Problem
Write a SQL query to find the second-highest transaction amount for each user, handling cases where users have fewer than two transactions.
Practicing as: Data Analyst interview at OneHi, I'll play your One interviewer for the Data Analyst role. Candidates describe these interviews as often stressful and moderately difficult, so expect me to be direct and to the point. Take your time with the question above and answer like we're in the room.
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