How do I determine which filename belongs to which column in my SQL schema? I am trying to load some very large tables (50M rows in one and 250M in another). I add 500K rows in my batch, during the batch after 87.5M rows the server crashes with no error. The client receives the error "Connection terminated". If the 2G column size has been hit I'll normalize the table more and convert to integer/smallint to save on space.