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 Joining Table Data with SQL JOIN Queries

Posted by xczurymqdj
xczurymqdj
2,289 Points

can i please get some help with this challenge task 4 join queries?

SELECT ModelName
FROM Model
WHERE ModelID IN
   (SELECT ModelID FROM Car WHERE StickerPrice > 30000);

this is my code that i am trying. Can someone please let me know what im doing wrong.

Irina Perevoznik
Irina Perevoznik
2,148 Points

Hi, you have to use JOIN, not IN as a subquery. I can't find the task, but looks like you have to try something like this:

SELECT m.ModelName, c.ModelID FROM Model AS m INNER JOIN Car AS c ON m.(ADD HERE SOME PRIMARY KEY FROM THE MODEL TABLE, EX. ID) = c.ModelID WHERE c.StickerPrice > 30000;