MySQL SQL練習問題20261027

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;

Question2/【+α】SQL/MySQL_question2.sql

@@ -111,31 +111,4 @@ INSERT INTO order_items (order_id, item_id, quantity) VALUES (9, 3, 4);
 INSERT INTO order_items (order_id, item_id, quantity) VALUES (9, 5, 2);
 INSERT INTO order_items (order_id, item_id, quantity) VALUES (9, 8, 10);
 INSERT INTO order_items (order_id, item_id, quantity) VALUES (10, 1, 2);
-INSERT INTO order_items (order_id, item_id, quantity) VALUES (10, 10, 2);
+INSERT INTO order_items (order_id, item_id, quantity) VALUES (10, 10, 2);
-
---Q1--
-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
-LEFT OUTER JOIN item_category  ON item_category.category_id = items.category_id;
-
-
---Q2--
-SELECT orders.order_id AS '注文ID',orders.order_time AS '注文日時', users.name AS 'ユーザ名',items.name AS '商品名',items.price AS '価格', order_items.quantity AS '数量'
-FROM order_items
-INNER JOIN orders ON orders.order_id = order_items.order_id
-INNER JOIN users ON users.user_id = orders.user_id
-INNER JOIN items ON items.item_id = order_items.item_id
-ORDER BY orders.order_time ASC;
-
-
---Q3--
-SELECT  orders.order_id AS '注文ID',orders.order_time AS '注文日時',users.name AS 'ユーザ名',
-SUM(items.price * order_items.quantity) AS '合計額'
-FROM orders
-INNER JOIN users ON users.user_id = orders.user_id
-INNER JOIN order_items ON order_items.order_id = orders.order_id
-INNER JOIN items ON items.item_id = order_items.item_id
-GROUP BY orders.order_id,orders.order_time,users.name
-ORDER BY orders.order_time ASC;
-
---Q4--
-SELECT 

SQL/kougi.sql

@@ -1,21 +0,0 @@
-CREATE TABLE emp_table (
-    emp_no   INT,
-    emp_name VARCHAR(50),
-    salary   INT
-);  
-
---<EFBFBD>o<EFBFBD>^
-INSERT INTO emp_table VALUES(1,'<EFBFBD><EFBFBD><EFBFBD><EFBFBD>',200000);
-INSERT INTO emp_table VALUES(2,'<EFBFBD>c<EFBFBD><EFBFBD>',500000);
-
---<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
-SELECT * FROM emp_table;
-SELECT * FROM emp_table WHERE emp_no = 1;
-
---<EFBFBD>X<EFBFBD>V
-UPDATE emp_table SET salary = 100;
-SELECT * FROM emp_table;
-
---<EFBFBD>폜
-DELETE FROM emp_table;
-SELECT * FROM emp_table;

SQL/q1.sql

@@ -1,25 +0,0 @@
-CREATE TABLE book_table (
-    book_id   INT,
-    book_name VARCHAR(50),
-    author_name VARCHAR(50),
-    price INT,
-    sales_flag INT
-);  
-
-INSERT INTO book_table VALUES (10001,'TwoPeace','<EFBFBD>O<EFBFBD>c<EFBFBD>p<EFBFBD><EFBFBD><EFBFBD>Y',420,'1');
-INSERT INTO book_table VALUES (10002,'<EFBFBD><EFBFBD><EFBFBD>T<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>c<EFBFBD><EFBFBD>','<EFBFBD>ŽR<EFBFBD>ӂ݂<EFBFBD>',460,'1');
-INSERT INTO book_table VALUES (20001,'<EFBFBD>V<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>','<EFBFBD>~<7E>ڐ<EFBFBD><DA90><EFBFBD>',460,'1');
-INSERT INTO book_table VALUES (30001,'<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>^','<EFBFBD>s<EFBFBD><EFBFBD>',1000,'1');
-INSERT INTO book_table VALUES (40001,'<EFBFBD><EFBFBD><EFBFBD>y<EFBFBD>͌<EFBFBD><EFBFBD>ł<EFBFBD><EFBFBD><EFBFBD>','<EFBFBD>~<7E>ڐ<EFBFBD><DA90><EFBFBD>',420,'1');
-
-DELETE FROM book_table WHERE book_id = 10001;
-DELETE FROM book_table;
-
-SELECT book_name,author_name FROM book_table;
-
-UPDATE book_table SET author_name = '<EFBFBD>}<7D>[<5B><><EFBFBD><EFBFBD><EFBFBD>R<EFBFBD>[<5B><><EFBFBD>|<7C><>' WHERE book_id = 30001;
-UPDATE book_table SET sales_flag = '0' WHERE book_id = 30001;
-
-SELECT * FROM book_table HAVING sales_flag = '1';
-
-DELETE FROM book_table WHERE book_id = 20001;

