Function mysql_derived_create

sql/sql_derived.cc:1131–1159

*/

static
bool mysql_derived_create(THD *thd, LEX *lex, TABLE_LIST *derived)
{
  DBUG_ENTER("mysql_derived_create");
  DBUG_PRINT("enter", ("Alias: '%s'  Unit: %p",
                       (derived->alias.str ? derived->alias.str : "<NULL>"),
                       derived->get_unit()));
  TABLE *table= derived->table;
  SELECT_LEX_UNIT *unit= derived->get_unit();

  if (table->is_created())
    DBUG_RETURN(FALSE);
  select_unit *result= derived->derived_result;
  if (table->s->db_type() == TMP_ENGINE_HTON)
  {
    result->tmp_table_param.keyinfo= table->s->key_info;
    if (create_internal_tmp_table(table, result->tmp_table_param.keyinfo,
                                  result->tmp_table_param.start_recinfo,
                                  &result->tmp_table_param.recinfo,
                                  (unit->first_select()->options |
                                   thd->variables.option_bits | TMP_TABLE_ALL_COLUMNS)))
      DBUG_RETURN(TRUE);
  }
  if (open_tmp_table(table))
    DBUG_RETURN(TRUE);
  table->file->extra(HA_EXTRA_WRITE_CACHE);
  table->file->extra(HA_EXTRA_IGNORE_DUP_KEY);
  DBUG_RETURN(FALSE);
}


void TABLE_LIST::register_as_derived_with_rec_ref(With_element *rec_elem)