Delete Document From Collection

In Python, To delete documents in MongoDB we can use the "pymongo" library.

We can use the "delete_one()" method to delete a single document or the "delete_many()" method to delete multiple documents that match a specific filter.

Here's how we can do it:

MongoDB Configuration:

After importing "pymongo", we must provide a connection URL and database name to MongoClient.

Example:

# import pymongo library
import pymongo

# Connection URL and database name
uri = "mongodb://localhost:27017/"
database_name = "your_database_name"
collection_name = "your_collection_name"

# Connect to MongoDB server
client = pymongo.MongoClient(uri)

# Access the database
db = client[database_name]

# Access the collection
collection = db[collection_name]

Make sure to replace "your_database_name" and "your_collection_name" with your actual database and collection name.

Delete Single Document From Collection:

Example:

# Delete a single document
filter = {"_id": ObjectId("document_id_to_delete")}
result = collection.delete_one(filter)

# Optionally, print result information 

# result.deleted_count will be 1, if query criteria match
print("Deleted count:", result.deleted_count)

For deleting a single document, we can use "delete_one()" method and provide a filter specifying the document to delete.
"result.deleted_count" returns the number of documents deleted by the operation.

Delete Many Documents From Collection:

Example:

# Delete multiple documents
filter = {"field_to_match": "value_to_match"} 
result = collection.delete_many(filter)


# Optionally, print result information

# result.deleted_count will be equal to no of documents match the query criteria.
print("Deleted count:", result.deleted_count)

For deleting multiple documents, we can use "delete_many()" method and provide a filter specifying the documents to delete.
"result.deleted_count" returns the number of documents deleted by the operation.
Make sure to replace "field_to_match", and "value_to_match" with your actual filter criteria.

Delete All Document From Collection:

Example:

# Delete all documents from collection
filter = {} 

# This query will remove all document from Collection
result = collection.delete_many(filter)

# result.deleted_count will be equal to no of documents match the query criteria.
print("Deleted count:", result.deleted_count)

The above filter query will delete all documents from the collection, filter = {} indicates no selection criteria apply to delete documents, so all documents in the collection are eligible for deletion.
"result.deleted_count" returns the number of documents deleted by the operation.

<-- Find Document

Delete Document From Collection

In Python, To delete documents in MongoDB we can use the "pymongo" library.

We can use the "delete_one()" method to delete a single document or the "delete_many()" method to delete multiple documents that match a specific filter.

Here's how we can do it:

MongoDB Configuration:

After importing "pymongo", we must provide a connection URL and database name to MongoClient.

Example:

# import pymongo library
import pymongo

# Connection URL and database name
uri = "mongodb://localhost:27017/"
database_name = "your_database_name"
collection_name = "your_collection_name"

# Connect to MongoDB server
client = pymongo.MongoClient(uri)

# Access the database
db = client[database_name]

# Access the collection
collection = db[collection_name]

Make sure to replace "your_database_name" and "your_collection_name" with your actual database and collection name.

Delete Single Document From Collection:

Example:

# Delete a single document
filter = {"_id": ObjectId("document_id_to_delete")}
result = collection.delete_one(filter)

# Optionally, print result information 

# result.deleted_count will be 1, if query criteria match
print("Deleted count:", result.deleted_count)

For deleting a single document, we can use "delete_one()" method and provide a filter specifying the document to delete.
"result.deleted_count" returns the number of documents deleted by the operation.

Delete Many Documents From Collection:

Example:

# Delete multiple documents
filter = {"field_to_match": "value_to_match"} 
result = collection.delete_many(filter)


# Optionally, print result information

# result.deleted_count will be equal to no of documents match the query criteria.
print("Deleted count:", result.deleted_count)

For deleting multiple documents, we can use "delete_many()" method and provide a filter specifying the documents to delete.
"result.deleted_count" returns the number of documents deleted by the operation.
Make sure to replace "field_to_match", and "value_to_match" with your actual filter criteria.

Delete All Document From Collection:

Example:

# Delete all documents from collection
filter = {} 

# This query will remove all document from Collection
result = collection.delete_many(filter)

# result.deleted_count will be equal to no of documents match the query criteria.
print("Deleted count:", result.deleted_count)

The above filter query will delete all documents from the collection, filter = {} indicates no selection criteria apply to delete documents, so all documents in the collection are eligible for deletion.
"result.deleted_count" returns the number of documents deleted by the operation.

<-- Find Document