*HARD* IBM SQL Interview Question (StrataScratch 10538)

Solution and walkthrough of a real SQL interview question for Data Scientist and Data Analyst technical coding interviews. This question was asked by IBM and is called "Friday Purchases".
Try this question on StrataScratch: platform.stratascratch.com/co...
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0:00 Intro
0:18 Problem Statement
2:09 Solution Walkthrough
7:57 The Calendar Problem
12:15 Outro
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