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Real questions from top companies in SQL · medium

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1

Normalization: Concepts and its importance

SQLmedium
2

Normalization: Various forms and impact on query performance

SQLmedium
3

Number of Rows in Different Joins

SQLmedium
4

Oozie join condition?

SQLmedium
5

Optimize SQL using indexing and partitioning filters.

SQLmedium
6

Optimize a query fetching customer data with a rolling 6-month sales sum.

SQLmedium
7

Optimize a slow SQL query for a large orders table containing billions of rows.

SQLmedium
8

Optimizing Spark Jobs when they take longer than expected

SQLmedium

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