SQL Lab

SQL Lab is the query editor inside Superset. This page covers the Databaas specifics; for the editor itself — tabs, saved queries, result exploration — see the Superset SQL Lab docs.

Run a query

Open Dashboards, then SQL → SQL Lab in Superset’s top menu (Superset reuses your Databaas identity — no second login). Choose the Lakehouse database, then pick your namespace from the schema list: namespaces appear as schemas, tables under the namespace they belong to. Naming both together always works:

SELECT * FROM <namespace>.<table> LIMIT 10

The fully qualified name puts the catalog iceberg in front, which you need when you query outside the selected database:

SELECT * FROM iceberg.<namespace>.<table> LIMIT 10

Substitute the namespace and table from the catalog breadcrumb — see browsing the catalog.

Your query runs as you

SQL Lab sends your query to Trino, which runs it under your identity — the same data grants as in the catalog and notebooks. Dashboards are a door, not a filter: everyone who can open SQL Lab connects to the same databases and schemas; what differs per person is which queries return rows. See how access works and query engines.

Lakehouse is the only database, and you cannot add or edit database connections from Superset.

If a query fails or stops

• A query runs for at most 300 seconds before SQL Lab cancels it. Narrow it with a WHERE clause or a LIMIT, or move heavy transformations into a pipeline.
• Queries start failing after a while in Superset. Your Superset sign-in carries a token that lasts about 15 minutes and is not refreshed in the background. Sign out of Databaas and back in, then rerun the query.