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Top 50 missing values Interview Questions

The most frequently asked missing values questions across all roles and companies, ranked by real interview frequency. Updated daily.

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SQL & Data ManipulationStart here. 41 questions · ~533 min

7-Day Rolling Average Excluding WeekendsHard

Practice

Calculate weekday-only 7-day rolling revenue averages per product while excluding weekends and ignoring missing dates.

missing valuesDate Functionssql query

Microsoft

Amazon Web Services

SQL Client Transactions With Missing ValuesMedium

Practice

Recently asked

Aggregate completed Chase client transactions across three tables while preserving clients without activity and handling NULL values.

missing valuessql query

JPMorganChase

Handling 30% Missing Critical DataMedium

Practice

Audit critical-field completeness by application source and report missing-entry percentages.

missing valuesdata accuracyData Wrangling

American Credit Acceptance

7-Day Rolling Average VisitsMedium

Practice

Calculate daily website visits and their seven-day rolling average using PostgreSQL window functions.

Window Functionsmissing valuesDate Functions

Roofstock

Amplify Marketing Agency

Clean Missing and Corrupted DataHard

Practice

Recently asked

Identify missing and corrupted measurement records across distributed sources using PostgreSQL joins and conditional validation.

missing valuesdatabase managementdata handling

Accenture

LEFT JOIN for Missing RecordsEasy

Practice

Recently asked

Use a LEFT JOIN to return students who have no corresponding marks records.

missing valuesnull handlingJoins

ADP

Sliding Window Max SumMedium

Practice

Recently asked

Calculate each driver's highest three-day earnings total, including missing dates as zero.

missing valuesDate FunctionsSliding Window

DoorDash

Handle Missing Values and DatetimesMedium

Practice

Recently asked

Normalize mixed datetime values and flag missing vehicle, mileage, and timestamp fields in Toyota event data.

missing valuesdata cleaningDate Functions

Toyota

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Machine Learning3 questions · ~39 min

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