Use EDA to find impossible scenarios

Calculate how many YellowTripData records have each type of error discovered during EDA.

Questo esercizio fa parte del corso

Writing Functions and Stored Procedures in SQL Server

Istruzioni dell'esercizio

Use CASE and COUNT to understand how many records contain the following errors:
DropOffDate before PickupDate, DropOffDate before today, PickupDate before today, TripDistance is zero.

Esercizio pratico interattivo

Prova a risolvere questo esercizio completando il codice di esempio.

SELECT
	-- PickupDate is after today
	COUNT (CASE WHEN ___ > ___() THEN 1 END) AS 'FuturePickup',
    -- DropOffDate is after today
	COUNT (CASE WHEN ___ > ___() THEN 1 END) AS 'FutureDropOff',
    -- PickupDate is after DropOffDate
	COUNT (CASE WHEN ___ > ___ THEN 1 END) AS 'PickupBeforeDropoff',
    -- TripDistance is 0
	COUNT (CASE WHEN ___ = ___ THEN 1 END) AS 'ZeroTripDistance'  
FROM YellowTripData;

Modifica ed esegui il codice