<?php
  
  $installedVersion=OCP\Config::getAppValue('files_trashbin', 'installed_version');

  if (version_compare($installedVersion, '0.6', '<')) {

  	//size of the trash bin could be incorrect, remove it for all users to
  	//enforce a recalculation during next usage.

  	\OC_DB::dropTable('files_trashsize');

  }