Database

Postgres.js

Connecting with Postgres.js

Postgres.js is a full-featured Postgres client for Node.js and Deno.

1

Install

Install Postgres.js and related dependencies.

1
npm i postgres
2

Connect

Create a db.js file with the connection details.

To get your connection details, go to your Database Settings. Make sure Use connection pooling is enabled. Choose Transaction Mode if you're on a platform with transient connections, such as a serverless function, and Session Mode if you have a long-lived connection. Copy the URI and save it as the environment variable DATABASE_URL.

1
2
3
4
5
6
7
// db.jsimport postgres from 'postgres'const connectionString = process.env.DATABASE_URLconst sql = postgres(connectionString)export default sql
3

Execute commands

Use the connection to execute commands.

1
2
3
4
5
6
7
8
9
10
11
import sql from './db.js'async function getUsersOver(age) {  const users = await sql`    select name, age    from users    where age > ${ age }  `  // users = Result [{ name: "Walter", age: 80 }, { name: 'Murray', age: 68 }, ...]  return users}