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;
}