Day 8. Various types of comparison of JOIN statements

Throughout the video, the differences between the various JOIN types are highlighted, including the type of data that is returned and how the JOINs handle NULL values. The video also provides examples of each type of JOIN using sample data and demonstrates how the results differ based on the type of JOIN used.

In addition to explaining the different types of JOIN statements, the video also emphasizes the importance of considering the data model when working with JOINs. Specifically, the video highlights the case of a swimming club database, where JOIN statements are used to combine data from multiple tables such as members, trainers, sport clubs and events. By considering the relationships between these tables and the data they contain, database professionals can make informed decisions about which type of JOIN to use and how to optimize their queries. This underscores the fact that JOIN statements are not just technical tools, but also require careful consideration of the underlying data model in order to be used effectively.