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Top 50 Aggregations Interview Questions

The most frequently asked Aggregations questions across all roles and companies, ranked by real interview frequency. Updated weekly.

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Analyzing Large Datasets with SQL
Easy

Explain practical SQL methods for analyzing large datasets, including filtering, aggregation, sampling, and performance-aware query design.

JoinsData WranglingAggregations
Recently asked
Opex AnalyticsAutonomous SolutionsGenesco
Top Customers by Sales Revenue
Easy

Use GROUP BY and SUM to rank the top 10 customers by total revenue from a single sales table.

RankingGroup ByAggregations
Recently asked
Thornburg InvestmentSageCredit Genie
SQL Insights for Dashboard Reporting
Easy

Explain how SQL prepares clean, aggregated data for dashboards and how to describe business impact from visualization work.

JoinsData WranglingAggregations
Recently asked
Housecall ProThe University of KansasSalesforce
Running Totals for Sales Reporting
Medium

Explain how to calculate cumulative totals in SQL using window functions, ordering, and optional pre-aggregation.

Window FunctionsDate FunctionsRunning Totals
Recently asked
VanguardAlabama StaffingAnalog Devices
Analyze Large Dataset Trends in SQL
Easy

Explain how SQL replaces Excel for trend analysis on 100,000+ rows using aggregation, date grouping, and filtering.

PivotData WranglingAggregations
Recently asked
Starcom Mediavest Group GermanyGiant EagleGenesco
Pivot Reports in SQL
Easy

Explain how Excel-style pivot tables, aggregations, and financial calculations translate into SQL reporting workflows.

Data WranglingCase WhenAggregations
Recently asked
Los Alamos National LaboratoryHealth CatalystRocket
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