$out Stage Syntax
The syntax for the $out stage is given below:
{ $out: { db: "<output-db>", coll: "<output-collection>" } }
This syntax allows users to write the results of an aggregation pipeline to a specified collection in a specified database.
MongoDB Aggregation $out
MongoDB’s Aggregation Pipeline is a powerful tool for data processing that allows users to perform a series of operations to filter, transform, and analyze data. One key stage in the aggregation pipeline is the $out stage, which enables users to write the output of the pipeline to a new collection.
In this article, we’ll explore the $out stage in the MongoDB aggregation pipeline along with its syntax, use cases, and examples of how it can be used efficiently to manage and analyze data.