Найдите сотрудника с самой высокой зарплатой в каждом отделе. Выведите название отдела, имя сотрудника и соответствующую зарплату.
employee
id:int
first_name:varchar
last_name:varchar
age:int
sex:varchar
employee_title:varchar
department:varchar
salary:int
target:int
bonus:int
email:varchar
city:varchar
address:varchar
manager_id:intОТВЕТ:
SELECT department as department,
first_name as employee_name,
salary
FROM employee
WHERE (department, salary) IN
(SELECT department, MAX(salary)
FROM employee
GROUP BY department)
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