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`invoice_items_trainee_id_foreign` FOREIGN KEY (`trainee_id`) REFERENCES `trainees` (`id`) ON DELETE SET NULL\n) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci"},{"name":"invoice_template_items","type":"BASE TABLE","comment":"","columns":[{"name":"id","type":"bigint unsigned","nullable":false,"default":null,"comment":"テンプレート明細ID","extra_def":"auto_increment"},{"name":"template_id","type":"bigint 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