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Real questions from top companies · medium
How do partitions improve query performance in fact tables?
How do tumbling window triggers ensure data consistency in batch processing?
How do you find duplicates in a table based on one or two columns?
How do you handle NULL values in a SQL query to avoid incorrect results?
How do you monitor and debug skewed partitions?
How do you monitor consumer lag in Kafka, and how can you reduce it?
How do you optimize partitioning when dealing with large datasets?
How do you remove duplicates with partitioning?
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