function SelectExtender::isNull

Overrides ConditionInterface::isNull

File

core/lib/Drupal/Core/Database/Query/SelectExtender.php, line 448

Class

SelectExtender

The base extender class for Select queries.

Namespace

Drupal\Core\Database\Query

Code

public function isNull($field) {
    $this->query
        ->isNull($field);
    return $this;
}