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 jeremyguida
jeremyguida
8,211 Points

Task 1 of 6: SQL Set Operations

Pretty simple problem - return a union of two tables (vegetable and fruit) with unique values. Each table has two columns, fruitid, name and vegetableid, name. What am I doing wrong here?

I've tried using *, and I've tried specifying the table before each column (Vegetable.VegetableID, etc.). I receive the error: SQL queries did not return a UNION.

Select VegetableID, Name FROM Vegetable UNION Select FruitID, Name FROM Fruit;

1 Answer

Steven Parker
Steven Parker
231,184 Points
Steven Parker
Steven Parker
231,184 Points

The instructions for task 1 say "Create a distinct result set of fruit and vegetable names."

So just select "Name" from both tables (no ID's).

jeremyguida
jeremyguida
8,211 Points

THANK YOU! I should read more carefully!