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.
👀 Preview
🎯 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
