Sets a condition in the HAVING clause that the specified field be NULL.

Parameters

$field: The name of the field to check.

Return value

$this

Overrides SelectInterface::havingIsNull

File

core/lib/Drupal/Core/Database/Query/Select.php, line 346

Class

Select

Query builder for SELECT statements.

Namespace

Drupal\Core\Database\Query

Code

public function havingIsNull($field) {
  $this->having
    ->isNull($field);
  return $this;
}

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