Best Practice to Update Spring Repository

I have Spring Repo class which look like this :

@Repository
public interface EmployeeRepository
        extends CrudRepository<Employee, Long> {


    @Query("Select s from Employee s where s.Id = ?1")
    Optional<Employee> findEmployeeByID(String Id);


     @Transactional
     @Modifying 
     @Query(" How to DO that")
     UpdateEmployeeDetails()


}

How to efficiently update the Employee details, as employee tables contains more than 15 fields i can't write a function for each of these fields, how we can generate a query which will have common logic to update

For Example : If we want to update name only so UpdateEmployeeDetails() will execute this query :

UPDATE Employee SET firstName=UPPER(firstName) WHERE id in :ids

If we want to update name and address :

UPDATE Employee SET firstName=UPPER(firstName), Address = "Address" WHERE id in :ids

How we can do this efficiently as there are may fields so we want to generate query dynamically