Seconds or no seconds?

In the video, you saw how DATEDIFF() can be used to calculate the trip time by finding the difference between Start and End time, but how do you know the dataset includes seconds in the transactions?

Here, you'll use DATEPART() to see how many transactions have seconds greater than zero and how many have them equal to zero. Then you can evaluate if this is an appropriate amount. The CASE statement will segregate the dataset into two categories.

Diese Übung ist Teil des Kurses

Writing Functions and Stored Procedures in SQL Server

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Anleitung zur Übung

Complete the first CASE statement, using DATEPART() to evaluate the SECOND date part of StartDate.
Complete the second CASE statement in the GROUP BY the same way.

Interaktive Übung

Versuche dich an dieser Übung, indem du diesen Beispielcode vervollständigst.

SELECT
	-- Count the number of IDs
	COUNT(ID) AS Count,
    -- Use DATEPART() to evaluate the SECOND part of StartDate
    "StartDate" = CASE WHEN ___(___, ___) = 0 THEN 'SECONDS = 0'
					   WHEN ___(___, ___) > 0 THEN 'SECONDS > 0' END
FROM CapitalBikeShare
GROUP BY
    -- Use DATEPART() to Group By the CASE statement
	CASE WHEN ___(___, ___) = 0 THEN 'SECONDS = 0'
		 WHEN ___(___, ___) > 0 THEN 'SECONDS > 0' END

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