MySQL SQL練習問題20261027

DATABASE_Q1_hirayama;.txt

@@ -1,204 +0,0 @@
-mysql> CREATE DATABASE Q1;
-Query OK, 1 row affected (0.01 sec)
-
-mysql> SHOW DATABASEs;
-+--------------------+
-| Database           |
-+--------------------+
-| information_schema |
-| mysql              |
-| performance_schema |
-| q1                 |
-| rezodb             |
-| sys                |
-+--------------------+
-6 rows in set (0.00 sec)
-
-mysql> CREATE USER 'rezouser'@'localhost' IDENTIFIED BY 'Rezo_0000';
-ERROR 1396 (HY000): Operation CREATE USER failed for 'rezouser'@'localhost'
-mysql> USE Q1;
-Database changed
-mysql> SHOW DATABASEs;
-+--------------------+
-| Database           |
-+--------------------+
-| information_schema |
-| mysql              |
-| performance_schema |
-| q1                 |
-| rezodb             |
-| sys                |
-+--------------------+
-6 rows in set (0.01 sec)
-
-mysql> CREATE TABLE book_table(book_id INT, book_name VARCHAR(50), author_name VARCHAR(50), price INT, sales_flag INT);
-Query OK, 0 rows affected (0.03 sec)
-
-mysql> SELECT * FROM q1;
-ERROR 1146 (42S02): Table 'q1.q1' doesn't exist
-mysql> SHOW tables;
-+--------------+
-| Tables_in_q1 |
-+--------------+
-| book_table   |
-+--------------+
-1 row in set (0.00 sec)
-
-mysql> users;
-ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'users' at line 1
-mysql> DESCRIBE users;
-ERROR 1146 (42S02): Table 'q1.users' doesn't exist
-mysql> DESCRIBE book_table;
-+-------------+-------------+------+-----+---------+-------+
-| Field       | Type        | Null | Key | Default | Extra |
-+-------------+-------------+------+-----+---------+-------+
-| book_id     | int         | YES  |     | NULL    |       |
-| book_name   | varchar(50) | YES  |     | NULL    |       |
-| author_name | varchar(50) | YES  |     | NULL    |       |
-| price       | int         | YES  |     | NULL    |       |
-| sales_flag  | int         | YES  |     | NULL    |       |
-+-------------+-------------+------+-----+---------+-------+
-5 rows in set (0.01 sec)
-
-mysql> SELECT * FROM book_table;
-Empty set (0.00 sec)
-
-mysql> INSERT INTO book_table VALUES (10001, 'TwoPeace', '三田英一郎',　420, 1);
-ERROR 1054 (42S22): Unknown column '　420' in 'field list'
-mysql> INSERT INTO book_table VALUES (10001, 'TwoPeace', '三田英一郎', 420, 1);
-Query OK, 1 row affected (0.00 sec)
-
-mysql> SHOW tables;
-+--------------+
-| Tables_in_q1 |
-+--------------+
-| book_table   |
-+--------------+
-1 row in set (0.00 sec)
-
-mysql> SHOW book_table;
-ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'book_table' at line 1
-mysql> SELECT * FROM book_table;
-+---------+-----------+-------------+-------+------------+
-| book_id | book_name | author_name | price | sales_flag |
-+---------+-----------+-------------+-------+------------+
-|   10001 | TwoPeace  | 三田英一郎  |   420 |          1 |
-+---------+-----------+-------------+-------+------------+
-1 row in set (0.00 sec)
-
-mysql> INSERT INTO book_table VALUES (10002, '名探偵金田二', '青山ふみや', 460, 1);
-Query OK, 1 row affected (0.00 sec)
-
-mysql> INSERT INTO book_table VALUES (20001, '坊ちゃま', '冬目漱岩', 460, 1);
-Query OK, 1 row affected (0.01 sec)
-
-mysql> INSERT INTO book_table VALUES (30001, '西方見聞録', '不明', 1000, 1);
-Query OK, 1 row affected (0.01 sec)
-
-mysql> INSERT INTO book_table VALUES (40010, '吾輩は犬である', '冬目漱岩', 420, 1);
-Query OK, 1 row affected (0.00 sec)
-
-mysql> SELECT * FROM book_table;
-+---------+----------------+-------------+-------+------------+
-| book_id | book_name      | author_name | price | sales_flag |
-+---------+----------------+-------------+-------+------------+
-|   10001 | TwoPeace       | 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       | 冬目漱岩    |   460 |          1 |
-|   30001 | 西方見聞録     | 不明        |  1000 |          1 |
-|   40010 | 吾輩は犬である | 冬目漱岩    |   420 |          1 |
-+---------+----------------+-------------+-------+------------+
-5 rows in set (0.00 sec)
-
-mysql> SELECT * FLOM book_table WHERE book_name and author_name;
-ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FLOM book_table WHERE book_name and author_name' at line 1
-mysql> SELECT * FLOM book_table WHERE book_name AND author_name;
-ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FLOM book_table WHERE book_name AND author_name' at line 1
