public static function getLast($task_id = null, $count = 100)
{
$db = (new Query())->select('task_runs.*, tasks.command')->from(self::tableName())->join('LEFT JOIN', 'tasks', 'tasks.task_id = task_runs.task_id')->orderBy('task_runs.task_run_id desc')->limit($count);
if ($task_id) {
$db->where('task_runs.task_id=:task_id', array(':task_id' => $task_id));
}
return $db->all();
}