mongodb move documents from one collection to another collection

Question

How can documents be moved from one collection to another collection in MongoDB?? For example: I have lot of documents in

Answer 1

you can use range query to get data from sourceCollection and keep the cursor data in variable and loop on it and insert to target collection:

 var doc = db.sourceCollection.find({
        "Timestamp":{
              $gte:ISODate("2014-09-01T00:00:00Z"),
              $lt:ISODate("2014-10-01T00:00:00Z")
        }
 });

 doc.forEach(function(doc){
    db.targetCollection.insert(doc);
 })

Hope so it helps!!