2026_1011_3FR_Java_Kyono/question_db
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瓦　昴世
2026-10-28 10:48:39 +09:00
parent 1becaf2b81
commit 8c328ae16e
5 changed files with 130 additions and 1 deletions
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SQL/q2.sql Normal file
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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><>%';