The 'time' column, by itself, is not sufficient to determine a unique row in Treasure Data tables. Sometimes, even using a combination of all of the columns the entire row, is not sufficient to determine a unique row. It would be great if there was a checkbox (or cli option) when creating the table, that automatically inserted UUID values when a new row is created.
We usually solve this problem by re-writing the new data, after the fact, into another table with a UUID column. This makes it hard to trace back to the original "raw" data row. It would be great to be able to have a unique identifier from the very beginning that we can carry through all of our processing.