SELECT MAX(<numeric column>) FROM <table>;
SELECT MAX(<numeric column>) FROM <table> GROUP BY <other column>;
SELECT MAX(salary) FROM employees;
SELECT id, MAX(salary) FROM employees GROUP BY id;
SELECT t1.*
FROM employees t1
INNER JOIN (
SELECT id, max(salary) AS salary FROM employees GROUP BY id
) t2 ON t1.id = t2.id AND t1.salary = t2.salary;
SELECT max(MY_COLUMN) FROM my_table;
SELECT MY_ID, max(MY_COLUMN) FROM my_table GROUP BY ID; -- Max by MY_ID
● SELECT first-name, MAX(salary)
FROM department d LEFT OUTER JOIN employee e ON (d.department_id = e.department_id)
GROUP BY department_id;