Dataford
Interview QuestionsInterview GuidesExperiencesCoaching
New
Pricing
Get started
Dataford
Popular roles
Software EngineerData AnalystData ScientistData EngineerBusiness AnalystAI EngineerMachine Learning EngineerProduct Manager
Browse
Browse All RolesEvery role hub, from analyst to MLBrowse All CompaniesCompany-specific interview loopsAll Interview GuidesThe full guide library
Top questions by role
Software EngineerData AnalystData ScientistData EngineerBusiness AnalystAI EngineerMachine Learning EngineerProduct Manager
Top questions by skill
SQLPythonStatisticsMachine LearningA/B TestingSystem DesignGenerative AIProduct SenseMetricsBehavioral
Browse all questions →Try a mock interview
Experiences
Practice
Mock InterviewsTimed interview simulations with feedbackCoaching1:1 coaching with people at your target companiesSuccess PathYour 6-week structured planModulesCurated lessons by topicWebinarsTalks from ex-Big Tech data leadsPlaygroundA free-form scratch editor
Learn
BlogInterview strategy and career adviceTech Job Market ReportHiring trends across data and AI rolesFor UniversitiesDataford for career centersAbout DatafordWho we are and how we build
Pricing
Build my plan
Top Games Per Region
00:00
5 left

Top Games Per Region

MediumSQL · PostgreSQL

Problem

Write a SQL query using window functions to identify the top three most-played games per region.

Use total play minutes as the measure of play activity. Include only games with recorded sessions, return up to three games per region, and break ties alphabetically by game name.

Output

  1. One row per selected region and game, with region_name, game_name, total_play_minutes, and play_rank.
  2. Include ranks 1 through 3 where available.
  3. Order by region_name, then play_rank.

Schema

regions
ColumnTypeDescription
region_idPKINTUnique region identifier
region_nameVARCHAR(100)Display name of the PlayStation Global region
games
ColumnTypeDescription
game_idPKINTUnique game identifier
game_nameVARCHAR(150)Game title
play_sessions
ColumnTypeDescription
session_idPKINTUnique play session identifier
region_idINTRegion associated with the session
game_idINTGame played during the session
minutes_playedINTMinutes played during the session
Tablesregionsgamesplay_sessions
Interviewer

Your question is Top Games Per Region. Start with the requirements and the three tables in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

You need to log in / sign up to run or submit.
CodePostgreSQL
Sign up free to run your codeLog inLn 1
Run your query to see results here.