Currently, I am diving into the world of NestJS. Within my project, I have two collections - Collection 1 and Collection 2. My goal is to retrieve data from Collection 1 and then store that data in Collection 2. Can anyone provide guidance on writing the necessary code to make this happen?
The recommended approach for transferring data is to run an aggregation pipeline as shown below:
db.sourceCollection.aggregate([ { $out : "targetCollection" } ])
If the target collection is located in a different database, utilize $merge instead.
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