q２_更新

【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/Question1/q1.txt

@@ -0,0 +1,28 @@
+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+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%';
-

【練習問題】 SQL/Question2/q2.txt

@@ -0,0 +1,29 @@
+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%'