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 Set Operations Set Operations

Posted by Katie Martens
Katie Martens
1,962 Points

Need the WHERE clause?

I thought I needed a WHERE clause in both queries, and I know I need the UNION set operation, but wasn't sure how I'm messing up. My code is copied and pasted below:

SELECT Name FROM Fruit WHERE Name >= 'A' and Name < 'K' UNION SELECT Name FROM Vegetable WHERE Name >= 'A' and Name < 'K';

1 Answer

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

The instructions say to include names that begin with "K", so you need to set your upper limit to the next letter ("L"). Also, you don't need to exclude names starting with letters before "A" (since there aren't any).

SELECT Name FROM Fruit WHERE Name < 'L' UNION SELECT Name FROM Vegetable WHERE Name < 'L';