Function create_virtual_tmp_table

sql/sql_select.h:2543–2568

*/

inline Virtual_tmp_table *
create_virtual_tmp_table(THD *thd, List<Spvar_definition> &field_list)
{
  Virtual_tmp_table *table;
  if (!(table= new(thd) Virtual_tmp_table(thd)))
    return NULL;

  /*
    If "simulate_create_virtual_tmp_table_out_of_memory" debug option
    is enabled, we now enable "simulate_out_of_memory". This effectively
    makes table->init() fail on OOM inside multi_alloc_root().
    This is done to test that ~Virtual_tmp_table() called from the "delete"
    below correctly handles OOM.
  */
  DBUG_EXECUTE_IF("simulate_create_virtual_tmp_table_out_of_memory",
                  DBUG_SET("+d,simulate_out_of_memory"););

  if (table->init(field_list.elements) ||
      table->add(field_list) ||
      table->open())
  {
    delete table;
    return NULL;
  }
  return table;
}


/**