Task 3(a) Number of Planes

Task Description:

How many planes (not types) are stored in relation departure? Name the column "Amount".


Departure
flight_labelflight_datetypeserial_numbercaptain
MKL19512003-11-12A-34019872630Bernhard
MKL22522004-03-05A-34084469308Gustav
MKL24512005-04-01A-38096461836Frank
MKL25172005-07-12TRIDENT84927665Gustav
MKL27252006-07-22A-38096461836Frank
MKL28992007-12-31A-34084469308Gustav
MKL31972008-05-09A-38096461836Bernhard
MKL32132008-10-03A-34019872630Bernhard
MKL32422008-12-31TRIDENT33962164Gustav
MKL33492009-01-01TRIDENT33962164Frank
MKL35992010-11-27A-38096461836Frank


Your Result: