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Data engineering interview questions · medium
Normalization: Concepts and its importance
Normalization: Various forms and impact on query performance
Number of Rows in Different Joins
Oozie join condition?
Optimize SQL using indexing and partitioning filters.
Optimize a query fetching customer data with a rolling 6-month sales sum.
Optimize a slow SQL query for a large orders table containing billions of rows.
Optimizing Spark Jobs when they take longer than expected
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