The Batch Mode of Azure Synapse bulkInsert.
Possible ValuesBCP, COPY, STANDARD
COPY utilizes an external storage account to load data into and then copy into your Azure Synapse table. You will also need to set the StorageAccountLocation and the AzureSASToken, which only supports INSERT statement. BCP transfers data to Azure Synapse directly with BulkLoadBCP protocol through the TCP communication between client and server, which only supports INSERT statements. STANDARD uses standard INSERT, UPDATE and DELETE statements for batch operations.