Method exec

sql/sql_tvc.cc:426–463

*/

bool table_value_constr::exec(SELECT_LEX *sl)
{
  DBUG_ENTER("table_value_constr::exec");
  List_iterator_fast<List_item> li(lists_of_values);
  List_item *elem;
  THD *cur_thd= sl->parent_lex->thd;
  ha_rows send_records= 0;
  int rc=0;
  
  if (select_options & SELECT_DESCRIBE)
    DBUG_RETURN(false);

  if (result->send_result_set_metadata(sl->item_list,
                                       Protocol::SEND_NUM_ROWS |
                                       Protocol::SEND_EOF))
  {
    DBUG_RETURN(true);
  }

  fix_rownum_pointers(sl->parent_lex->thd, sl, &send_records);

  while ((elem= li++))
  {
    cur_thd->get_stmt_da()->inc_current_row_for_warning();
    if (send_records >= sl->master_unit()->lim.get_select_limit())
      break;
    rc= result->send_data_with_check(*elem, sl->master_unit(), send_records);
    if (!rc)
      send_records++;
    else if (rc > 0)
      DBUG_RETURN(true);
  }

  if (result->send_eof())
    DBUG_RETURN(true);

  DBUG_RETURN(false);
}


/**