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Optimum Solutions Pte Data Analyst Interview Questions

The questions to prepare for a Optimum Solutions Pte Data Analyst interview. Questions from real interview reports rank first. Updated weekly.

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1
SQL & Data ManipulationStart here. 4 questions + 3 drills · ~62 min
Optimize Large PostgreSQL Query PerformanceMedium

Explain how to tune slow PostgreSQL queries on multi-million-row tables using indexes, execution plans, joins, and partitioning.

Performance Tuningquery optimizationsqlOptimum Solutions Pte
Customer Orders: LEFT vs INNER JOINEasy

Explain how INNER JOIN and LEFT JOIN differ, and when to use each for matched-only versus all-left-row analysis.

JoinsData WranglingGroup ByOptimum Solutions Pte
Choosing Window FunctionsMedium

Tests understanding of window functions and when to apply them correctly.

Window FunctionssqlAggregationsOptimum Solutions Pte
Deduplicating Transactional RecordsMedium

Tests SQL skills for safe deduplication and preserving data integrity.

deduplicationtransactionsdata integrityOptimum Solutions Pte
SQL Duplicate Record DetectionEasy
Practice
Practice drill

Find duplicate American Institutes for Research assessment submissions using a CTE, GROUP BY, HAVING, and joins.

deduplicationsqldata integrityAmerican Institutes for ResearchMacy's
Top Daily Rides by VehicleMedium
Practice
Practice drill

Rank the top 3 completed rides per vehicle per day using joins, a CTE, and ROW_NUMBER.

Window FunctionsJoinsData WranglingWaymo
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
2
Behavioral & Leadership13 questions · ~104 min
Aligning Docs With Agile SprintsMedium

Tests Agile execution for technical writers: sprint alignment, prioritization, and cross-functional coordination under changing requirements.

ScrumAgiledocumentationOptimum Solutions Pte
Making Analytics Dashboards IntuitiveMedium

Tests communication and stakeholder management through a dashboard project, with emphasis on simplifying complexity for non-technical users.

Stakeholder ManagementCommunicationdashboardingOptimum Solutions Pte
Explaining Technical Issues ClearlyMedium

Tests whether you can translate technical complexity into business-relevant language for non-technical stakeholders and drive action.

Stakeholder ManagementCommunicationtechnical explanationOptimum Solutions Pte
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3
More topics1 question · ~8 min
Cost-Effective Partition QueriesMedium

Tests practical experience with partitioning and cost-aware query design.

partitioningOptimum Solutions Pte

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