Photo by Markus Winkler on Unsplash



Calculating values in a query

Case Statement

Cast Statement


Filtering and Targeting Data





Input: [7,1,5,3,6,4]
Output: 5
Explanation: Buy on day 2 (price = 1) and sell on day 5 (price = 6), profit = 6-1 = 5. …

Yixuan Zhou

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