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Combined Contact Directory

intermediate~8 min20 pts
📊 View Insights

Problem

Build a single directory combining customers from USA and employees from Canada for an upcoming North-America summit.

Schema: Customer

ColumnType
CustomerIdINTEGER (PK)
FirstNameTEXT NOT NULL
LastNameTEXT NOT NULL
CompanyTEXT
CountryTEXT
EmailTEXT NOT NULL
SupportRepIdINTEGER (FK → Employee)

Schema: Employee

ColumnType
EmployeeIdINTEGER (PK)
LastNameTEXT NOT NULL
FirstNameTEXT NOT NULL
TitleTEXT
ReportsToINTEGER (FK → Employee)
BirthDateTIMESTAMP
HireDateTIMESTAMP
CountryTEXT

Requirements:

  • Return three columns: FullName, Country, RoleType
  • From Customer: only customers with Country = 'USA'; RoleType = 'Customer'
  • From Employee: only employees with Country = 'Canada'; RoleType = 'Manager' if their Title contains 'Manager' (case-insensitive), else 'Staff'
  • Sort by RoleType ascending, then FullName ascending
UNION ALLCASE WHENAliasesWHEREORDER BY
📊
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SQL Editor

Run your code to see the result here.

Topfolio

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courses

  • Career Tracks
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  • Best Data Analyst Course in India
  • SQL Fundamentals
  • SQL Advanced
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  • Micro Free Courses

practice

  • SQL Fundamentals Interview Test
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  • All Practice Tests

resources

  • How to Become a Data Analyst
  • SQL Interview Questions
  • Data Analyst Salary Guide
  • Free Datasets for Practice
  • SQL vs NoSQL Guide
  • Data Analyst vs Data Engineer vs Data Scientist

employers

  • Enterprise Screening
  • AI Proctoring Demo
  • Volume Pricing
  • Employer Portal

company

  • About
  • Terms
© 2026 Topfolio. All rights reserved.Made with ❤️ for aspiring analysts