Optionalbatch1-based batch index. Unset on the terminal message.
Chunks carried by this batch. Empty on the terminal message.
OptionalclientClient-assigned query/request id.
OptionalconnectionServer-assigned connection id for connection-scoped messages.
Stream id named in the statement's scan_data_from_quack_client call.
OptionaltotalBatch count of the whole stream. Only the terminal message sets it.
Concrete message type id.
One batch of client data for a statement reading
scan_data_from_quack_client.