Hello everyone,
I'm new in Metabase and I'm facing an issue.
Do you have any idea why I can't make an average aggregation in this case ?
But if I turn this into a model, now I can add an average aggregation on the amount.
Thanks for your answers 
Hi @ladislas14
I'm guessing that you are seeing this issue:
https://github.com/metabase/metabase/issues/12248 - upvote by clicking 
on the first post
1 Like
Hi @flamber,
Thank you very much for your answer! It seems indeed that it is the same problem.
If it can help anyone, as I use in my cas a LEFT JOIN, I got around it by reversing the order of my two tables and using a right join instead.