What are the phone numbers of all customers and all staff members?
SELECT phone_number FROM customers UNION SELECT phone_number FROM staff
SELECT phone_number FROM customers UNION SELECT phone_number FROM staff
[{'phone_number': '(379)551-0838x146'}, {'phone_number': '(383)553-1035x20399'}, {'phone_number': '+38(3)9011433816'}, {'phone_number': '044-468-4549'}, {'phone_number': '06963347450'}, {'phone_number': '1-132-839-9409x288'}, {'phone_number': '1-369-302-7623x576'}, {'phone_number': '142-311-6503x206'}, {'phone_number': '155-811-6153'}, {'phone_number': '345-656-5571'}, {'phone_number': '470-803-0244'}, {'phone_number': '548.373.3603x59134'}, {'phone_number': '578.019.7943x328'}, {'phone_number': '751-262-8424x575'}, {'phone_number': '997.698.4779x882'}]