66 lines
2.8 KiB
Plaintext
66 lines
2.8 KiB
Plaintext
mysql> SELECT * FROM items;
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+---------+------------------------+--------+-------------+
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| item_id | name | price | category_id |
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+---------+------------------------+--------+-------------+
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| 1 | ローマのテーブル | 150000 | 1 |
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| 2 | げーたるーど2000 500ml | 370 | 2 |
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| 3 | 原始肉 | 2500 | 3 |
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| 4 | 魅惑の椅子 | 100000 | 1 |
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+---------+------------------------+--------+-------------+
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4 rows in set (0.00 sec)
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mysql> SELECT * FROM item_category;
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+-------------+---------------+
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| category_id | category_name |
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+-------------+---------------+
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| 1 | 家具 |
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| 2 | 飲料 |
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| 3 | 食品 |
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+-------------+---------------+
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3 rows in set (0.00 sec)
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mysql> SELECT * FROM items INNER JOIN item_category USING(category_id) ORDER BY price;
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+-------------+---------+------------------------+--------+---------------+
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| category_id | item_id | name | price | category_name |
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+-------------+---------+------------------------+--------+---------------+
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| 2 | 2 | げーたるーど2000 500ml | 370 | 飲料 |
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| 3 | 3 | 原始肉 | 2500 | 食品 |
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| 1 | 4 | 魅惑の椅子 | 100000 | 家具 |
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| 1 | 1 | ローマのテーブル | 150000 | 家具 |
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+-------------+---------+------------------------+--------+---------------+
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4 rows in set (0.00 sec)
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mysql> SELECT * FROM items INNER JOIN item_category USING(category_id) WHERE category_name = "家具";
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+-------------+---------+------------------+--------+---------------+
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| category_id | item_id | name | price | category_name |
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+-------------+---------+------------------+--------+---------------+
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| 1 | 1 | ローマのテーブル | 150000 | 家具 |
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| 1 | 4 | 魅惑の椅子 | 100000 | 家具 |
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+-------------+---------+------------------+--------+---------------+
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2 rows in set (0.00 sec)
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mysql> SELECT * FROM items INNER JOIN item_category USING(category_id) WHERE price BETWEEN 1000 AND 50000;
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+-------------+---------+--------+-------+---------------+
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| category_id | item_id | name | price | category_name |
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+-------------+---------+--------+-------+---------------+
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| 3 | 3 | 原始肉 | 2500 | 食品 |
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+-------------+---------+--------+-------+---------------+
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1 row in set (0.00 sec)
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mysql> SELECT COUNT(*) FROM items;
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+----------+
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| COUNT(*) |
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+----------+
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| 4 |
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+----------+
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1 row in set (0.00 sec)
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mysql> SELECT COUNT(*) AS data_count FROM items;
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+------------+
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| data_count |
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+------------+
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| 4 |
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+------------+
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1 row in set (0.00 sec)
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