-mysql> SELECT * FLOM book_table WHERE book_name AND author_name;
-ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FLOM book_table WHERE book_name AND author_name' at line 1
-mysql> SELECT book_id,author_name;
-ERROR 1054 (42S22): Unknown column 'book_id' in 'field list'
-mysql> SELECT * FLOM 'book_table' WHERE CONCAT(book_name, author_name);
-ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'FLOM 'book_table' WHERE CONCAT(book_name, author_name)' at line 1
-mysql> SELECT book_name, author_name FROM book_table;
-+----------------+-------------+
-| book_name      | author_name |
-+----------------+-------------+
-| TwoPeace       | 三田英一郎  |
-| 名探偵金田二   | 青山ふみや  |
-| 坊ちゃま       | 冬目漱岩    |
-| 西方見聞録     | 不明        |
-| 吾輩は犬である | 冬目漱岩    |
-+----------------+-------------+
-5 rows in set (0.00 sec)
-
-mysql> UPDATE book_table set book_id = 30001 set author_name = 'マール＝コー＝ポロ' set sales_flag = 0 WHERE book_name = '西方見聞録';
-ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'set author_name = 'マール＝コー＝ポロ' set sales_flag = 0 WHERE book_na' at line 1
-mysql> UPDATE book_table set book_id = 30001, author_name = 'マール＝コー＝ポロ', sales_flag = 0 WHERE book_name = '西方見聞録';
-Query OK, 1 row affected (0.01 sec)
-Rows matched: 1  Changed: 1  Warnings: 0
-
-mysql> SELECT * FROM book_table;
-+---------+----------------+--------------------+-------+------------+
-| book_id | book_name      | author_name        | price | sales_flag |
-+---------+----------------+--------------------+-------+------------+
-|   10001 | TwoPeace       | 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       | 冬目漱岩           |   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 | 冬目漱岩           |   420 |          1 |
-+---------+----------------+--------------------+-------+------------+
-5 rows in set (0.00 sec)
-
-mysql> SELECT * FROM book_table WHERE sales_flag = 1;
-+---------+----------------+-------------+-------+------------+
-| book_id | book_name      | author_name | price | sales_flag |
-+---------+----------------+-------------+-------+------------+
-|   10001 | TwoPeace       | 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       | 冬目漱岩    |   460 |          1 |
-|   40010 | 吾輩は犬である | 冬目漱岩    |   420 |          1 |
-+---------+----------------+-------------+-------+------------+
-4 rows in set (0.00 sec)
-
-mysql> SELECT * FROM book_table WHERE book_name = '冬目漱岩' AND price = 420;
-Empty set (0.00 sec)
-
-mysql> SELECT * FROM book_table;
-+---------+----------------+--------------------+-------+------------+
-| book_id | book_name      | author_name        | price | sales_flag |
-+---------+----------------+--------------------+-------+------------+
-|   10001 | TwoPeace       | 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       | 冬目漱岩           |   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 | 冬目漱岩           |   420 |          1 |
-+---------+----------------+--------------------+-------+------------+
-5 rows in set (0.00 sec)
-
-mysql> SELECT * FROM book_table WHERE book_name = '冬目漱岩' AND price = 420;
-Empty set (0.00 sec)
-
-mysql> SELECT book_table WHERE book_name = '冬目漱岩' AND price = 420;
-ERROR 1054 (42S22): Unknown column 'book_table' in 'field list'
-mysql> SELECT * FROM book_table WHERE author_name = '冬目漱岩' AND price = 420;
-+---------+----------------+-------------+-------+------------+
-| book_id | book_name      | author_name | price | sales_flag |
-+---------+----------------+-------------+-------+------------+
-|   40010 | 吾輩は犬である | 冬目漱岩    |   420 |          1 |
-+---------+----------------+-------------+-------+------------+
-1 row in set (0.00 sec)
-
-mysql> DELETE FROM book_table WHERE book_id = 20001;
-Query OK, 1 row affected (0.01 sec)
-
-mysql> SELECT * FROM book_table;
-+---------+----------------+--------------------+-------+------------+
-| book_id | book_name      | author_name        | price | sales_flag |
-+---------+----------------+--------------------+-------+------------+
-|   10001 | TwoPeace       | 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 | 冬目漱岩           |   420 |          1 |
-+---------+----------------+--------------------+-------+------------+
-4 rows in set (0.00 sec)

