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PhysicsWallah Data Analyst Interview Questions

The questions to prepare for a PhysicsWallah Data Analyst interview. Questions from real interview reports rank first. Updated daily.

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1
SQL & Data ManipulationStart here. 2 questions + 2 drills · ~42 min
Debug and Optimize Slow SQLMedium
Practice
Recently asked

Task A reporting query at a commerce platform summarizes recent orders for active customers, but the production version is slow. Write a PostgreSQL query t...

database optimizationlarge datasetsdatabase queryingPPhysicsWallah
Explain SQL Join TypesEasy
Recently asked

Explain INNER, LEFT, RIGHT, FULL OUTER, CROSS, and SELF JOINs with examples and when to use each.

JoinsData WranglingGroup ByPPhysicsWallah
SQL Category Averages and Record CountsEasy
Practice
Practice drill

Demonstrate how SQL supports analysis by filtering records and summarizing positive measures by category.

JoinsData WranglingGroup ByEPAM SystemsWarner Bros.
Indexing and Query PerformanceMedium
Practice
Practice drill

Write a selective PostgreSQL ticket query and explain how indexing can improve its filtering and sorting performance.

database optimizationJoinsData WranglingZendeskFactored

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2
Behavioral & Leadership2 questions · ~22 min
Prioritizing Under Deadline PressureMedium
Recently asked

Tests prioritization under pressure, ownership, and stakeholder management when several urgent demands compete at once.

stress managementperformance under pressureresiliencePPhysicsWallah
Explaining Analysis to Non-Technical StakeholdersEasy
Recently asked

Tests communication of complex data to non-technical stakeholders, including clarity, stakeholder management, and actionable storytelling.

Influence Without AuthorityStakeholder ManagementCommunicationPPhysicsWallah
The finish line: interview-readyComplete all 4 questions plus 2 hands-on drills to finish this plan.