Learning track

Interview Prep

Practise for data engineering interviews: SQL puzzles and traps, Spark, streaming, cloud, governance, system design and behavioural rounds.

In this track

2 guides

Each guide is a complete reference with explanations, code and diagrams.

Joins, self-joins and hierarchies, NULL traps, window functions, DML, performance and classic puzzles.

Spark, streaming, AWS, Azure, Databricks, governance, system design and behavioural questions.

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