DATABASE_Q2_2_hirayama.txt

@@ -1,65 +0,0 @@
-mysql> SELECT * FROM items;
-+---------+------------------------+--------+-------------+
-| item_id | name                   | price  | category_id |
-+---------+------------------------+--------+-------------+
-|       1 | ローマのテーブル       | 150000 |           1 |
-|       2 | げーたるーど2000 500ml |    370 |           2 |
-|       3 | 原始肉                 |   2500 |           3 |
-|       4 | 魅惑の椅子             | 100000 |           1 |
-+---------+------------------------+--------+-------------+
-4 rows in set (0.00 sec)
-
-mysql> SELECT * FROM item_category;
-+-------------+---------------+
-| category_id | category_name |
-+-------------+---------------+
-|           1 | 家具          |
-|           2 | 飲料          |
-|           3 | 食品          |
-+-------------+---------------+
-3 rows in set (0.00 sec)
-
-mysql> SELECT * FROM items INNER JOIN item_category USING(category_id) ORDER BY price;
-+-------------+---------+------------------------+--------+---------------+
-| category_id | item_id | name                   | price  | category_name |
-+-------------+---------+------------------------+--------+---------------+
-|           2 |       2 | げーたるーど2000 500ml |    370 | 飲料          |
-|           3 |       3 | 原始肉                 |   2500 | 食品          |
-|           1 |       4 | 魅惑の椅子             | 100000 | 家具          |
-|           1 |       1 | ローマのテーブル       | 150000 | 家具          |
-+-------------+---------+------------------------+--------+---------------+
-4 rows in set (0.00 sec)
-
-mysql> SELECT * FROM items INNER JOIN item_category USING(category_id) WHERE category_name = "家具";
-+-------------+---------+------------------+--------+---------------+
-| category_id | item_id | name             | price  | category_name |
-+-------------+---------+------------------+--------+---------------+
-|           1 |       1 | ローマのテーブル | 150000 | 家具          |
-|           1 |       4 | 魅惑の椅子       | 100000 | 家具          |
-+-------------+---------+------------------+--------+---------------+
-2 rows in set (0.00 sec)
-
-mysql> SELECT * FROM items INNER JOIN item_category USING(category_id) WHERE price BETWEEN 1000 AND 50000;
-+-------------+---------+--------+-------+---------------+
-| category_id | item_id | name   | price | category_name |
-+-------------+---------+--------+-------+---------------+
-|           3 |       3 | 原始肉 |  2500 | 食品          |
-+-------------+---------+--------+-------+---------------+
-1 row in set (0.00 sec)
-
-mysql> SELECT COUNT(*) FROM items;
-+----------+
-| COUNT(*) |
-+----------+
-|        4 |
-+----------+
-1 row in set (0.00 sec)
-
-mysql> SELECT COUNT(*) AS data_count FROM items;
-+------------+
-| data_count |
-+------------+
-|          4 |
-+------------+
-1 row in set (0.00 sec)
-

DATABASE_Q2_hirayama;.txt

@@ -1,253 +0,0 @@
-mysql> SHOW databases;
-+--------------------+
-| Database           |
-+--------------------+
-| information_schema |
-| mysql              |
-| performance_schema |
-| q1                 |
-| rezodb             |
-| sys                |
-+--------------------+
-6 rows in set (0.01 sec)
-
-mysql> CREATE DATABASE Q2;
-Query OK, 1 row affected (0.02 sec)
-
-mysql> SHOW databases;
-+--------------------+
-| Database           |
-+--------------------+
-| information_schema |
-| mysql              |
-| performance_schema |
-| q1                 |
-| q2                 |
-| rezodb             |
-| sys                |
-+--------------------+
-7 rows in set (0.00 sec)
-
-mysql> USE q2;
-Database changed
-mysql> SHOW tables;
-Empty set (0.00 sec)
-
-mysql> CREATE TABLE item_category(category_id INT, category_name VARCHAR(256));
-Query OK, 0 rows affected (0.03 sec)
-
-mysql> SELECT * FROM item_category;
-Empty set (0.00 sec)
-
-mysql> CREATE TABLE items(item_id INT, name VARCHAR(256), price INT, category_id INT);
-Query OK, 0 rows affected (0.03 sec)
-
-mysql> SELECT * FROM item_category;
-Empty set (0.00 sec)
-
-mysql> INSERT INTO item_category VALUES(1, '家具'), (2, '飲料'), (3, '食品');
-Query OK, 3 rows affected (0.01 sec)
-Records: 3  Duplicates: 0  Warnings: 0
-
-mysql> SELECT * FROM item_category;
-+-------------+---------------+
-| category_id | category_name |
-+-------------+---------------+
-|           1 | 家具          |
-|           2 | 飲料          |
-|           3 | 食品          |
-+-------------+---------------+
-3 rows in set (0.00 sec)
-
-mysql> SELECT * FROM item;
-ERROR 1146 (42S02): Table 'q2.item' doesn't exist
-mysql> SELECT * FROM items;
-Empty set (0.00 sec)
-
-mysql> INSERT INTO items VALUES(1, 'ローマのテーブル', 150000, 1), (2, 'げーたるーど2000 500ml', 370, 2), (3, '原始肉' 2500, 3), (4, '魅惑の椅子' 100000, 1);
-ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '2500, 3), (4, '魅惑の椅子' 100000, 1)' at line 1
-mysql> INSERT INTO items VALUES(1, 'ローマのテーブル', 150000, 1), (2, 'げーたるーど2000 500ml', 370, 2), (3, '原始肉', 2500, 3), (4, '魅惑の椅子' 100000, 1);
-ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '100000, 1)' at line 1
-mysql> INSERT INTO items VALUES(1, 'ローマのテーブル', 150000, 1), (2, 'げーたるーど2000 500ml', 370, 2), (3, '原始肉', 2500, 3), (4, '魅惑の椅子', 100000, 1);
-Query OK, 4 rows affected (0.00 sec)
-Records: 4  Duplicates: 0  Warnings: 0
-
-mysql> SELECT * FROM items;
-+---------+------------------------+--------+-------------+
-| item_id | name                   | price  | category_id |
-+---------+------------------------+--------+-------------+
-|       1 | ローマのテーブル       | 150000 |           1 |
-|       2 | げーたるーど2000 500ml |    370 |           2 |
-|       3 | 原始肉                 |   2500 |           3 |
-|       4 | 魅惑の椅子             | 100000 |           1 |
-+---------+------------------------+--------+-------------+
-4 rows in set (0.00 sec)
-
-mysql> SELECT * FROM items, item_category;
-+---------+------------------------+--------+-------------+-------------+---------------+
-| item_id | name                   | price  | category_id | category_id | category_name |
-+---------+------------------------+--------+-------------+-------------+---------------+
-|       1 | ローマのテーブル       | 150000 |           1 |           3 | 食品          |
-|       1 | ローマのテーブル       | 150000 |           1 |           2 | 飲料          |
-|       1 | ローマのテーブル       | 150000 |           1 |           1 | 家具          |
-|       2 | げーたるーど2000 500ml |    370 |           2 |           3 | 食品          |
-|       2 | げーたるーど2000 500ml |    370 |           2 |           2 | 飲料          |
-|       2 | げーたるーど2000 500ml |    370 |           2 |           1 | 家具          |
-|       3 | 原始肉                 |   2500 |           3 |           3 | 食品          |
-|       3 | 原始肉                 |   2500 |           3 |           2 | 飲料          |
-|       3 | 原始肉                 |   2500 |           3 |           1 | 家具          |
-|       4 | 魅惑の椅子             | 100000 |           1 |           3 | 食品          |
-|       4 | 魅惑の椅子             | 100000 |           1 |           2 | 飲料          |
-|       4 | 魅惑の椅子             | 100000 |           1 |           1 | 家具          |
-+---------+------------------------+--------+-------------+-------------+---------------+
-12 rows in set (0.00 sec)
-
-mysql> SELECT * FROM items JOIN item_category;
-+---------+------------------------+--------+-------------+-------------+---------------+
-| item_id | name                   | price  | category_id | category_id | category_name |
-+---------+------------------------+--------+-------------+-------------+---------------+
