Use EDA to find impossible scenarios

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

Latihan ini adalah bagian dari kursus

Writing Functions and Stored Procedures in SQL Server

Petunjuk latihan

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.

Latihan interaktif praktis

Cobalah latihan ini dengan menyelesaikan kode contoh berikut.

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;

Edit dan Jalankan Kode