Database
[{"_id":"event1","pricingDict":{"usd":0},"eventManagers":{"dnewh2134":{"role":"Admin"},"jisjdf2":{"role":"Organizer"}}},{"_id":"event2","pricingDict":{"usd":25},"eventManagers":{"jisjdf2":{"role":"Organizer"}}},{"_id":"event3","pricingDict":{"usd":25,"aud":32},"eventManagers":{"dnewh2134":{"role":"Admin"},"jisjdf2":{"role":"Organizer"}}}]
Query
db.collection.find({"pricingDict.usd":{$gt:0}})