mirror of
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88 lines
3.0 KiB
Plaintext
88 lines
3.0 KiB
Plaintext
---
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title: Welcome
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slug: /
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---
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import { Logo } from '/components/logo.tsx'
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node-postgres is a collection of node.js modules for interfacing with your PostgreSQL database. It has support for callbacks, promises, async/await, connection pooling, prepared statements, cursors, streaming results, C/C++ bindings, rich type parsing, and more! Just like PostgreSQL itself there are a lot of features: this documentation aims to get you up and running quickly and in the right direction. It also tries to provide guides for more advanced & edge-case topics allowing you to tap into the full power of PostgreSQL from node.js.
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## Install
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```bash
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$ npm install pg
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```
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## Supporters
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node-postgres continued development and support is made possible by the many [supporters](https://github.com/brianc/node-postgres/blob/master/SPONSORS.md).
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Special thanks to [Medplum](https://www.medplum.com/) for sponsoring node-postgres for a whole year!
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<a href="https://www.medplum.com/">
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<img
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alt="Medplum"
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src="https://raw.githubusercontent.com/medplum/medplum-logo/refs/heads/main/medplum-logo.png"
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style={{
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width: '300px',
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height: 'auto',
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margin: '0 auto',
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display: 'block',
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}}
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/>
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</a>
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If you or your company would like to sponsor node-postgres stop by [GitHub Sponsors](https://github.com/sponsors/brianc) and sign up or feel free to [email me](mailto:brian@pecanware.com) if you want to add your logo to the documentation or discuss higher tiers of sponsorship!
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# Version compatibility
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node-postgres strives to be compatible with all recent LTS versions of node & the most recent "stable" version. At the time of this writing node-postgres is compatible with node 18.x, 20.x, 22.x, and 24.x.
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## Getting started
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The simplest possible way to connect, query, and disconnect is with async/await:
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```js
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import { Client } from 'pg'
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const client = new Client()
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await client.connect()
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const res = await client.query('SELECT $1::text as message', ['Hello world!'])
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console.log(res.rows[0].message) // Hello world!
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await client.end()
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```
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### Error Handling
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For the sake of simplicity, these docs will assume that the methods are successful. In real life use, make sure to properly handle errors thrown in the methods. A `try/catch` block is a great way to do so:
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```ts
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import { Client } from 'pg'
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const client = new Client()
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await client.connect()
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try {
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const res = await client.query('SELECT $1::text as message', ['Hello world!'])
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console.log(res.rows[0].message) // Hello world!
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} catch (err) {
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console.error(err);
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} finally {
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await client.end()
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}
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```
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### Pooling
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In most applications you'll want to use a [connection pool](/features/pooling) to manage your connections. This is a more advanced topic, but here's a simple example of how to use it:
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```js
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import { Pool } from 'pg'
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const pool = new Pool()
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const res = await pool.query('SELECT $1::text as message', ['Hello world!'])
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console.log(res.rows[0].message) // Hello world!
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```
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Our real-world apps are almost always more complicated than that, and I urge you to read on!
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