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NTT DATA Data Analyst Interview Questions

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

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1
SQL & Data ManipulationStart here. 6 questions + 3 drills · ~78 min
NULLs in Aggregate MetricsEasy
Recently asked

Explain how PostgreSQL aggregate functions treat NULL values and when to use COALESCE to control results.

null handlingCase WhenAggregationsNTT DATA
Explain Full Outer vs Left JoinMedium
Recently asked

Explain how FULL OUTER JOIN and LEFT JOIN differ when reconciling customer records across systems.

JoinsData WranglingCase WhenNTT DATA
Optimizing Slow PostgreSQL Research QueriesMedium
Recently asked

Explain how you diagnosed and optimized a slow PostgreSQL query using execution plans, indexing, and query rewrites.

JoinsData WranglingAggregationsNTT DATA
Second and Nth Highest ValuesMedium
Practice
Recently asked
Practice drill

Find the second highest distinct salary and adapt the query to retrieve any requested salary rank.

Data Manipulationsqldatabase queryingSnowflake ComputingKKGISLSBS
SQL Joins and Use CasesEasy
Practice
Practice drill

Identify common SQL join types and explain when each is appropriate.

Joinsdatabase queryingjoin typesNtt Data Europe & Latamddata consultancyNTT DATA
Second Highest Without AggregatesHard
Practice
Practice drill

Find the second highest salary in each department without using aggregate functions.

SubqueriesRankingSelf-JoinsCredit GenieDevoteamCisco Restaurant + Bar
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2
Behavioral & Leadership39 questions · ~312 min
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3
More topics5 questions · ~40 min
Implement Power BI Row-Level SecurityHard
Recently asked

Design and test row-level security for a multi-tenant Power BI workspace with tenant-aware data access and auditability.

InfrastructureData ModelingQualityNTT DATA
Investigating Sales DropsHard
Recently asked

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

NTT DATA
ML and Time Series FundamentalsMedium
Recently asked

Assesses baseline familiarity with modern ML concepts and time series approaches.

transformersMachine LearningNTT DATA
Power BI Performance for MillionsMedium
Recently asked

Tests performance-focused Power BI design choices for large datasets.

performancepower biData ModelingNTT DATA
Choosing the Right VisualizationEasy
Recently asked

Assesses your ability to map metrics to effective visuals and business interpretation.

KPIDiagnosisNTT DATA

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