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

Robert Edwardes
Robert Edwardes
15,777 Points
Posted by Robert Edwardes
Robert Edwardes
15,777 Points

Using union all and not getting correct result

I am using Union all with the same number of columns and it is saying that it is not selecting all including duplicates

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,971 Points

Can you show your SQL?

1 Answer

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,971 Points

You are right in using UNION ALL. The following selects all including duplicates:

SELECT Name FROM Fruit UNION ALL SELECT Name FROM Vegetable ORDER BY Name