Simply display zero if it's less or equals to 0.
/// Send data contained in the query.
        ReadBufferFromMemory data_in(parsed_insert_query->data, parsed_insert_query->end - parsed_insert_query->data
        try
        {
            sendDataFrom(data_in, sample, columns_description_for_query, parsed_query, have_data_in_stdin
            if (have_data_in_stdin)
                sendDataFromStdin(sample, columns_description_for_query, parsed_query
        }
        catch (Exception & e)
        {
            /// The following query will use data from input
            //      "INSERT INTO data FORMAT TSV\n " < data.csv
            //  And may be pretty hard to debug, so add information about data source to make it easier.
            e.addMessage("data for INSERT was parsed from query"
            throw;
        }
        // Remember where the data ended. We use this info later to determine
        // where the next query begins.
         parsed_insert_query->data + data_in.count(
    }
    else if (!is_interactive)
    {
        sendDataFromStdin(sample, columns_description_for_query, parsed_query
    }
    else
        throw Exception("No data to insert", ErrorCodes::NO_DATA_TO_INSERT
}
void ClientBase::sendDataFrom(ReadBuffer & buf, Block & sample, const ColumnsDescription & columns_description, ASTPtr parsed_query, bool have_more_data)
{
    String current_format = insert_format;