-|       1 | ローマのテーブル       | 150000 |           1 |           3 | 食品          |
-|       1 | ローマのテーブル       | 150000 |           1 |           2 | 飲料          |
-|       1 | ローマのテーブル       | 150000 |           1 |           1 | 家具          |
-|       2 | げーたるーど2000 500ml |    370 |           2 |           3 | 食品          |
-|       2 | げーたるーど2000 500ml |    370 |           2 |           2 | 飲料          |
-|       2 | げーたるーど2000 500ml |    370 |           2 |           1 | 家具          |
-|       3 | 原始肉                 |   2500 |           3 |           3 | 食品          |
-|       3 | 原始肉                 |   2500 |           3 |           2 | 飲料          |
-|       3 | 原始肉                 |   2500 |           3 |           1 | 家具          |
-|       4 | 魅惑の椅子             | 100000 |           1 |           3 | 食品          |
-|       4 | 魅惑の椅子             | 100000 |           1 |           2 | 飲料          |
-|       4 | 魅惑の椅子             | 100000 |           1 |           1 | 家具          |
-+---------+------------------------+--------+-------------+-------------+---------------+
-12 rows in set (0.00 sec)
-
-mysql> SELECT item_category.category_id, items.item_id, items.name, items.price, item_category.name FROM item_category INNER JOIN items ON item_category.category_id;
-ERROR 1054 (42S22): Unknown column 'item_category.name' in 'field list'
-mysql> SELECT item_category.category_id, items.item_id, items.name, items.price, item_category.name FROM item_category INNER JOIN items ON item_category.category_id = item_category.category_id;
-ERROR 1054 (42S22): Unknown column 'item_category.name' in 'field list'
-mysql> SELECT item_category.category_id, items.item_id, items.name, items.price, item_category.name FROM item_category INNER JOIN items ON item_category.category_id = items.category_id;
-ERROR 1054 (42S22): Unknown column 'item_category.name' in 'field list'
-mysql> SELECT item_category.category_id, items.item_id, items.name, items.price, item_category.name FROM item_category INNER JOIN items ON items.category_id = item_category.category_id;
-ERROR 1054 (42S22): Unknown column 'item_category.name' in 'field list'
-mysql> SELECT * FROM items;
-+---------+------------------------+--------+-------------+
-| item_id | name                   | price  | category_id |
-+---------+------------------------+--------+-------------+
-|       1 | ローマのテーブル       | 150000 |           1 |
-|       2 | げーたるーど2000 500ml |    370 |           2 |
-|       3 | 原始肉                 |   2500 |           3 |
-|       4 | 魅惑の椅子             | 100000 |           1 |
-+---------+------------------------+--------+-------------+
-4 rows in set (0.00 sec)
-
-mysql> SELECT * FROM item_category;
-+-------------+---------------+
-| category_id | category_name |
-+-------------+---------------+
-|           1 | 家具          |
-|           2 | 飲料          |
-|           3 | 食品          |
-+-------------+---------------+
-3 rows in set (0.00 sec)
-
-mysql> SELECT category_id, item_id, name, price FROM items INNER JOIN item_category ON category_id = category_id;
-ERROR 1052 (23000): Column 'category_id' in field list is ambiguous
-mysql> SELECT category_id, item_id, name, price FROM items INNER JOIN item_category ON category_id = items.category_id;
-ERROR 1052 (23000): Column 'category_id' in field list is ambiguous
-mysql> SELECT category_id, item_id, name, price FROM items INNER JOIN item_category ON item_category.category_id = items.category_id;
-ERROR 1052 (23000): Column 'category_id' in field list is ambiguous
-mysql> SELECT * FROM item_category INNTER JOIN items ON item_category.category_id = items.category_item;
-ERROR 1054 (42S22): Unknown column 'item_category.category_id' in 'on clause'
-mysql> SELECT * FROM item_category INNER JOIN items ON item_category.category_id = items.category_item;
-ERROR 1054 (42S22): Unknown column 'items.category_item' in 'on clause'
-mysql> SELECT item_category.category_id as category_id, items.item_id as item_id, items.name as name, items.price as price, item_category.name as name FROM item_category INNER JOIN items ON item_category.category_id = items.category_id;
-ERROR 1054 (42S22): Unknown column 'item_category.name' in 'field list'
-mysql>
-mysql> SELECT item_category.category_id as category_id, items.item_id as item_id, items.name, items.price as price, item_category.name as name FROM item_category INNER JOIN items ON item_category.category_id = items.category_id;
-ERROR 1054 (42S22): Unknown column 'item_category.name' in 'field list'
-mysql> SHOW COLUMNS FROM
-    -> ;
-ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 1
-mysql> SELECT * FROM items INNER JOIN item_category USING(category_id);
-+-------------+---------+------------------------+--------+---------------+
