You can now easily unroll multiple arrays inside a single Flatten transformation in Azure Data Factory and Azure Synapse Analytics using a data pipeline with a Mapping Data Flow.
ADF and Synapse data flows gave a Flatten transformation to make it easy to unroll an array as part of your data transformation pipelines. We've updated the Flatten transformation to now allow for multiple arrays that can be unrolled in a single transformation step. This will make your ETL jobs much simpler with fewer transformation steps.
There is now a plus (+) next to the Unroll Array property where you can add more arrays to your list to unroll. You can also use ADF's meta functions like name and type to find arrays to unroll in your data using patterns. The resulting data will be joined together as a single result set as shown below.
Microsoft