Update Strategy Transformation on the Databricks Spark Engine
Update Strategy Transformation on the Databricks Spark Engine
You can use the Update Strategy transformation to perform INSERT, UPDATE, and other operations. You can also perform INSERT and UPDATE operations in select Delta Lake columns.
General Restrictions
You can only use the Update Strategy transformation on the Databricks Spark Engine when you use a Delta Lake table target.
The Update Strategy transformation is supported only on Databricks distributions that support Delta ACID.
Mapping Validation
Mapping validation fails in the following situations.
The Update Strategy transformation is connected to more than one target.
The Update Strategy transformation is not located immediately before the target.
The Update Strategy transformation target is an external ACID table.
The target does not contain a connected primary key.
The property to enable truncation of the target table at run time is selected.
One of the following target strategies for the target table at run time is selected: