Problem
How would you use SQL window functions to calculate a running total or rank users by activity over time?
Practicing as: Data Scientist interview at SparkBeyondHi, I'll play your SparkBeyond interviewer for the Data Scientist role. Candidates describe these interviews as mostly positive and moderately difficult, so expect me to be friendly and conversational. Take your time with the question above and answer like we're in the room.
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