Job-Ready SQL in an Afternoon - Self Joins

The video tutorial explains the concept of joins in SQL, focusing on self joins and how they can be used to analyze data. It covers using multiple conditions in join statements and provides a practical example using invoice data to demonstrate how to find tracks often bought together. The tutorial also discusses grouping and aggregation techniques to analyze purchase patterns.

What is a self join and how is it different from a regular join?

Explain the importance of using multiple conditions in a join statement.

In what scenarios might you want to find tracks that are often bought together?

Describe how to use a group by statement in conjunction with self joins.

What is the significance of ordering results in a query involving self joins?

What are the potential issues when joining a table onto itself without additional conditions?

How can we use self joins to analyze purchasing patterns?