@Override
    public InputStream getAsciiStream(String columnLabel) throws SQLException {
        return getAsciiStream(findColumn(columnLabel));
    }
Check if there is another row.

@return {@code true} if this result set has another row after the current
        cursor position, {@code false} else
@throws SQLException if something goes wrong
clickhouse-jdbc/src/main/java/com/clickhouse/jdbc/ClickHouseResultSet.java