SelectExtender::isNull
function SelectExtender::isNull
SelectExtender::isNull($field)
Sets a condition that the specified field be NULL.
Parameters
$field: The name of the field to check.
Return value
\Drupal\Core\Database\Query\ConditionInterface The called object.
Overrides ConditionInterface::isNull
File
- core/lib/Drupal/Core/Database/Query/SelectExtender.php, line 443
Class
- SelectExtender
- The base extender class for Select queries.
Namespace
Drupal\Core\Database\QueryCode
function isNull($field) { $this->query->isNull($field); return $this; }
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https://api.drupal.org/api/drupal/core!lib!Drupal!Core!Database!Query!SelectExtender.php/function/SelectExtender::isNull/8.1.x