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Updated weekly · Last refresh Aug 30
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data consultancy Data Analyst Interview Questions

The questions to prepare for a data consultancy Data Analyst interview. Questions from real interview reports rank first. Updated weekly.

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1
SQL & Data ManipulationStart here. 6 questions + 3 drills · ~78 min
Handling Missing Data in SQLEasy
Recently asked

Explain how to identify, assess, and handle missing values in SQL using NULL checks, COALESCE, and validation logic.

Data WranglingCase WhenQualityddata consultancy
Power BI for Business ProblemsMedium
Recently asked

Tests your ability to translate business needs into effective BI reporting and insights.

data visualizationpower biddata consultancy
Data Cleaning and Validation ProcessMedium
Recently asked

Tests your data quality practices to ensure reliable analysis outcomes.

data preparationdata cleaningdata validationddata consultancy
SQL Joins in Complex ModelsMedium
Recently asked

Tests your SQL join knowledge and ability to apply it correctly in complex analytical models.

Data Modelingdatabase conceptsddata consultancy
Optimizing Slow Query PerformanceHard
Recently asked

Tests your query optimization skills and practical troubleshooting approach.

query optimizationsqlddata consultancy
Detect Duplicate Records in SQLMedium
Practice
Practice drill

Identify duplicate active Finacle transactions using a CTE, grouped business keys, and a customer lookup.

sql querydata integrityFinacleddata consultancyDDXC
Autonomous vs Manual Drive TimeHard
Practice
Practice drill

Compute per-vehicle daily autonomous vs manual seconds from state-change logs using LEAD and conditional aggregation.

JoinsData WranglingGroup By
Top Customers by Net SalesMedium
Practice
Practice drill

Compute top 10 customers by net sales using joins and aggregations, ordering by revenue with deterministic tie-breaking.

SubqueriesJoinsData WranglingGain DigitalTCSZest AI
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2
Behavioral & Leadership22 questions · ~176 min
Prioritizing Across Competing ProjectsMedium
Recently asked

Tests prioritization under pressure across multiple projects, including time management, stakeholder communication, and ownership of trade-offs.

time managementmultitaskingPrioritizationddata consultancy
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3
More topics2 questions · ~16 min
Investigating Sales DropsHard

Evaluates your approach to root-cause analysis using data to drive business decisions.

ddata consultancy
Salary Expectation ScenarioMedium

Evaluates quantitative reasoning and ability to interpret compensation-related scenarios.

compensationsalaryddata consultancy

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