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Prep plan
Updated weekly · Last refresh Oct 17ReliaQuest Data Analyst Interview Questions
The questions to prepare for a ReliaQuest Data Analyst interview. Questions from real interview reports rank first. Updated daily.
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SQL & Data ManipulationStart here. 1 question + 3 drills · ~38 min
Understanding Common Table Expressions (CTEs)Medium
Explain what CTEs are and their advantages in SQL queries.
CTEs
ReliaQuest
ReliaQuestSQL Window Ranking Per HostMedium
Practice
Practice drillReturn the highest-severity security alert for each host using a window function and deterministic tie-breaking.
Window FunctionsData Manipulationsql queryReliaQuest
ReliaQuestHandling Missing DataMedium
Practice
Practice drillStandardize missing observation fields with fallback values, missingness flags, and ordered output.
Window Functionsmissing valuesdata cleaning
Eversource Energy
Cincinnati Children's Hospital
Adtalem Global Education
Eversource EnergyCincinnati Children's HospitalAdtalem Global EducationOptimize a Slow SQL QueryHard
Practice
Practice drillRewrite a slow PostgreSQL loan payment query to reduce scanned rows while preserving the required aggregated results.
database optimizationJoinsData Wrangling
AmeripriseEEltro Cyberchrome Private
EnergyHub
AmeripriseEEltro Cyberchrome PrivateEnergyHub2
Behavioral & Leadership1 question · ~8 min
SQL Join Types and Use CasesMedium
Assesses SQL join understanding and practical decision-making for data analysis.
cultural fitReliaQuest
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The finish line: interview-readyComplete all 2 questions plus 3 hands-on drills to finish this plan.