/**
 * Retrieve list of categories that aren't under a given category,
 * at least one level deep.
 *
 * @param int $categoryId
 * @return array of BusinessCategory objects
 */
public static function getNotUnderCategory($categoryId)
{
	$query = "SELECT `businessCategory`.`id`"
	             .", `businessCategory`.`parentId`"
	             .", `businessCategory`.`name`"
	             .", `businessCategory`.`description`"
	             .", COUNT(`Category`.`categoryId`) AS `numBusinesses` "
	        ."FROM `businessCategory` "
	        ."LEFT JOIN `businessCategory` `ChildCategory` "
	               ."ON `ChildCategory`.`parentId` = `businessCategory`.`id` "
	        ."LEFT JOIN `businessCategoryEntry` `Category` "
	               ."ON `Category`.`categoryId` = `businessCategory`.`id` "
	               ."OR `Category`.`categoryId` = `ChildCategory`.`id` "
	        ."WHERE `businessCategory`.`id` != ? "
	          ."AND `businessCategory`.`parentId` != ? "
	        ."GROUP BY `businessCategory`.`id` "
	        ."ORDER BY `businessCategory`.`name`";
 
	$db = ElcDatabase::getDb();
 
	$results = $db->query($query, array($categoryId, $categoryId));
	if(PEAR::isError($results))
		throw new Exception($results->getMessage());
 
	$businessCategories = array();
	while($results->fetchInto($row, DB_FETCHMODE_ASSOC))
	{
		$businessCategory = new BusinessCategory($row);
		array_push($businessCategories, $businessCategory);
	}
 
	$results->free();
 
	return $businessCategories;
}