public function selectRunningActivity()
	{
		$stmt = $this->pdo->prepare(<<<EOT
SELECT 
	t1.*,
	t2.ProjectId AS "Project.ProjectId",
	t2.Name AS "Project.Name",
	t2.Description AS "Project.Description",
	t2.Created AS "Project.Created"
FROM `$this->tableName` AS t1 
LEFT JOIN Projects AS t2 ON t1.ProjectId = t2.ProjectId 
WHERE t1.Stopped IS NULL OR t1.Stopped = '' 
LIMIT 1 ;
EOT
		);
		$res = $stmt->execute();

		if ($res === false) {
			return null;
		}

		$row = $stmt->fetch();

		if (!is_array($row)) {
			return null;
		}

		return $this->prepareEntity($row);
	}