| 1 select.inc | public SelectQueryExtender::isNull($field) |
Sets a condition that the specified field be NULL.
Parameters
string $field: The name of the field to check.
Return value
QueryConditionInterface: The called object.
Overrides QueryConditionInterface::isNull
File
- core/
includes/ database/ select.inc, line 974 - Contains classes and interfaces for Select queries.
Class
- SelectQueryExtender
- The base extender class for Select queries.
Code
public function isNull($field) {
$this->query->isNull($field);
return $this;
}