text: -- Get me all the employees above 60, use the appropriate date functions
  select age(birth_date), *
  from employees
  where extract(year from age(birth_date)) > 60;
  
  -- alternative
  select count(birth_date)
  from employees
  where birth_date < now() - interval '61 years'; -- 61 years before the current date
  
  -- How many employees where hired in February?
  select count(emp_no)
  from employees
  where extract(month from hire_date) = 2;
  
  -- How many employees were born in november?
  select count(emp_no)
  from employees
  where extract(month from birth_date) = 11;
  
  -- Who is the oldest employee?
  select max(age(birth_date))
  from employees;
  
  -- How many orders were made in January 2004?
  select count(id)
  from orders
  where date_trunc('month', order_date) = '2004-01-01';
  