12. エラーの内容
Mysql2::Error: Table 'DatabaseA.user_detail'
doesn't exist: SELECT COUNT(DISTINCT
`users`.`id`) FROM `users` LEFT OUTER JOIN
`user_detail` ON `user_details`.`id` =
`accounts`.`user_id` WHERE
`accounts`.`individual_order_flag` = 1 AND
(`accounts`.`deleted_at` IS NULL)