Template
single collection
multiple collections
mgodatagen
update
indexe
explain
Stage
Database
bson
mgodatagen
db={"Test":[{"x":[1,2],"y":[1,2,3]},{"x":[1,2],"y":[2,3,4]}]}
Query
db.Test.aggregate([{"$match":{"y":{"$all":[1,2]}}},{"$project":{"_id":0}}])
Result