How to sort collection of MongoDB Database in descending order using Node.js ?

MongoDB, the most popular NoSQL database, is an open-source document-oriented database. The term ‘NoSQL’ means ‘non-relational’. It means that MongoDB isn’t based on the table-like relational database structure but provides an altogether different mechanism for storage and retrieval of data. This format of storage is called BSON ( similar to JSON format).

MongoDB Module: This module of Node.js is used for connecting the MongoDB database as well as used for manipulating the collections and databases in MongoDB. The mongodb.connect() method is used for connecting the MongoDB database which is running on a particular server on your machine. (Refer to this article).

sort() Method of MongoDB is used for sorting the documents. This method is used to define the ordering of the documents.

• Collection's particular key  in ascending order

{Collection's key:-1}

Installing module:

npm install mongodb

Project structure:

Running the server on Local IP: Data is the directory where MongoDB server is present.

mongod --dbpath=data --bind_ip 127.0.0.1

MongoDB database:

Database name:GFG
Collection name:aayush

Index.js

const mongoclient = require("mongodb");
const url = "mongodb://localhost:27017/"

// Database name
const databasename = "GFG"

// Connecting to MongoDB
mongoclient.connect(url).then((db) => {
    const connect = db.db(databasename);

    // Connecting to collection
    const collection = connect.collection("aayush");
    console.log("Connection Created")

    // Sort the document key
    const sort = { rollno: -1 }

    collection.find().sort(sort).toArray((err, ans,) => {
        if (!err) {

            // Printing the documents
            console.log(ans);
        }
    })

}).catch((err) => {
    console.log(err.Message);
})

Execution command:

node index.js

Console Output:

zack_aayush

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Article Tags :

• Technical Scripter
• Web Technologies
• Node.js
• MongoDB
• Technical Scripter 2020
• Node.js-Misc
• MongoDB-method

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