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Interview questions · medium
What is the difference between repartition and coalesce in Apache Spark?
What is Adaptive Query Execution (AQE) in Spark 3.x, and how does it improve performance?
Grouping and aggregation functions?
Integration of Snowflake with external data sources such as S3, GCS, and Blob Storage?
Self-joins to compare employee salaries?
Broadcast Joins and Shuffle Merge Joins?
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