text: SELECT c.FirstName, c.Age, c.PhoneNumber
  FROM Customers AS c
  JOIN Countries AS co ON co.Id = c.CountryId
  WHERE (Age >= 21 AND CHARINDEX('an', FirstName) > 0)
  OR (co.Name <> 'Greece' AND RIGHT(c.PhoneNumber, 2) = '38')
  ORDER BY c.FirstName, c.Age DESC
  
  