Mongodb export with conditional logic?

Question

I want to export "street" : "Downstreet 34"
But dont export, if the source value is other than 3

Sample 1 JSON
"addresses" : [ {"source" : 3 , "street" : "Downstreet 34"}]
Export "street" : "Downstreet 34"

---

Sample 2 JSON
"addresses" : [ {"source" : 2 , "street" : "Downstreet 34"}]
Dont export "street" : "Downstreet 34"

Answer 1

db.collection.find(
    { source: 2 },
    { street: 1}
)

Example that you can use to build queries like these are : source

# SQL QUERY
SELECT user_id, status
FROM users
WHERE status = "A"


#mongoDB Query
db.users.find(
    { status: "A" },
    { user_id: 1, status: 1, _id: 0 }
)