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
Load Data with Copy Into
00:00
5 left

Load Data with Copy Into

EasySQL · PostgreSQL

Problem

Write a copy into command to load data from external stage to snowflake table.

Asked in the Technical round 1 stage. Because the target database is PostgreSQL, use the provided staging table as the external-stage representation and load valid rows into the target table.

Output

  1. Return project_id, client_name, service_line, project_date, billed_amount, and project_status for rows loaded by the statement.
  2. Ignore staging rows with a NULL or blank project_id.
  3. Return rows ordered by project_id ascending.

Schema

external_stage_advisory_projects
ColumnTypeDescription
project_idVARCHAR(20)Project identifier received from the external source
client_nameVARCHAR(100)Client name from the source file
service_lineVARCHAR(80)Advisory service line
project_dateVARCHAR(10)Project date represented as YYYY-MM-DD text
billed_amountVARCHAR(30)Billed amount represented as text
project_statusVARCHAR(30)Project lifecycle status
advisory_projects
ColumnTypeDescription
project_idPKINTEGERUnique project identifier
client_nameVARCHAR(100)Client name
service_lineVARCHAR(80)Advisory service line
project_dateDATEProject date
billed_amountNUMERIC(12,2)Amount billed for the project
project_statusVARCHAR(30)Project lifecycle status
Tablesexternal_stage_advisory_projectsadvisory_projects
Interviewer

Your question is Load Data with Copy Into. 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.