A table named Profits stores the total profit made each year within a territory. The Profits table has columns named Territory, Year, and Profit. You need to create a
report that displays the profits made by each territory for each year and its preceding year. Which Transact-SQL query should you use?
A.
SELECT Territory, Year, Profit,
LAG(Profit, 1, 0) OVER(PARTITION BY Year ORDER BY Territory) AS NextProfit FROM Profits
B.
SELECT Territory, Year, Profit,
LAG(Profit, 1, 0) OVER(PARTITION BY Territory ORDER BY Year) AS NextProfit FROM Profits
C.
SELECT Territory, Year, Profit,
LEAD(Profit, 1, 0) OVER(PARTITION BY Territory ORDER BY Year) AS NextProfit FROM Profits
D.
SELECT Territory, Year, Profit,
LEAD(Profit, 1, 0) OVER(PARTITION BY Year ORDER BY Territory) AS NextProfit FROM Profits
Explanation:
http://msdn.microsoft.com/en-us/library/hh231256.aspx Reference: http://msdn.microsoft.com/en-us/library/hh213125.aspx