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Optimize Slow SQL Aggregations

Hard
SQL & Data Manipulationperformancequery optimizationAggregations

Problem

How would you optimize a slow-running SQL query that aggregates millions of document-processing events for Nanonets?

Practicing as: Business Analyst interview at Nanonets

Hi, I'll play your Nanonets 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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