cratedb

Connecting Python 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 uv

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. Customize the Python script main.py as needed

   • Change the connection arguments in db_kwargs
     • 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 cursor.execute()

3. Run the Python script:

   uv run main.py

Clean up

Stop the Docker container running CrateDB:

docker stop cratedb