cockroachdb

Connecting JavaScript and CockroachDB with ADBC

Instructions

Tip

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

Prerequisites

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

   • Alternatively, you can use Bun or Deno

2. Install dbc

Set up CockroachDB

1. Install Docker

2. Start a CockroachDB instance:

   docker run -d --rm \
       --env COCKROACH_DATABASE=db \
       --env COCKROACH_USER=username \
       --env COCKROACH_PASSWORD=password \
       --name=roach-single \
       -p 26257:26257 \
       -p 8080:8080 \
       cockroachdb/cockroach:v25.4.2 start-single-node

Connect to CockroachDB

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 CockroachDB:

docker stop roach-single