Trino

Below is an example of using Trino ↗︎ to connect to Basin Catalog. For more information on connecting to Basin Catalog with Trino, refer to Trino documentation ↗︎.

Prerequisites

Sign up for a Cloudflare account ↗︎.
Create an R2 bucket and enable the data catalog.
Create an R2 API token, key, and secret with both R2 and data catalog permissions.
Install Docker ↗︎ to run the Trino container.

Setup

Create a local directory for the catalog configuration and change directories to it

mkdir -p trino-catalog && cd trino-catalog/

Create a configuration file called r2.properties for your Basin Catalog connection:

# r2.properties
connector.name=iceberg

# R2 Configuration
fs.native-s3.enabled=true
s3.region=auto
s3.aws-access-key=<Your R2 access key>
s3.aws-secret-key=<Your R2 secret>
s3.endpoint=<Your R2 endpoint>
s3.path-style-access=true

# Basin Catalog Configuration
iceberg.catalog.type=rest
iceberg.rest-catalog.uri=<Your Basin Catalog URI>
iceberg.rest-catalog.warehouse=<Your Basin Catalog warehouse>
iceberg.rest-catalog.security=OAUTH2
iceberg.rest-catalog.oauth2.token=<Your R2 authentication token>

Example usage

Start Trino with the R2 catalog configuration:

# Create a local directory for the catalog configuration
mkdir -p trino-catalog

# Place your r2.properties file in the catalog directory
cp r2.properties trino-catalog/

# Run Trino with the catalog configuration
docker run -d \
  --name trino-r2 \
  -p 8080:8080 \
  -v $(pwd)/trino-catalog:/etc/trino/catalog \
  trinodb/trino:latest

Connect to Trino and query your Basin Catalog:

# Connect to the Trino CLI
docker exec -it trino-r2 trino

In the Trino CLI, run the following commands:

-- Show all schemas in the R2 catalog
SHOW SCHEMAS IN r2;

-- Create a schema in the R2 catalog
CREATE SCHEMA r2.example_schema;

-- Create a table with some values in it
CREATE TABLE r2.example_schema.yearly_clicks (
    year,
    clicks
)
WITH (
   partitioning = ARRAY['year']
)
AS VALUES
    (2021, 10000),
    (2022, 20000);

-- Show tables in a specific schema
SHOW TABLES IN r2.example_schema;

-- Query your Iceberg table
SELECT * FROM r2.example_schema.yearly_clicks;