Adding trino.mdx to the R2 Data Catalog examples

Adding an example of connecting Trino to the R2 Data Catalog

Author: Marcinthecloud

src/content/docs/r2/data-catalog/config-examples/trino.mdx

@@ -0,0 +1,91 @@
+---
+title: Apache Trino
+pcx_content_type: example
+---
+
+Below is an example of using [Apache Trino](https://trino.io/) to connect to R2 Data Catalog. For more information on connecting to R2 Data Catalog with Trino, refer to [Trino documentation](https://trino.io/docs/current/connector/iceberg.html).
+
+## Prerequisites
+
+- Sign up for a [Cloudflare account](https://dash.cloudflare.com/sign-up/workers-and-pages).
+- [Create an R2 bucket](/r2/buckets/create-buckets/) and [enable the data catalog](/r2/data-catalog/manage-catalogs/#enable-r2-data-catalog-on-a-bucket).
+- [Create an R2 API token, key, and secret](/r2/api/tokens/) with both [R2 and data catalog permissions](/r2/api/tokens/#permissions).
+- Install [Docker](https://docs.docker.com/get-docker/) to run the Trino container.
+
+## Setup
+
+Create a configuration file for your R2 Data Catalog connection:
+
+```properties
+# 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
+
+# R2 Data Catalog Configuration
+iceberg.catalog.type=rest
+iceberg.rest-catalog.uri=<Your R2 Data Catalog URI>
+iceberg.rest-catalog.warehouse=<Your R2 Data 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:
+
+```bash
+# 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 R2 Data Catalog:
+
+```bash
+# Connect to the Trino CLI
+docker exec -it trino-r2 trino
+```
+
+In the Trino CLI, run the following commands:
+
+```sql
+-- Show all schemas in the R2 catalog
+SHOW SCHEMAS IN r2;
+
+-- Show all schemas 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;
+```