-| category_id | item_id | name                   | price  | category_name |
-+-------------+---------+------------------------+--------+---------------+
-|           1 |       1 | ローマのテーブル       | 150000 | 家具          |
-|           2 |       2 | げーたるーど2000 500ml |    370 | 飲料          |
-|           3 |       3 | 原始肉                 |   2500 | 食品          |
-|           1 |       4 | 魅惑の椅子             | 100000 | 家具          |
-+-------------+---------+------------------------+--------+---------------+
-4 rows in set (0.00 sec)
-
-mysql> SELECT * FROM items;
-+---------+------------------------+--------+-------------+
-| item_id | name                   | price  | category_id |
-+---------+------------------------+--------+-------------+
-|       1 | ローマのテーブル       | 150000 |           1 |
-|       2 | げーたるーど2000 500ml |    370 |           2 |
-|       3 | 原始肉                 |   2500 |           3 |
-|       4 | 魅惑の椅子             | 100000 |           1 |
-+---------+------------------------+--------+-------------+
-4 rows in set (0.00 sec)
-
-mysql> SELECT * FROM item_category;
-+-------------+---------------+
-| category_id | category_name |
-+-------------+---------------+
-|           1 | 家具          |
-|           2 | 飲料          |
-|           3 | 食品          |
-+-------------+---------------+
-3 rows in set (0.00 sec)
-
-mysql> SELECT * FROM items INNER JOIN item_category USING(category_id);
-+-------------+---------+------------------------+--------+---------------+
-| category_id | item_id | name                   | price  | category_name |
-+-------------+---------+------------------------+--------+---------------+
-|           1 |       1 | ローマのテーブル       | 150000 | 家具          |
-|           2 |       2 | げーたるーど2000 500ml |    370 | 飲料          |
-|           3 |       3 | 原始肉                 |   2500 | 食品          |
-|           1 |       4 | 魅惑の椅子             | 100000 | 家具          |
-+-------------+---------+------------------------+--------+---------------+
-4 rows in set (0.00 sec)
-
-mysql> SELECT * FROM items INNER JOIN item_category USING(category_id) as ktable;
-ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'as ktable' at line 1
-mysql> CREATE table SELECT * FROM items INNER JOIN item_category USING(category_id);
-ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'SELECT * FROM items INNER JOIN item_category USING(category_id)' at line 1
-mysql> SELECT * FROM items INNER JOIN item_category USING(category_id);
-+-------------+---------+------------------------+--------+---------------+
-| category_id | item_id | name                   | price  | category_name |
-+-------------+---------+------------------------+--------+---------------+
-|           1 |       1 | ローマのテーブル       | 150000 | 家具          |
-|           2 |       2 | げーたるーど2000 500ml |    370 | 飲料          |
-|           3 |       3 | 原始肉                 |   2500 | 食品          |
-|           1 |       4 | 魅惑の椅子             | 100000 | 家具          |
-+-------------+---------+------------------------+--------+---------------+
-4 rows in set (0.00 sec)
-
-mysql> SELECT * FROM category_id ORFER BY price;
-ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'BY price' at line 1
-mysql> SELECT * FROM items INNER JOIN item_category USING(category_id);
-+-------------+---------+------------------------+--------+---------------+
-| category_id | item_id | name                   | price  | category_name |
-+-------------+---------+------------------------+--------+---------------+
-|           1 |       1 | ローマのテーブル       | 150000 | 家具          |
-|           2 |       2 | げーたるーど2000 500ml |    370 | 飲料          |
-|           3 |       3 | 原始肉                 |   2500 | 食品          |
-|           1 |       4 | 魅惑の椅子             | 100000 | 家具          |
-+-------------+---------+------------------------+--------+---------------+
-4 rows in set (0.00 sec)
-
-mysql> SELECT * FROM ORFER BY price;
-ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'BY price' at line 1
-mysql> SELECT * FROM items INNER JOIN item_category USING(category_id) ORDER BY price;
-+-------------+---------+------------------------+--------+---------------+
-| category_id | item_id | name                   | price  | category_name |
-+-------------+---------+------------------------+--------+---------------+
-|           2 |       2 | げーたるーど2000 500ml |    370 | 飲料          |
-|           3 |       3 | 原始肉                 |   2500 | 食品          |
-|           1 |       4 | 魅惑の椅子             | 100000 | 家具          |
-|           1 |       1 | ローマのテーブル       | 150000 | 家具          |
-+-------------+---------+------------------------+--------+---------------+
-4 rows in set (0.00 sec)

