public function insertMultiple($table, $data)
	{
		echo "    > insert into $table ...";
		$time=microtime(true);
		$builder=$this->getDbConnection()->getSchema()->getCommandBuilder();
		$command=$builder->createMultipleInsertCommand($table,$data);
		$command->execute();
		echo " done (time: ".sprintf('%.3f', microtime(true)-$time)."s)\n";
	}