title: Different queryset, same result
body: <p>I'm currently learning Model Manager and Custom Queryset. While trying to understand the implementation of it, I somehow just don't get how the difference between these two calls. I like to include the all() because its more understandable. However I would like to know if there's any difference.</p>
  <pre><code>1. Post.objects.all().filter(status=1).order_by('-updated')
  2. Post.objects.filter(status=1).order_by('-updated')
  
  &gt;&gt;&gt; from django.contrib.auth.models import User
  &gt;&gt;&gt; from blog.models import Post
  &gt;&gt;&gt; user= User.objects.filter(username='chair').first()
  &gt;&gt;&gt; Post.objects.filter(author= user)
  &lt;PostQuerySet [&lt;Post: 111 updateeee&gt;, &lt;Post: 22222&gt;, &lt;Post: draftdraft&gt;]&gt;
  &gt;&gt;&gt; Post.objects.all().filter(author= user)
  &lt;PostQuerySet [&lt;Post: 111 updateeee&gt;, &lt;Post: 22222&gt;, &lt;Post: draftdraft&gt;]&gt;
  
  </code></pre>