| 1 query.inc | public MergeQuery::isNull($field) |
Sets a condition that the specified field be NULL.
Parameters
string $field: The name of the field to check.
Return value
QueryConditionInterface: The called object.
Overrides QueryConditionInterface::isNull
File
- core/
includes/ database/ query.inc, line 1554 - Non-specific Database query code. Used by all engines.
Class
- MergeQuery
- General class for an abstracted MERGE query operation.
Code
public function isNull($field) {
$this->condition->isNull($field);
return $this;
}