
-
-問4
-UPDATE book_table SET sales_flag =  0 WHERE book_id = 30001;
-
-問5
-SELECT book_id, book_name, author_name,price, sales_flag FROM book_table where sales_flag = 1;
-
-問6
-SELECT book_id, book_name, author_name,price, sales_flag FROM book_table where author_name = '冬目漱岩' AND price = 420;
-
-問7
-DELETE FROM book_table WHERE book_id = 20001;
-SELECT * FROM book_table;
-

【練習問題】 SQL/Question2/q2.txt

@@ -1,29 +0,0 @@
-問1
-CREATE TABLE item_category(category_id INT PRIMARY KEY AUTO_INCREMENT, category_name VARCHAR(256) NOT NULL);
-INSERT INTO item_category (category_name) VALUES(1,'家具');
-INSERT INTO item_category (category_name) VALUES('飲料');
-INSERT INTO item_category (category_name) VALUES('食品');
-
-問2
-CREATE TABLE item(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));
-
-問3
-SELECT item.category_id, item.item_id, item.name, item.price,item_category.category_name FROM item INNER JOIN item_category ON item.category_id = item_category.category_id;
-
-問4
-SELECT item.category_id, item.item_id, item.name, item.price,item_category.category_name FROM item INNER JOIN item_category ON item.category_id = item_category.category_id ORDER BY price ASC;
-
-問5
-SELECT item.category_id, item.item_id, item.name, item.price,item_category.category_name FROM item INNER JOIN item_category ON item.category_id = item_category.category_id WHERE category_name ='家具';
-
-問6
-SELECT item.category_id, item.item_id, item.name, item.price,item_category.category_name FROM item INNER JOIN item_category ON item.category_id = item_category.category_id WHERE item.price >= 1000 AND item.price <= 50000;
-
-問7
-SELECT COUNT(*) AS data_count FROM item;
-
-問8
-SELECT item.category_id, item.item_id, item.name, item.price,item_category.category_name FROM item INNER JOIN item_category ON item.category_id = item_category.category_id WHERE item.price = 150000;
-
-問9
-SELECT item.category_id, item.item_id, item.name, item.price,item_category.category_name FROM item INNER JOIN item_category ON item.category_id = item_category.category_id WHERE item.name LIKE '%の%'