the number of documents to return
(sample: StringAdd).self
(sample: StringFormat).self
(Since version 0.20.3) No longer a case class
(Since version 0.20.3) No longer a case class
(sample: ArrowAssoc[Sample]).x
(Since version 2.10.0) Use leftOfArrow
instead
(sample: Ensuring[Sample]).x
(Since version 2.10.0) Use resultOfEnsuring
instead
$sample aggregation stage, that randomly selects the specified number of documents from its input.