Method check_unrestricted_recursive

sql/sql_cte.cc:1462–1499

*/

bool st_select_lex::check_unrestricted_recursive(bool only_standard_compliant)
{
  With_element *with_elem= get_with_element();
  if (!with_elem ||!with_elem->is_recursive)
  {
    /*
      If this select is not from the specification of a with elememt or
      if this not a recursive with element then there is nothing to check.
    */
    return false;
  }

  /* Check conditions 1-2 for restricted specification*/
  table_map unrestricted= 0;
  table_map encountered= 0;
  if (with_elem->check_unrestricted_recursive(this, 
					      unrestricted, 
					      encountered))
    return true;
  with_elem->get_owner()->add_unrestricted(unrestricted);


  /* Check conditions 3-4 for restricted specification*/
  if ((with_sum_func && !with_elem->is_anchor(this)) ||
      (with_elem->contains_sq_with_recursive_reference()))
    with_elem->get_owner()->add_unrestricted(
                              with_elem->get_mutually_recursive());

  /* Report an error on unrestricted specification if this is required */
  if (only_standard_compliant && with_elem->is_unrestricted())
  {
    my_error(ER_NOT_STANDARD_COMPLIANT_RECURSIVE,
             MYF(0), with_elem->get_name_str());
    return true;
  }

  return false;
}


/**