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 weekly.
Explain the differences between WHERE and HAVING clauses in SQL and when to use each.
NTT DATAExplain how PostgreSQL aggregate functions treat NULL values and when to use COALESCE to control results.
NTT DATAExplain how you diagnosed and optimized a slow PostgreSQL query using execution plans, indexing, and query rewrites.
NTT DATAFind the second highest salary in each department without using aggregate functions.
Credit Genie
Devoteam
Cisco Restaurant + BarUse joins, monthly aggregation, and window functions to compute running revenue totals and customer rank by region.
NTT DATA
AppfolioCompute per-vehicle daily autonomous vs manual seconds from state-change logs using LEAD and conditional aggregation.
Evaluates your approach to root-cause analysis using data to drive business decisions.
NTT DATAAssesses your ability to map metrics to effective visuals and business interpretation.
NTT DATADesign and test row-level security for a multi-tenant Power BI workspace with tenant-aware data access and auditability.
NTT DATAAssesses baseline familiarity with modern ML concepts and time series approaches.
NTT DATATests performance-focused Power BI design choices for large datasets.
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