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
Basic SQL and Python Prep
00:00
5 left

Basic SQL and Python Prep

EasySQL · PostgreSQL

Problem

Basic SQL questions and prepare for basic python questions.

For the SQL portion, write a query using the orders table to identify the five customers with the highest total order amount during January 2024.

Output

  1. One row per customer, with columns customer_name and total_spent.
  2. Include only January 2024 orders and return the five highest totals.
  3. Order by total_spent descending, then customer_name ascending for ties.

Schema

orders
ColumnTypeDescription
order_idPKINTUnique order identifier
customer_nameVARCHAR(100)Customer name
amountNUMERIC(10,2)Order amount
order_dateDATEDate when the order was placed
Tablesorders
Interviewer

Your question is Basic SQL and Python Prep. 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.