The Hardest Problem | Hackerrank SQL Solutions | 15 Days of Learning SQL Part 1 of 2

This is the first part of a two part Video series for the Problem "15 Days of learning SQL". The second part will be live on 7th of April 2021.
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0:00 Introduction
0:22 Problem Description
3:00 Output Requirements
6:00 Solution, output of first two columns
10:00 Solution, output of 3rd and 4th colum