How can I perform database queries in Node.js?

How can I perform database queries in Node.js?

You can use libraries like mysql, pg, or mongoose to interact with databases in Node.js. Which database are you using?

I'm using MongoDB. How do I connect to it?

You can use the mongoose library. First, install it using npm, then use mongoose.connect() to connect to your MongoDB instance.

What about querying data once I'm connected?

You can use methods like find(), findOne(), or aggregate() to query data. For example, Model.find({}) retrieves all documents.

Can you show me a simple example?

Sure! Here's a basic example:

const mongoose = require('mongoose');

mongoose.connect('mongodb://localhost:27017/mydatabase');

const User = mongoose.model('User', new mongoose.Schema({ name: String }));

User.find({}).then(users => console.log(users));