Left Join: join two collections in mongodb to get all data from a collection and only the commun ones FROM the other collection

Working with Data
1

Hello guys,
I’m trying to join two collections in mongodb to get all data from a collection and only the commun ones FROM the other collection any idea if it’s possible to do this in mongodb? if yes how to?
thanks in advance

2

Hi,

Yes, you can join 2 collections with Aggregation Framework and $unionWith stage.

Here are the docs with syntax and examples, so you can check how to do it. :smile: