Template
single collection
multiple collections
mgodatagen
update
indexe
explain
Stage
Database
bson
mgodatagen
[{"_id":ObjectId("63a00087347cec20308de2ec"),"food":{"expires":ISODate("2016-05-18T16:00:00Z"),"type":"Banana"}}]
Query
db.collection.update({},[{$set:{"food":{"type":"Watermelon"}}}],{upsert:true})
Result