Template
single collection
multiple collections
mgodatagen
update
indexe
explain
Stage
Database
bson
mgodatagen
[{foos:[{val:1},{val:10},{val:5},]}]
Query
db.collection.update({},[{$set:{foos:{$map:{input:"$foos",in:{val:{$multiply:["$$this.val",10]}}}}}}])
Result