2026_0910_AI_5G_Java_MUN/db-lesson
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q2_提出

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高山　茜
2026-09-28 16:36:39 +09:00
parent 568ad52405
commit 21216bb6fa
2 changed files with 31 additions and 0 deletions
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1
【練習問題】 SQL/Question1/q1.txt
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@@ -24,4 +24,5 @@ SELECT book_id, book_name, author_name,price, sales_flag FROM book_table where a
問7
DELETE FROM book_table WHERE book_id = 20001;
SELECT * FROM book_table;

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【練習問題】 SQL/Question2/q2.txt Normal file
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@@ -0,0 +1,30 @@
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 * FROM item WHERE item.name LIKE '%の%';
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 > 10000;