SELECT
MAX(amount)
FROM
payments;
SELECT
*
FROM
payments
WHERE
amount = (
SELECT
MAX(amount)
FROM
payments);
SELECT
*
FROM
payments
ORDER BY amount DESC
LIMIT 1;
SELECT
customerNumber, MAX(amount)
FROM
payments
GROUP BY customerNumber
ORDER BY MAX(amount);
SELECT
customerNumber, MAX(amount)
FROM
payments
GROUP BY customerNumber
HAVING MAX(amount) > 80000;