person_nbr last_name first_name
101 Chan A
102 Smith B
103 Jones c
104 Wilson D
I'm trying to find the number of airplanes service in JULY with the airplane reg_nbr, md_name, date_service and employee last and first name listed... this seems to be very complicated..
Am i suppose to join them all together??
I'm not sure how I am suppose to group them Thank you!