Problem
Given a table of user ad impressions and a table of user clicks, write a query to calculate the click-through rate (CTR) for each publisher.
Practicing as: Business Analyst interview at Lg Ad SolutionsHi, I'll play your Lg Ad Solutions interviewer for the Business 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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