What are the booking start and end dates of the apartments with more than 2 bedrooms ?
SELECT T1.booking_start_date ,  T1.booking_start_date FROM Apartment_Bookings AS T1 JOIN Apartments AS T2 ON T1.apt_id   =   T2.apt_id WHERE T2.bedroom_count  >  2
apartments with more than 2 bedrooms refers to bedroom_count > 2; booking start and end dates refer to booking_start_date and booking_end_date; JOIN is used to combine rows from two or more tables based on a related column between them, in this case, apt_id.