Template
single collection
multiple collections
mgodatagen
update
indexe
explain
Stage
Database
bson
mgodatagen
[{"_id":{"$oid":"62c2e94e65f32725f8f62b79"},friends:{"pending":[1,4,5]},"surname":"doe1"}]
Query
db.collection.update({surname:"doe1"},{$push:{"friends.pending":7}})
Result