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PySpark transformations at scale.

3 questions

SQL · 1PySpark · 2

Status	Title	Technology	Topic	Acceptance	Difficulty
○	20.Latest price as of each order	SQL	Data modeling	20.0%	Medium
○	85.The basket of each order	PySpark	Aggregation	—	Medium
○	90.Day-1 and day-7 retention by cohort	PySpark	Window functions	—	Medium

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