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Monthly Overbooking Signals
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Monthly Overbooking Signals

EasySQL · PostgreSQL

Problem

Write a query to identify passengers who have booked more than three flights in a single month, displaying their names and total bookings.

Use the passengers and flight_bookings tables. Bookings with a NULL booked_at value must be ignored.

Output

  1. One row per passenger and qualifying booking month.
  2. Columns: passenger_name, booking_month, and total_bookings.
  3. Include only passenger-month combinations with more than three bookings. Order by booking_month ascending, then passenger_name ascending.

Schema

passengers
ColumnTypeDescription
passenger_idPKINTEGERUnique passenger identifier
passenger_nameVARCHAR(100)Passenger's full name
loyalty_tierVARCHAR(30)MileagePlus loyalty tier
flight_bookings
ColumnTypeDescription
booking_idPKINTEGERUnique booking identifier
passenger_idINTEGERPassenger associated with the booking
booked_atTIMESTAMPTimestamp when the flight was booked
flight_numberVARCHAR(10)United Airlines flight number
Tablespassengersflight_bookings
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Your question is Monthly Overbooking Signals. Start with the requirements and the two tables in the Question tab.

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