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石原　叶大
2026-10-27 17:27:13 +09:00
parent 1becaf2b81
commit 9552ee4505
13 changed files with 737 additions and 1 deletions
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63
練習問題/Part2.sql Normal file
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--<EFBFBD>e<EFBFBD>[<EFBFBD>u<EFBFBD><EFBFBD><EFBFBD>쐬
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>'
);
--<EFBFBD>f<EFBFBD>[<EFBFBD>^<EFBFBD>o<EFBFBD>^
INSERT INTO item_category VALUES(NULL, '<EFBFBD>Ƌ<EFBFBD>');
INSERT INTO item_category VALUES(NULL, '<EFBFBD><EFBFBD><EFBFBD><EFBFBD>');
INSERT INTO item_category VALUES(NULL, '<EFBFBD>H<EFBFBD>i');
--<EFBFBD>e<EFBFBD>[<EFBFBD>u<EFBFBD><EFBFBD><EFBFBD>쐬2
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)
);
--<EFBFBD>o<EFBFBD>^
INSERT INTO items VALUES(NULL, '<EFBFBD><EFBFBD><EFBFBD>[<5B>}<7D>̃e<CC83>[<5B>u<EFBFBD><75>', 150000, 1);
INSERT INTO items VALUES(NULL, '<EFBFBD><EFBFBD><EFBFBD>[<5B><><EFBFBD><EFBFBD><EFBFBD>[<5B><>2000 500ml', 370, 2);
INSERT INTO items VALUES(NULL, '<EFBFBD><EFBFBD><EFBFBD>_<EFBFBD><EFBFBD>', 2500, 3);
INSERT INTO items VALUES(NULL, '<EFBFBD><EFBFBD><EFBFBD>f<EFBFBD>̈֎q', 100000, 1);
--<EFBFBD><EFBFBD>3,4,5
SELECT items.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 item_category.category_name = '<EFBFBD>Ƌ<EFBFBD>'
ORDER BY items.price ASC;
---<EFBFBD><EFBFBD>6
SELECT items.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 items.price BETWEEN 1000 AND 50000;
--<EFBFBD><EFBFBD>7
SELECT COUNT (*) AS data_count FROM items;
--<EFBFBD><EFBFBD>8
SELECT items.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 items.price = (SELECT MAX(price) FROM items);
--<EFBFBD><EFBFBD>9
SELECT items.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 items.name LIKE '%<25><>%';