python 找出mongodDB里某个领域的所有可能的值

Posted 2021-05-09

db.collection.distinct('x')

# add a query
db.getCollection('actions').distinct('action_type', 
        {"datetime": {"$gte": ISODate("2017-11-06T00:00:00.000Z"), "$lt": ISODate("2017-11-13T00:00:00.000Z")}}
    );
    
    
References
- https://docs.mongodb.com/manual/reference/method/db.collection.distinct/