public function ConditionAggregat8b7c:f320:99b9:690f:4595:cd17:293a:c069exists public ConditionAggregat8b7c:f320:99b9:690f:4595:cd17:293a:c069exists($field, $function, $langcode = NULL) Queries for the existence of a field. Parameters  $field: string $langcode: Return value  ConditionInterface Overrides ConditionAggregateInter8b7c:f320:99b9:690f:4595:cd17:293a:c069exists See also  \Drupal\Core\Entity\Query\QueryInter8b7c:f320:99b9:690f:4595:cd17:293a:c069exists() File
 core/lib/Drupal/Core/Entity/Query/Sql/ConditionAggregate.php, line 50  Class
 
ConditionAggregate  Defines the aggregate condition for sql based storage.  Namespace Drupal\Core\Entity\Query\Sql Code public function exists($field, $function, $langcode = NULL) {
  return $this->condition($field, $function, NULL, 'IS NOT NULL', $langcode);
}


    
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