- Data Structure
- Networking
- RDBMS
- Operating System
- Java
- MS Excel
- iOS
- HTML
- CSS
- Android
- Python
- C Programming
- C++
- C#
- MongoDB
- MySQL
- Javascript
- PHP
- Physics
- Chemistry
- Biology
- Mathematics
- English
- Economics
- Psychology
- Social Studies
- Fashion Studies
- Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Remove only a single document in MongoDB
To remove only a single document in MongoDB, use remove(). Let us create a collection with documents −
> db.demo165.insertOne({"ClientId":101,"ClientName":"Chris","ClientAge":34}); { "acknowledged" : true, "insertedId" : ObjectId("5e36895c9e4f06af551997cc") } > db.demo165.insertOne({"ClientId":102,"ClientName":"Bob","ClientAge":32}); { "acknowledged" : true, "insertedId" : ObjectId("5e3689659e4f06af551997cd") } > db.demo165.insertOne({"ClientId":103,"ClientName":"David","ClientAge":35}); { "acknowledged" : true, "insertedId" : ObjectId("5e36896d9e4f06af551997ce") }
Display all documents from a collection with the help of find() method −
> db.demo165.find();
This will produce the following output −
{ "_id" : ObjectId("5e36895c9e4f06af551997cc"), "ClientId" : 101, "ClientName" : "Chris", "ClientAge" : 34 } { "_id" : ObjectId("5e3689659e4f06af551997cd"), "ClientId" : 102, "ClientName" : "Bob", "ClientAge" : 32 } { "_id" : ObjectId("5e36896d9e4f06af551997ce"), "ClientId" : 103, "ClientName" : "David", "ClientAge" : 35 }
Following is the query to remove document from MongoDB −
> db.demo165.remove({"ClientId":102}); WriteResult({ "nRemoved" : 1 })
Display all documents from a collection with the help of find() method −
> db.demo165.find();
This will produce the following output −
{ "_id" : ObjectId("5e36895c9e4f06af551997cc"), "ClientId" : 101, "ClientName" : "Chris", "ClientAge" : 34 } { "_id" : ObjectId("5e36896d9e4f06af551997ce"), "ClientId" : 103, "ClientName" : "David", "ClientAge" : 35 }
Advertisements