For Mongodb joins not supported

Is that issue still not resolved as i saw this request, requested in 2019.

Also if joins not possible in custom question, can we use joins in native query for MONGODB?

Hi @varnika

For reference for everybody else:
https://github.com/metabase/metabase/issues/9095 - upvote by clicking :+1: on the first post

No, joins are not supported in the GUI. MongoDB didn't support this until somewhat recently, and joins in MongoDB are very different from other databases.
You would currently have to write the join queries yourself.