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.


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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.


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// db.js
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import postgres from 'postgres'
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const connectionString = process.env.DATABASE_URL
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const sql = postgres(connectionString)
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export default sql

3

Execute commands

Use the connection to execute commands.


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import sql from './db.js'
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async function getUsersOver(age) {
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const users = await sql`
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select name, age
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from users
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where age > ${ age }
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`
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// users = Result [{ name: "Walter", age: 80 }, { name: 'Murray', age: 68 }, ...]
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return users
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}