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
SQL for Daily Store Revenue
00:00
5 left

SQL for Daily Store Revenue

MediumSQL · PostgreSQL

Problem

Write a SQL query to summarize daily orders by store, including total orders, total revenue, and average order value.

Use the provided stores and orders tables. Include only orders associated with a known store, and preserve the order date as the daily reporting date.

Output

  1. One row per store and order date.
  2. Columns: store_name, order_date, total_orders, total_revenue, and average_order_value.
  3. Sort by order_date ascending, then store_name ascending.

Schema

stores
ColumnTypeDescription
store_idPKINTUnique store identifier
store_nameVARCHAR(100)Display name of the store
orders
ColumnTypeDescription
order_idPKINTUnique order identifier
store_idINTStore associated with the order
order_dateDATEDate on which the order was placed
order_totalDECIMAL(10,2)Total monetary value of the order
Tablesstoresorders
Interviewer

Your question is SQL for Daily Store Revenue. 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.