mysql - SELECT an attribute from a table but need conditions met in other tables -
okay i'm new database excuse lack of knowledge please. ive looking answers online , dont quite understand need do. have find out plane flying specific flight given date, time, route. these attributes each entity
airplaneid
airplaneid -pk
planetype
dflights
flightnumber-pk
flightdate-pk
flightduration
flight
flightnumber-pk
airportid
it's not possible return specified result relations shown.
there no common values stored in (unfortunately named) airplaneid
entity relation, , other 2 entity relations.
i'll put example of how done...
you'd need have airplaneid
stored in relation, along flightnumber
, flightdate
in order associate 2 entities.
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