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Kaplan Data Engineer Interview Questions
The questions to prepare for a Kaplan Data Engineer interview. Questions from real interview reports rank first. Updated daily.
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SQL & Data ManipulationStart here. 2 questions + 2 drills · ~44 min
SQL Query PracticeEasy
Practice
Return the second-highest distinct non-null salary from a single employee table.
null handlingsqldatabase queryingKKaplan
Explain SQL Join TypesEasy
Explain INNER, LEFT, RIGHT, FULL OUTER, CROSS, and SELF JOINs with examples and when to use each.
JoinsData WranglingGroup ByKKaplan
Window Functions for Rolling MetricsMedium
Practice
Practice drillExplain window functions and calculate a rolling average for time-series measurements.
Window Functionsanalytics toolsDate FunctionsccausaLensLLANXESSEElastic
Writing a Simple SQL QueryEasy
Practice
Practice drillExtract active customer records with selected fields and deterministic ordering.
null handlingJoinsGroup By
Bosch Building Technologies
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2
Behavioral & Leadership1 question · ~12 min
Basic Troubleshooting and Time ManagementEasy
Tests troubleshooting judgment, time management, prioritization, and ownership under pressure.
behavior under pressuretime managementattention managementKKaplan
The finish line: interview-readyComplete all 3 questions plus 2 hands-on drills to finish this plan.