public function SelectQuery::isNull
| 7.x select.inc | public SelectQuery::isNull($field) |
Sets a condition that the specified field be NULL.
Parameters
$field: The name of the field to check.
Return value
QueryConditionInterface The called object.
Overrides QueryConditionInterface::isNull
File
- drupal-7.x/
includes/ database/ select.inc, line 1052
Class
- SelectQuery
- Query builder for SELECT statements.
Code
public function isNull($field) {
$this->where->isNull($field);
return $this;
}