What’s the fastest way to copy a collection within the same database?

by 
> db.myoriginal.aggregate([{$out: "mycopy"}])

It is a lot faster than doing many inserts in a forEach loop.

More Related Contents:

  1. Find document with array that contains a specific value
  2. Update field in exact element array in MongoDB
  3. How to change the type of a field?
  4. Mongodb sort inner array
  5. Return only matched sub-document elements within a nested array
  6. MongoDB wildcard in the key of a query
  7. How to create a DB for MongoDB container on start up?
  8. MongoDB field order and document position change after update
  9. MongoDB Full and Partial Text Search
  10. How to enable authentication on MongoDB through Docker?
  11. Mongodb Join on _id field from String to ObjectId
  12. Difference between count() and find().count() in MongoDB
  13. How do I do a “NOT IN” query in Mongo?
  14. How to efficiently perform “distinct” with multiple keys?
  15. Hierarchical queries with Mongo using $graphLookup
  16. Search on multiple collections in MongoDB
  17. Mongo, find through list of ids
  18. Image returned from REST API always displays broken
  19. Difference between “id” and “_id” fields in MongoDB
  20. MongoDB nested array query
  21. Filtering embedded documents in MongoDB
  22. Remove multiple documents from mongo in a single query
  23. Is mongodb running?
  24. Push to two separate arrays in one update call in mongodb
  25. How to toggle a boolean field in one document with atomic operation?
  26. How to delete documents by query efficiently in mongo?
  27. Sum in nested document MongoDB
  28. Update embedded object inside array inside array in MongoDB
  29. MongoDB on Ubuntu won’t start as a service, nothing in the log
  30. Mongodb concat int and string

Leave a Comment