> Sorry for the rather primitive question, but it's not clear to me if I need > to fetch the whole row, add a column as a dictionary entry and re-insert it > if I want to expand the row by one column. Help will be appreciated.
As was pointed you, reading and re-inserting is definitely not the way to go. But note that when inserting a column, there is never going to be a guarantee that other columns are not inserted/deleted concurrently by other writers (unless there is external synchronization). Your question makes me believe you're trying to ensure some kind of consistency across multiple columns in a row. Maybe if you describe your use-case. -- / Peter Schuller
