// Fill out a literal array of collections you want to duplicate the records in. // Iterate over each collection using the forEach method on the array. // For each collection get (find) all the records and forEach on each of them. // Remove the _id field from each record as MongoDB will generate this for you and // you can't have a duplicate. // Save the record. // This assumes that the collection does not have any unique keys set on any of the // other fields. // Run this in the MongoDB shell
[db.<collection1>, db.<collection2>].forEach(function(collection) { collection.find({}).forEach(function(x) { delete x._id; collection.save(x); }); }); |
