質問編集履歴
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inventoryとfilmのcreate文を追加しました
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@@ -1,7 +1,51 @@
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現在sqlでデータ集計しているのですが、データが抜け落ちる原因がわからないです。
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どなたかご教授ください。
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```sql
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inventory |
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CREATE TABLE `inventory` (
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`inventory_id` mediumint(8) unsigned NOT NULL AUTO_INCREMENT,
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`film_id` smallint(5) unsigned NOT NULL,
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`store_id` tinyint(3) unsigned NOT NULL,
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`last_update` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
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PRIMARY KEY (`inventory_id`),
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KEY `idx_fk_film_id` (`film_id`),
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KEY `idx_store_id_film_id` (`store_id`,`film_id`),
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CONSTRAINT `fk_inventory_film` FOREIGN KEY (`film_id`) REFERENCES `film` (`film_id`) ON DELETE RESTRICT ON UPDATE CASCADE,
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CONSTRAINT `fk_inventory_store` FOREIGN KEY (`store_id`) REFERENCES `store` (`store_id`) ON DELETE RESTRICT ON UPDATE CASCADE
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) ENGINE=InnoDB AUTO_INCREMENT=4582 DEFAULT CHARSET=utf8
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film |
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CREATE TABLE `film` (
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`film_id` smallint(5) unsigned NOT NULL AUTO_INCREMENT,
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`title` varchar(255) NOT NULL,
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`description` text,
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`release_year` year(4) DEFAULT NULL,
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`language_id` tinyint(3) unsigned NOT NULL,
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`original_language_id` tinyint(3) unsigned DEFAULT NULL,
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`rental_duration` tinyint(3) unsigned NOT NULL DEFAULT '3',
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`rental_rate` decimal(4,2) NOT NULL DEFAULT '4.99',
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`length` smallint(5) unsigned DEFAULT NULL,
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`replacement_cost` decimal(5,2) NOT NULL DEFAULT '19.99',
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`rating` enum('G','PG','PG-13','R','NC-17') DEFAULT 'G',
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`special_features` set('Trailers','Commentaries','Deleted Scenes','Behind the Scenes') DEFAULT NULL,
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`last_update` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
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PRIMARY KEY (`film_id`),
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KEY `idx_title` (`title`),
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KEY `idx_fk_language_id` (`language_id`),
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KEY `idx_fk_original_language_id` (`original_language_id`),
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CONSTRAINT `fk_film_language` FOREIGN KEY (`language_id`) REFERENCES `language` (`language_id`) ON DELETE RESTRICT ON UPDATE CASCADE,
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CONSTRAINT `fk_film_language_original` FOREIGN KEY (`original_language_id`) REFERENCES `language` (`language_id`) ON DELETE RESTRICT ON UPDATE CASCADE
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) ENGINE=InnoDB AUTO_INCREMENT=1001 DEFAULT CHARSET=utf8
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```
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```sql
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SELECT
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i.inventory_id
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,i.store_id
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