> billable_weeks - ["remote_worker_id", "timesheet_id", ["freelancer_id", "timesheet_id"]]
> billable_weeks - ["remote_worker_id", "timesheet_id", ["remote_worker_id", "timesheet_id"]]
> billable_weeks - ["remote_worker_id", "timesheet_id", ["timesheet_id", "worker_id"], ["remote_worker_id", "timesheet_id"], ["freelancer_id", "timesheet_id"]]
> billable_weeks - ["remote_worker_id", "timesheet_id", ["timesheet_id", "worker_id"]]
> companies_freelancers - [["company_id", "freelancer_id"], "company_id", "freelancer_id"]
> companies_freelancers - [["company_id", "freelancer_id"], "freelancer_id", "company_id"]
> companies_freelancers - [["company_id", "freelancer_id"]]
> companies_freelancers - [["employer_id", "worker_id"], ["company_id", "freelancer_id"], ["employer_id", "freelancer_id"]]
> complex_billable_week - [["complex_timesheet_id", "freelancer_id"], "slave_id", "id_complex_timesheet", ["id_complex_timesheet", "worker_id"], ["freelancer_id", "id_complex_timesheet"]]
> complex_billable_week - [["freelancer_id", "id_complex_timesheet"], "slave_id", "id_complex_timesheet", ["complex_timesheet_id", "freelancer_id"], ["id_complex_timesheet", "worker_id"]]
> complex_billable_week - [["id_complex_timesheet", "worker_id"], "slave_id", "id_complex_timesheet", ["freelancer_id", "id_complex_timesheet"]]
> complex_billable_week - [["id_complex_timesheet", "worker_id"], ["complex_timesheet_id", "freelancer_id"], "slave_id", "id_complex_timesheet", ["freelancer_id", "id_complex_timesheet"]]
> purchases - [["buyer_id", "present_id"], "buyer_id", "present_id"]
> purchases - [["buyer_id", "present_id"], "buyer_id", "present_id"]
> purchases - [["buyer_id", "present_id"]]
> purchases - [["buyer_id", "present_id"]]