An array of fields that will be updated.
Type: array
protected $fields = array();
© 2001–2016 by the original authors
Licensed under the GNU General Public License, version 2 and later.
Drupal is a registered trademark of Dries Buytaert.
https://api.drupal.org/api/drupal/core!lib!Drupal!Core!Database!Query!Update.php/property/Update::fields/8.1.x