Template
single collection
multiple collections
mgodatagen
update
indexe
explain
Stage
Database
bson
mgodatagen
db={"players":[{"_id":ObjectId("5fba17c1c4566e57fafdcd7e"),"username":"moshe","health":0,"maxHealth":200,}]}
Query
db.players.update({username:"moshe"},{"$set":{"health":"$$maxHealth",}})
Result