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
Identify Repeated High-Severity Accounts
00:00
5 left

Identify Repeated High-Severity Accounts

MediumSQL · PostgreSQL

Problem

Write a SQL query to join incident, customer, and support tables to identify accounts with repeated high-severity incidents in the last 90 days at Cloud Security Services.

Return qualifying customer accounts with at least two high-severity incidents during the period. Include related support activity for those incidents.

Output

  1. One row per qualifying account with account_id, customer_name, high_severity_incident_count, distinct_support_case_count, and latest_support_opened_at
  2. Include accounts with no matching support cases, showing a count of zero and a NULL latest support timestamp
  3. Sort by incident count descending, then account ID ascending
Tablesincidentcustomersupport
Interviewer

Your question is Identify Repeated High-Severity Accounts. 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.