Interview Mode

Practice realistic SQL and PySpark coding interviews — timed, curated questions graded by the same engine as regular practice.

SQL Interview

3 questions · 30 minutes

Joins, aggregation and window-function patterns commonly seen in SQL interview screens.

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PySpark Interview

3 questions · 30 minutes

DataFrame operations, joins and window functions for data engineering interview screens.

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Each session is a fixed set of 3 questions (easy, medium, hard) with a 30-minute timer, graded by the exact same engine as normal practice. Hints and solutions are unavailable while a session is active, and available again for review once it ends.