Problem
Walk me through how you would structure a SQL query to identify underperforming ad campaigns from a multi-table database.
Practicing as: Business Analyst interview at Publicis Groupe Holdings B.VHi, I'll play your Publicis Groupe Holdings B.V interviewer for the Business Analyst 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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