public function deleteById($id)
	{
		$sql = "DELETE FROM `$this->tableName` WHERE `$this->pkColName` = :entityId ";

		$stmt = $this->pdo->prepare($sql);
		$stmt->bindParam(':entityId', intval($id), \PDO::PARAM_INT);
		$res = $stmt->execute();

		return ($res !== false && $stmt->rowCount() === 1);
	}