HKT Services Data Analyst Interview Questions
The questions to prepare for a HKT Services Data Analyst interview. Questions from real interview reports rank first. Updated daily.
Tests understanding of SQL join semantics and when to use each join type.
HKT ServicesOptimize a slow PostgreSQL query that aggregates completed transactions while preserving customers with no matching activity.
HKT ServicesExplain how INNER JOIN and LEFT JOIN differ, and when to use each for matched-only versus all-left-row analysis.
HKT ServicesEvaluates your ability to simplify SQL/data logic and maintain correctness under time constraints.
HKT ServicesTests data cleaning decisions and impact on downstream analysis.
HKT ServicesTests query optimization techniques and performance troubleshooting.
HKT ServicesCalculate each customer's 30-day rolling engagement average using a PostgreSQL window function.
Compute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.
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Tests ownership, stakeholder management, and how clearly you can explain a past data science project with measurable impact.
HKT ServicesTests communication, ownership, and stakeholder management when translating technical complexity into actionable business understanding.
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