MongoDB Query 📍

✨ Filter the Result

The first argument of the find() method is a query object, and is used to limit the search.

import pymongo

myclient = pymongo.MongoClient("mongodb://localhost:27017/")
mydb = myclient["mydatabase"]
mycol = mydb["customers"]

myquery = { "address": "Park Lane 38" }

mydoc = mycol.find(myquery)

for x in mydoc:
  print(x)

🔧 Advanced Query

To make advanced queries you can use modifiers as values in the query object.

E.g. to find the documents where the "address" field starts with the letter "S" or higher (alphabetically), use the greater than modifier: {"$gt": "S"}

myquery = { "address": { "$gt": "S" } }

mydoc = mycol.find(myquery)

for x in mydoc:
  print(x)

📝 Filter With Regular Expressions

You can also use regular expressions as a modifier.

Regular expressions can only be used to query strings.

To find only the documents where the "address" field starts with the letter "S", use the regular expression {"$regex": "^S"}

myquery = { "address": { "$regex": "^S" } }

mydoc = mycol.find(myquery)

for x in mydoc:
  print(x)