[FLOW3-general] Getting all Values of some Objects Property

[marc neuhaus]

Hey!

I was wondering how i would accomplish something equivalent to this:
    "SELECT date FROM posts GROUP BY date;"

My first idea was to get All Objects through findAll() an iterate over all
of them and compiling an array of the Used Properties:
    for($posts as $post)
         $dates[$post->getDate()]++;

Problem with this is, that this would take way to long if there are lots of
$posts.

Is this the only way to do something like this at the moment?
Is something planned/specified to provide a better way to retrieve something
like this?

Greetings Marc