cratedb

Connecting JavaScript and CrateDB with ADBC

Instructions

Tip

If you already have a CrateDB instance running, skip the steps to set up and clean up CrateDB.

Prerequisites

1. Install Node.js (version 22 or later)

   • Alternatively, you can use Bun or Deno

2. Install dbc

Set up CrateDB

1. Install Docker

2. Start a CrateDB instance:

   docker run -d --rm --name cratedb -p 4200:4200 -p 5432:5432 crate -Cdiscovery.type=single-node

Connect to CrateDB

1. Install the PostgreSQL ADBC driver:

   dbc install postgresql

2. Install dependencies:

   npm --prefix ../.. install

3. Customize the script main.js as needed

   • Change the connection arguments in databaseOptions
     • Format uri according to the connection URI format used by PostgreSQL, or keep it as is
   • If you changed which database you're connecting to, also change the SQL SELECT statement in conn.query()

4. Run the script:

   Node.js:

   node main.js

   Bun:

   bun run main.js

   Deno:

   deno run --allow-ffi --allow-env main.js

Clean up

Stop the Docker container running CrateDB:

docker stop cratedb