SELECT phone_number FROM customers UNION SELECT phone_number FROM staff
SELECT phone_number FROM customers UNION SELECT phone_number FROM staff <table_name> : Staff col : staff_id | gender | first_name | last_name | email_address | phone_number row 1 : 114 | 0 | Ward | Boehm | marcelle.ritchie@example.com | (379)551-0838x146 row 2 : 115 | 1 | Lucie | Lowe | ohintz@example.org | 142-311-6503x206 row 3 : 116 | 0 | Dagmar | Erdman | wrau@example.com | 345-656-5571 row 4 : 117 | 0 | Bradly | Hahn | brett99@example.net | 1-132-839-9409x288 row 5 : 118 | 0 | Austin | Zieme | reichel.armani@example.org | (383)553-1035x20399 row 6 : 119 | 0 | Dorian | Oberbrunner | richard.gutkowski@example.com | 155-811-6153 row 7 : 120 | 0 | Mikel | Lynch | glen.borer@example.com | 751-262-8424x575 <table_name> : Customers col : customer_id | customer_type_code | address_line_1 | address_line_2 | town_city | state | email_address | phone_number row 1 : 113 | Good Credit Rating | 144 Legros Landing | Apt. 551 | Maryamport | Kansas | hsteuber@example.org | 06963347450 row 2 : 114 | Good Credit Rating | 039 Jedidiah Estate Suite 537 | Apt. 245 | Sauerberg | Hawaii | cayla.satterfield@example.net | 470-803-0244 row 3 : 115 | Good Credit Rating | 92189 Gulgowski Ranch Apt. 683 | Apt. 828 | Tyreekhaven | Tennessee | vida86@example.com | 997.698.4779x882 row 4 : 116 | Good Credit Rating | 72144 Katlynn Flat Suite 512 | Suite 959 | Hansenbury | Tennessee | vbogisich@example.org | 548.373.3603x59134 row 5 : 117 | Good Credit Rating | 1566 Ramona Overpass Apt. 464 | Suite 151 | North Alisaville | Florida | ubeier@example.org | 044-468-4549 row 6 : 118 | Defaults on payments | 425 Roman Tunnel | Apt. 495 | Funkstad | Colorado | lavonne.frami@example.com | +38(3)9011433816 row 7 : 119 | Good Credit Rating | 05355 Marcelle Radial | Suite 054 | Port Joshuah | Pennsylvania | paige.hyatt@example.com | 1-369-302-7623x576 row 8 : 120 | Defaults on payments | 518 Mann Park | Suite 035 | West Annamariestad | Iowa | rzulauf@example.org | 578.019.7943x328
col : phone_number row 1 : (379)551-0838x146 row 2 : (383)553-1035x20399 row 3 : +38(3)9011433816 row 4 : 044-468-4549 row 5 : 06963347450 row 6 : 1-132-839-9409x288 row 7 : 1-369-302-7623x576 row 8 : 142-311-6503x206 row 9 : 155-811-6153 row 10 : 345-656-5571 row 11 : 470-803-0244 row 12 : 548.373.3603x59134 row 13 : 578.019.7943x328 row 14 : 751-262-8424x575 row 15 : 997.698.4779x882