Hi @stevewb ,

It's not available anymore. According with documentation:

" Databricks SQL allows admins to configure Spark properties for data access in the workspace settings menu. See Data access configurationsOther than data access configurations, Databricks SQL only allows a handful of Spark confs, which have been aliased to shorter names for simplicity. See Configuration parameters."

Set Spark configuration properties on Databricks | Databricks Documentation

So, using spark conf in Databricks SQL is limited.