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Left, Right, and Full Outer Joins are easy!
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Created/Edited - 4/21/2026 by Loic Grange | Alteryx

How To

Learn how to make left, right and full outer joins in Alteryx Designer. 

Environment

Alteryx Designer

Procedure

What does the Join Tool do?

For now, the join tool does a simple inner join with an equal sign. That's it!

In particular:
• R output anchor is NOT the result of a right outer join. I know the R letter can make you think this but it is not.
• Similarly: L output anchor is NOT a left outer join. I know that got me at first too!

 

See the table below that shows you what each does for the “Join” tool:

 

Joins.PNG

 

Look at the online help to learn more: https://help.alteryx.com/current/Join.htm

 

Can I do outer joins with the Join Tool then?

 

Yes! You have to combine it with a Union Tool:

 

- Join Tool + Union of L&J output anchors = Left outer Join,

- Join Tool + Union of R&J output anchors = Right outer Join,

- Join Tool + Union of R+L+J output anchors = Full Join.

 

outerjoins.PNG

 


Look at the online help to learn more: https://help.alteryx.com/current/Join.htm

 


Use "Multiple Join" for Full outer join

 

Multiple Join - Full Outer join.PNG

In Designer, click on the "open example" link that appears once you click on the "Multiple Join" tool for detailed examples.

 

Note: as Alteryx improves the "Join Tool", we might see an easier way to do outer joins. But for now, these are the few options you have.

 

Additional Information
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