Python MongoDB – insert_one Query

03 Jun, 2022
MongoDB is a cross-platform document-oriented and a non relational (i.e NoSQL) database program. It is an open-source document database, that stores the data in the form of key-value pairs. MongoDB is developed by MongoDB Inc. and was initially released on 11 February 2009. It is written in C++, Go, JavaScript, and Python languages. MongoDB offers high speed, high availability, and high scalability.
This is a method by which we can insert a single entry within the collection or the database in MongoDB. If the collection does not exist this method creates a new collection and insert the data into it. It takes a dictionary as a parameter containing the name and value of each field in the document you want to insert in the collection. 
This method returns an instance of class “~pymongo.results.InsertOneResult” which has a “_id” field that holds the id of the inserted document. If the document does not specify an “_id” field, then MongoDB will add the “_id” field and assign a unique object id for the document before inserting.
Syntax:
collection.insert_one(document,  bypass_document_validation=False, session=None, comment=None)
Parameters: 
‘document’: The document to insert. Must be a mutable mapping type. If the document does not have an _id field one will be added automatically.
‘bypass_document_validation’ (optional): If “True”, allows the write to opt-out of document level validation. Default is “False”.
‘session’ (optional): A class ‘~pymongo.client_session.ClientSession’.
‘comment'(optional): A user-provided comment to attach to this command.
Example 1: 
Sample database is as follows: 
Example
Python3
# importing Mongoclient from pymongofrom pymongo import MongoClient # Making Connectionmyclient = MongoClient("mongodb://localhost:27017/") # databasedb = myclient["GFG"] # Created or Switched to collection# names: GeeksForGeekscollection = db["Student"] # Creating Dictionary of records to be# insertedrecord = { "_id": 5,          "name": "Raju",          "Roll No": "1005",          "Branch": "CSE"}   # Inserting the record1 in the collection# by using collection.insert_one()rec_id1 = collection.insert_one(record)
Output: 
Example 2: Inserting multiple values
To insert multiple values, 2 Methods can be followed:
#1: Naive Method: Using for loop and insert_one
Python3
# importing Mongoclient from pymongofrom pymongo import MongoClient  # Making Connectionmyclient = MongoClient("mongodb://localhost:27017/") # databasedb = myclient["GFG"] # Created or Switched to collection# names: GeeksForGeekscollection = db["Student"] # Creating Dictionary of records to be# insertedrecords = {    "record1": { "_id": 6,    "name": "Anshul",    "Roll No": "1006",    "Branch": "CSE"},     "record2": { "_id": 7,    "name": "Abhinav",    "Roll No": "1007",    "Branch": "ME"}}  # Inserting the records in the collection# by using collection.insert_one()for record in records.values():    collection.insert_one(record)
Output: 
#2: Using insert_many method: This method can be used to insert multiple documents in a collection in MongoDB.
The insert_many method is explained briefly in the next tutorial.
indorexian
Python-mongoDB
Python
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