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My solution. Really enjoyable challenge!
Done.
To my knowlage, Using window function in SQL or Tableau prep is a better method.
This was fun!
Nice. I thought of getting working day 6 with a grouped record id but went for a double sample tool for the giggles
Time taken: 10:13
Here is my solution
If you understand the objective of exercise and data structure, you can easily build this.
Nice Challenge!