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Optimizing Queries at Scale

Hard
SQL & Data ManipulationPerformance Tuningindexespartitioning

Problem

How do you optimize query performance on a database containing billions of rows of historical data?

Practicing as: Data Engineer interview at Micro1

Hi, I'll play your Micro1 interviewer for the Data Engineer 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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