Mongodb aggregate count

Mongo count

db.collection.countDocuments( <query>, <options> )

Source: docs.mongodb.com

Mongodb aggregate count

#return the number of documents whose "field" field has a value of A 
query = db.collection.aggregate([{
          "$match": {
            "field": "A"
          }
        },{
          "$count": "number of occurrences"
}])

Similar codes

-1 vote199 views1 answer
How to reverse the order of columns in matrix in python
Python
0 vote226 views1 answer
Crank nicholson scheme python
Python
0 vote208 views1 answer
Append time complexity python
Python
120 votes224 views6 answers
Getting Input in Python
Python
1 vote218 views1 answer
Tqdm command that works both in notebook and lab
Python
3 votes256 views3 answers
Flask migrate
Python Flask
2 votes230 views4 answers
How to do fibonacci sequence in python
Python
0 vote226 views1 answer
Stripe python library
Python
12 votes213 views1 answer
Python regex cheat sheet
Python
2 votes189 views1 answer
Python check if email is valid
Python