/**
* @internal Avoid the unnecessary expense of joining if we're just counting
* all the tags.
*/
public function getSelectForCount($params = array())
{
if (!$params) {
$select = new Omeka_Db_Select();
$db = $this->getDb();
$select->from(array('tags' => $db->Tag), array('COUNT(*)'));
} else {
$select = parent::getSelectForCount($params);
}
return $select;
}
