SELECT
    CLASS_NAME AS CLASS,
    PERSON_NAME AS PERSON,
    SUM(AMT) AS HOUSEHOLDS
FROM
    HOUSEHOLD
WHERE
    CLASS_CODE <> '01'
    AND PERSON_CODE <> '1'
GROUP BY
    CLASS_NAME,
    PERSON_NAME
HAVING
    SUM(AMT) = (
        SELECT
            MAX(TOTAL)
        FROM
            (
                SELECT
                    CLASS_NAME,
                    PERSON_NAME,
                    SUM(AMT) AS TOTAL
                FROM
                    HOUSEHOLD
                WHERE
                    CLASS_CODE <> '01'
                    AND PERSON_CODE <> '1'
                GROUP BY
                    CLASS_NAME,
                    PERSON_NAME
            )
    );