TEKsystems Data Analyst Interview Questions
The questions to prepare for a TEKsystems Data Analyst interview. Questions from real interview reports rank first. Updated weekly.
Design and test row-level security for a multi-tenant Power BI workspace with tenant-aware data access and auditability.
TEKsystemsApproach for finding and fixing a slow dashboard pipeline, from source ingestion to warehouse queries.
TEKsystemsTests data modeling skills for complex, multi-facility traceability and reporting requirements.
TEKsystemsExplain how to tune slow PostgreSQL queries on multi-million-row tables using indexes, execution plans, joins, and partitioning.
TEKsystemsExplain how INNER JOIN and LEFT JOIN differ, and when to use each for matched-only versus all-left-row analysis.
TEKsystemsTests data quality practices and preparation steps for reliable BI outputs.
TEKsystemsFind the second highest distinct employee salary from a single table, returning NULL if it does not exist.
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C3 AIReturn the top 3 open TEKsystems requisitions by priority using WHERE, ORDER BY, and LIMIT.
AppsFlyerTEKsystemsRank TEKsystems users by monthly activity using date grouping, aggregation, joins, and ROW_NUMBER().
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Tests BI design skills for operational KPIs and stakeholder-ready metric modeling.
TEKsystemsTests ability to define and compute forecasting KPIs and translate them into inventory decisions.
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