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

Databases Querying Relational Databases Subqueries Using a Subquery to Create a Temporary Table (Part 2)

Cayo Estevao
Cayo Estevao
2,048 Points

Why location id is = 1?

Why st louis receive location id = 1, and columbia location id = 2?

1 Answer

Steven Parker
Steven Parker
231,269 Points

ID numbers often have no relationship to the other data.

Commonly, the ID number is assigned automatically by the database when the record is first created. So while it gives a convenient way of uniquely identifying records, it may have no other meaning than just the order that the record was added.