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New Interview Questions: August 2026

Questions added to the Dataford question bank in August 2026, ranked by how often they are asked in real interviews.

100questions
~38htotal time
802companies covered
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1
SQL & Data ManipulationStart here. 50 questions · ~1125 min
SQL Window Functions Moving AverageMedium
Practice
Recently asked

Calculate a three-day moving average of active-client revenue using aggregation and SQL window functions.

Window FunctionsData AnalysissqlEEvalueserveSShyena Tech YarnsAATB Financial
Rolling Average with SQL WindowsMedium
Practice
Recently asked

Calculate each active RpmGlobal Enterprise Planning user's 30-day rolling average of daily activity.

TavantRpmglobalTwo Six Technologies
SQL Window Functions Rolling AverageMedium
Practice
Recently asked

Calculate three-day rolling average sales by region using aggregation, joins, and PostgreSQL window functions.

Window FunctionssqlAAreteSSweetwaterKohl's
7-Day Rolling Average ExportsMedium
Practice
Recently asked

Calculate a 7-day rolling average of Adobe Acrobat document exports using a window function.

Data AnalysisAggregationsAbbottAdobeOOura Ring
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2
Coding50 questions · ~1125 min
Bubble Sort and String ReversalEasy
Practice
Recently asked

Reverse a string using a two-pointer swap approach in linear time.

string manipulationDassault SystèmesAArctic WolfMaybank Singapore
Cosine Similarity ImplementationEasy
Practice
Recently asked

Implement cosine similarity for two numeric vectors using dot product and vector norms.

implementationClickhouseSocureEXL Service
In-Place String ReversalEasy
Practice
Recently asked

Implement in-place reversal and swapping without extra memory using two pointers or arithmetic/XOR.

string manipulationBoeingHealth Care Solutions At HomeSuperAGI
Longest Palindromic SubstringHard
Practice
Recently asked

Find the earliest longest palindromic substring using Manacher's linear-time string algorithm.

Dynamic ProgrammingRobert SlackFFarm FamilyStarr Companies
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