Use EDA to find impossible scenarios

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

Cet exercice fait partie du cours

Writing Functions and Stored Procedures in SQL Server

Instructions

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.

Exercice interactif pratique

Essayez cet exercice en complétant cet exemple de code.

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;

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