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Select employees and managers with inner join

Select employees and managers with inner join

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Select employees and managers with inner join

USING MYSQL

 

The Employee table has the following columns:

  • ID - integer, primary key
  • FirstName - variable-length string
  • LastName - variable-length string
  • ManagerID - integer

Write a SELECT statement to show a list of all employees' first names and their managers' first names. List only employees that have a manager. Order the results by Employee first name. Use aliases to give the result columns distinctly different names, like "Employee" and "Manager".

Hint: Join the Employee table to itself using INNER JOIN.

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