Querying MongoDB in Node.js is super flexible! You can filter, sort, and manipulate results easily — either using the native MongoDB driver or Mongoose.

✅ 1. Using Native MongoDB Driver

📦 Step 1: Install

bash
npm install mongodb

🔍 Step 2: Query Examples

js
const { MongoClient } = require('mongodb');const uri = 'mongodb://localhost:27017';const client = new MongoClient(uri);async function runQueries() {  try {    await client.connect();    const db = client.db('myDatabase');    const users = db.collection('users');    // 👉 Find all users    const all = await users.find().toArray();    console.log('All Users:', all);    // 👉 Find one user    const one = await users.findOne({ name: 'Alice' });    console.log('One User:', one);    // 👉 Filter: users older than 25    const filtered = await users.find({ age: { $gt: 25 } }).toArray();    console.log('Age > 25:', filtered);    // 👉 Sort: by age descending    const sorted = await users.find().sort({ age: -1 }).toArray();    console.log('Sorted by age desc:', sorted);    // 👉 Pagination: skip 5, limit 5    const paginated = await users.find().skip(5).limit(5).toArray();    console.log('Page results:', paginated);  } finally {    await client.close();  }}runQueries();

🪄 2. Using Mongoose

📦 Step 1: Install

bash
npm install mongoose

🔍 Step 2: Query Examples

js
const mongoose = require('mongoose');mongoose.connect('mongodb://localhost:27017/myDatabase')  .then(() => console.log('Connected!'));// Define schema and modelconst userSchema = new mongoose.Schema({ name: String, age: Number });const User = mongoose.model('User', userSchema);async function queryUsers() {  // 👉 Find all  const all = await User.find();  console.log('All:', all);  // 👉 Find one  const one = await User.findOne({ name: 'Bob' });  console.log('One:', one);  // 👉 Filter: age > 20  const filtered = await User.find({ age: { $gt: 20 } });  // 👉 Sort and limit  const sorted = await User.find().sort({ age: -1 }).limit(3);  console.log('Filtered:', filtered);  console.log('Top 3 by age:', sorted);  mongoose.disconnect();}queryUsers();

🧠 Common MongoDB Query Operators

Let me know if you want to:

• Build advanced queries

• Create API endpoints for querying

• Add pagination or search