Mastering Database Joins for Personnel Data

Introduction

In this project, you will learn how to use join queries to retrieve pertinent data from the emp table, dept table, and salgrade table in the personnel database.

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🎯 Tasks

In this project, you will learn:

• How to access the MySQL database and import the personnel data
• How to use an equi-join (inner join) to retrieve the names, hire dates, and corresponding department names from the employee table
• How to use a non-equi join to retrieve the names, salaries, and corresponding salary grade information for all employees from the employee table
• How to use a self-join to retrieve the superior information of the employee named "SMITH"
• How to use a left outer join to retrieve all department information and their corresponding employee information

🏆 Achievements

After completing this project, you will be able to:

• Understand the different types of join queries and when to use them
• Retrieve and manipulate data from multiple tables in a database using join queries
• Apply advanced SQL concepts to solve complex data retrieval problems