Problem
Write a SQL query to calculate the rolling 30-day average transaction volume for a specific subset of user accounts at SoFi.
Practicing as: Data Engineer interview at SoFiHi, I'll play your SoFi interviewer for the Data Engineer role. Candidates describe these interviews as mixed and moderately difficult, so expect me to be professional and fair. Take your time with the question above and answer like we're in the room.
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