Template
single collection
multiple collections
mgodatagen
update
indexe
explain
Stage
Database
bson
mgodatagen
[{"key":1,price:200},{"key":2,price:300},{"key":1,price:500},{"key":2,price:900}]
Query
db.collection.find({$or:[{"price":{$lt:400}},{"price":{$gt:800}}]})
Result