CREATE TABLE departments (department_id DECIMAL, department_name TEXT, manager_id DECIMAL, location_id DECIMAL)
CREATE TABLE locations (location_id DECIMAL, street_address TEXT, postal_code TEXT, city TEXT, state_province TEXT, country_id TEXT)
CREATE TABLE employees (employee_id DECIMAL, first_name TEXT, last_name TEXT, email TEXT, phone_number TEXT, hire_date TIME, job_id TEXT, salary DECIMAL, commission_pct DECIMAL, manager_id DECIMAL, department_id DECIMAL)
CREATE TABLE countries (country_id TEXT, country_name TEXT, region_id DECIMAL)
CREATE TABLE jobs (job_id TEXT, job_title TEXT, min_salary DECIMAL, max_salary DECIMAL)
CREATE TABLE job_history (employee_id DECIMAL, start_date TIME, end_date TIME, job_id TEXT, department_id DECIMAL)
CREATE TABLE regions (region_id DECIMAL, region_name TEXT)

What are the department ids, full names, and salaries for employees who make the most in their departments?
SELECT first_name, last_name, salary, department_id, MAX(salary) FROM employees GROUP BY department_id
SELECT "first_name", "last_name", "salary", "department_id", MAX("salary") FROM "employees" GROUP BY "department_id"