SQL/q2+.sql

@@ -1,6 +0,0 @@
-CREATE DATABASE Q2Extends   ;
-show databases;
-
-
---Q1--
-CREATE TABLE syouhine

SQL/q2.sql

@@ -1,50 +0,0 @@
-CREATE TABLE item_category (
-category_id INT PRIMARY KEY AUTO_INCREMENT COMMENT '<EFBFBD>J<EFBFBD>e<EFBFBD>S<EFBFBD><EFBFBD>ID',
-category_name VARCHAR(256) NOT NULL COMMENT '<EFBFBD>J<EFBFBD>e<EFBFBD>S<EFBFBD><EFBFBD><EFBFBD><EFBFBD>'
-); 
-
-
-INSERT INTO item_category VALUES (1,'<EFBFBD>Ƌ<EFBFBD>');
-INSERT INTO item_category VALUES (2,'<EFBFBD><EFBFBD><EFBFBD><EFBFBD>');
-INSERT INTO item_category VALUES (3,'<EFBFBD>H<EFBFBD>i');
-
-
-CREATE TABLE items (
-item_id INT PRIMARY KEY AUTO_INCREMENT COMMENT '<EFBFBD>A<EFBFBD>C<EFBFBD>e<EFBFBD><EFBFBD>ID',
-name VARCHAR(256) NOT NULL COMMENT '<EFBFBD>A<EFBFBD>C<EFBFBD>e<EFBFBD><EFBFBD><EFBFBD><EFBFBD>',
-price INT NOT NULL COMMENT '<EFBFBD><EFBFBD><EFBFBD>i',
-category_id INT COMMENT '<EFBFBD>J<EFBFBD>e<EFBFBD>S<EFBFBD><EFBFBD>ID',
-FOREIGN KEY (category_id) REFERENCES item_category(category_id)
-);
-
-INSERT INTO items VALUES (1,'<EFBFBD><EFBFBD><EFBFBD>[<5B>}<7D>̃e<CC83>[<5B>u<EFBFBD><75>',150000,1);
-INSERT INTO items VALUES (2,'<EFBFBD><EFBFBD><EFBFBD>[<5B><><EFBFBD><EFBFBD><EFBFBD>[<5B><>2000 500ml',370,2);
-INSERT INTO items VALUES (3,'<EFBFBD><EFBFBD><EFBFBD>n<EFBFBD><EFBFBD>',2500,3);
-INSERT INTO items VALUES (4,'<EFBFBD><EFBFBD><EFBFBD>f<EFBFBD>̈֎q',100000,1);
-
-SELECT item_category.category_id,items.item_id,items.name,items.price,item_category.category_name AS name  
-FROM item_category LEFT OUTER JOIN items ON items.category_id = item_category.category_id;
-
-UPDATE items SET price = 100000 WHERE items.name = '<EFBFBD><EFBFBD><EFBFBD>f<EFBFBD>̈֎q';
-
-SELECT item_category.category_id,items.item_id,items.name,items.price,item_category.category_name AS name  
-FROM item_category LEFT OUTER JOIN items ON items.category_id = item_category.category_id 
-ORDER BY items.price;
-
-SELECT item_category.category_id,items.item_id,items.name,items.price,item_category.category_name AS name   
-FROM item_category LEFT OUTER JOIN items ON items.category_id = item_category.category_id WHERE item_category.category_id = 1;
-
-SELECT item_category.category_id,items.item_id,items.name,items.price,item_category.category_name AS name   
-FROM item_category LEFT OUTER JOIN items ON items.category_id = item_category.category_id WHERE items.price >=1000 and items.price <=50000;
-
-SELECT COUNT(*)AS data_count FROM items;
-
---Q8--
-SELECT item_category.category_id,items.item_id,items.name,items.price,item_category.category_name AS name   
-FROM item_category LEFT OUTER JOIN items ON items.category_id = item_category.category_id
-WHERE items.price = (SELECT MAX(price) FROM items);
-
----Q9---
-SELECT item_category.category_id,items.item_id,items.name,items.price,item_category.category_name AS name   
-FROM item_category LEFT OUTER JOIN items ON items.category_id = item_category.category_id
-WHERE items.name LIKE '%<25><>%';