MYSQL_Question1.txt

@@ -0,0 +1,32 @@
+--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＝コー＝ポロ', 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;

MYSQL_Question2.txt

@@ -0,0 +1,29 @@
+--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 values(1, '家具');
+insert into item_category values(2, '飲料');
+insert into item_category values(3, '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),
+    foreign key(category_id) references item_category(category_id)
+);
+insert into items values(1,'ローマのテーブル', 150000, 1);
+insert into items values(2,'げーたるーど2000 500ml', 370, 2);
+insert into items values(3,'原始肉', 2500, 3);
+insert into items values(4,'魅惑の椅子', 100000, 1);
+
+--問3
+select * from items inner join item_category using(category_id);
+
+--問4
+select * from items inner join item_category using(category_id) order by price;

MYSQL_Question2_5-.txt

@@ -0,0 +1,14 @@
+--問5
+select * from items inner join item_category using(category_id) where category_name = '家具';
+
+--問6
+select * from items inner join item_category using(category_id) where price between 1000 and 50000;
+
+--問7
+select count(*) as data_count from items;
+
+--問8
+select * from items inner join item_category using(category_id) where  price = (select max(price) from items);
+
+--問9
+select * from items inner join item_category using(category_id) where name like '%の%';

Question2+α.txt

@@ -0,0 +1,10 @@
+--問1
+select items.item_id as 商品ID, items.name as 商品名, items.price as 価格, 
+    item_category.name as カテゴリ名 from items inner join item_category using(category_id);
+    
+--問2
+select orders.order_id as 注文ID, orders.order_time as 注文日時, users.name as ユーザー名, 
+    items.name as 商品名, items.price as 価格, order_items.quantity as 数量 from order_items
+    inner join orders using(order_id)
+    inner join items using(item_id)
+    inner join users using(user_id) order by orders.order_time;