Problem
Write a SQL UNION query to combine data from three tables sharing the same unique ID.
Practicing as: Software Engineer interview at National Oilwell VarcoHi, I'll play your National Oilwell Varco interviewer for the Software Engineer 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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