You can run an quick query to get the columns:
set drop_system_columns=false;
SELECT to_json(_acp_system_metadata) FROM {your_table}
LIMIT 1
Below are the columns I can spot (I ran it for 1st time, so not sure which is what and not much help in offer from document😞
- acp_sourceBatchId
- commitBatchId
- trackingId
- rowId
- rowVersion
- primaryIdentity
- namespace
- ingestTime (you already know this one)
- isDeleted