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
Single-Line SQL: Retrieve Employee Names
00:00
5 left

Single-Line SQL: Retrieve Employee Names

EasySQL · PostgreSQL

Problem

Phenom needs a simple employee directory query for its internal Employee Experience platform. Write a single-line PostgreSQL query that retrieves the name of every employee from the employee table.

Requirements

  1. Return one column containing all employee names.
  2. Sort the names alphabetically so the output is deterministic.
  3. Do not filter employees by department or employment status.

Schema

employee
ColumnTypeDescription
employee_idPKINTEGERUnique employee identifier
employee_nameVARCHAR(100)Employee's full name
departmentVARCHAR(80)Employee's department, if assigned
employment_statusVARCHAR(30)Current employment status
work_emailVARCHAR(150)Employee's work email address
Tablesemployee
Interviewer

Your question is Single-Line SQL: Retrieve Employee Names. Start with the requirements and the one table 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.