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Compare Performance Across Units

Medium
SQL & Data ManipulationJoinsRankingAggregations

Problem

How would you use SQL to compare performance across multiple business units?

Practicing as: Data Analyst interview at Bank Of America Merrill Lynch

Hi, I'll play your Bank Of America Merrill Lynch interviewer for the Data Analyst role. Answer the question above like we're in the room, and I'll respond the way a real interviewer would.

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