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Complex SQL With Unions Across Tables

Hard
SQL & Data ManipulationJoinsAggregationsUnionsAsked 1 times

Problem

How would you write a complex SQL query using unions to aggregate data across multiple disparate financial tables?

Practicing as: Software Engineer interview at Apollo Global Management

Hi, I'll play your Apollo Global Management interviewer for the Software Engineer role. Candidates describe these interviews as often stressful and hard, 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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