the subpipelines to run
(facet: StringAdd).self
(facet: StringFormat).self
(Since version 0.20.3) No longer a case class
(Since version 0.20.3) No longer a case class
(facet: ArrowAssoc[Facet]).x
(Since version 2.10.0) Use leftOfArrow
instead
(facet: Ensuring[Facet]).x
(Since version 2.10.0) Use resultOfEnsuring
instead
Processes multiple aggregation pipelines within a single stage on the same set of input documents.
Each sub-pipeline has its own field in the output document where its results are stored as an array of documents.
https://docs.mongodb.com/manual/reference/operator/aggregation/facet/