SELECT r1.date, e1.id_employees, r1.id_department, s1.id_office, s1.startTime
FROM tbl_schedule as r1
INNER JOIN tbl_calendar AS k1 ON r1.date = k1.date
INNER JOIN tbl_citydepartmentoffice AS s1 ON (k1.id_cityDepartmentOffice = s1.Id_cityDeparmentOffice AND r1.id_department = s1.id_department)
INNER JOIN tbl_employees AS e1 ON r1.id_employees=e1.id_employees
WHERE r1.date = DATE('2020-06-01')
AND s1.id_office =(SELECT s2.id_office
FROM tbl_schedule as r2
INNER JOIN tbl_calendar AS k2 ON r2.date = k2.date
INNER JOIN tbl_citydepartmentoffice AS s2 ON (k2.id_cityDepartmentOffice = s2.Id_cityDeparmentOffice AND r2.id_department = s2.id_department)
INNER JOIN tbl_employees AS e2 ON r2.id_employees=e2.id_employees
WHERE r2.id_employees='1001' AND r2.date = DATE('2020-06-01'))