public ConditionAggregateInterface::notExists($field, $function, $langcode = NULL)
Queries for the nonexistence of a field.
string $field:
\Drupal\Core\Entity\Query\QueryInterface::notexists()
public function notExists($field, $function, $langcode = NULL);
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https://api.drupal.org/api/drupal/core!lib!Drupal!Core!Entity!Query!ConditionAggregateInterface.php/function/ConditionAggregateInterface::notExists/8.1.x