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
Window Functions for Monthly Application Ranks
00:00
5 left

Window Functions for Monthly Application Ranks

MediumSQL · PostgreSQL

Problem

Write a SQL query using window functions to compute each student's application count rank within their university by month on Handshake - stryder.

Use the provided student and application records. Include students with applications only, and treat each application record as one application.

Output

  1. One row per student, university, and application month.
  2. Columns: university_id, university_name, application_month, student_id, student_name, application_count, and application_rank.
  3. Rank highest application counts first, with tied counts sharing the same rank.
  4. Order by university_id, application_month, application_rank, and student_id.

Schema

students
ColumnTypeDescription
student_idPKINTUnique student identifier
student_nameVARCHAR(100)Student's display name
university_idINTUniversity identifier
university_nameVARCHAR(150)University name
applications
ColumnTypeDescription
application_idPKINTUnique application identifier
student_idINTStudent associated with the application
applied_atTIMESTAMPTimestamp when the application was submitted
Tablesstudentsapplications
Interviewer

Your question is Window Functions for Monthly Application Ranks. Start with the requirements and the two 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.