Template
single collection
multiple collections
mgodatagen
update
indexe
explain
Stage
Database
bson
mgodatagen
[{_id:1,key:"abc",__v:1},{_id:2,"key":"abc",__v:2}]
Query
db.collection.update({key:"abc",__v:2},{$set:{newField:"updated"},$inc:{"__v":1}})
Result