Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

PHP Integrating PHP with Databases Using Relational Tables Querying Multiple Tables with JOIN

Would it be better to use LEFT OUTER JOIN to join Genres table?

I understand the reason Alena used only an INNER JOIN because all of the genre fields are supposed to be completed when updated a record, but what would happen if for some reason the person who entered the record forgot to assign a genre?

For example, what would happen if we're on the details page for Elvis Forever, which is media_id 9, and if the person who uploaded the information forgot to enter the genre? Would the genre for Elvis have a NULL value, and would the Would the page break if we try to load a page with a NULL genre value?

Forgive me for asking, as I am new to this and may be wrong in my thinking, but am simply wondering if there is any validity to my question?