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 vote147 views2 answers
N factorial
Python
0 vote140 views1 answer
Get number of occurrences of substring case independent python
Python
0 vote142 views1 answer
Print only strings in list python
Python
2 votes150 views1 answer
Kaggle vs colab
Python
63 votes149 views3 answers
Iterate through a list
Python
0 vote200 views2 answers
Where should favicon.ico be placed in flask app
Python Flask
0 vote179 views2 answers
Print font size python
Python
1 vote147 views2 answers
Update python 3.9
Python
0 vote113 views1 answer
Mechanize python #9
Python
2 votes159 views1 answer
Python3 seek
Python