Staff_Shifts

INSERT INTO staff_shifts(staff_id, shift_id) VALUES('1', '1');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('1', '2');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('2', '1');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('2', '2');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('3', '4');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('3', '1');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('4', '4');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('4', '3');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('5', '5');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('5', '4');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('6', '5');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('6', '4');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('7', '5');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('7', '1');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('8', '5');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('8', '1');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('9', '8');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('9', '9');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('10', '9');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('10', '8');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('11', '10');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('11', '5');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('12', '10');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('12', '7');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('13', '1');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('13', '7');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('14', '1');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('14', '6');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('15', '2');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('15', '10');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('16', '2');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('16', '10');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('17', '6');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('17', '7');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('18', '6');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('18', '7');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('19', '4');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('19', '1');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('20', '4');
INSERT INTO staff_shifts(staff_id, shift_id) VALUES('20', '1');