Method nest_last_join

sql/sql_parse.cc:1638–1670

*/

TABLE_LIST *st_select_lex::nest_last_join(THD *thd)
{
  DBUG_ENTER("nest_last_join");

  TABLE_LIST *const ptr=
    TABLE_LIST::new_nested_join(thd->mem_root, "(nest_last_join)",
                                embedding, join_list, this);
  if (ptr == NULL)
    DBUG_RETURN(NULL);

  List<TABLE_LIST> *const embedded_list= &ptr->nested_join->join_list;

  for (uint i=0; i < 2; i++)
  {
    TABLE_LIST *table= join_list->pop();
    table->join_list= embedded_list;
    table->embedding= ptr;
    embedded_list->push_back(table);
    if (table->natural_join)
    {
      ptr->is_natural_join= TRUE;
      /*
        If this is a JOIN ... USING, move the list of joined fields to the
        table reference that describes the join.
      */
      if (prev_join_using)
        ptr->join_using_fields= prev_join_using;
    }
  }
  join_list->push_front(ptr);

  DBUG_RETURN(ptr);
}


/**