Query with Postgres

Once your data flows into an analytics bucket through your own ingestion pipeline, you can query it directly from Postgres using standard SQL.

This is made possible by the Iceberg Foreign Data Wrapper, which creates a bridge between your Postgres database and Iceberg tables.

Setup overview

You have two options to enable querying:

1. Dashboard UI (recommended) - Streamlined setup through the Supabase Dashboard
2. Manual installation - Install the wrapper using SQL and configuration

Installing via Dashboard UI

The dashboard provides the easiest setup experience:

1. Navigate to your Analytics Bucket page in the Supabase Dashboard.
2. Locate the namespace you want to query and click Query with Postgres.

3. Enter the Postgres schema where you want to create the foreign tables.

4. Click Connect. The wrapper is now configured.

Querying your data

Once the foreign data wrapper is installed, you can query your Iceberg tables using standard SQL:

select *
from schema_name.table_name
limit 100;

Common query examples

Get the latest events:

select event_id, event_name, event_timestamp
from analytics.events
order by event_timestamp desc
limit 1000;

Join with transactional data:

SELECT
  e.event_id,
  e.event_name,
  u.user_email
FROM analytics.events e
JOIN public.users u ON e.user_id = u.id
WHERE e.event_timestamp > NOW() - INTERVAL '7 days'
LIMIT 100;

Manual installation

For advanced use cases, you can manually install and configure the Iceberg Foreign Data Wrapper. See the Iceberg Foreign Data Wrapper documentation for detailed instructions.