title: Can I query relations using an INNER JOIN instead of two queries in Eloquent?
body: <p>Can I write something like this:</p>
  
  <pre class="lang-php prettyprint-override"><code>$post = Post::join(['author'])-&gt;find($postId);
  $authorName = $post-&gt;author-&gt;name;
  </code></pre>
  
  <p>To produce only ONE select with inner join (no 2 selects) and without using DB query builder</p>
  
  <pre class="lang-sql prettyprint-override"><code>SELECT
    post.*, 
    author.*
  FROM post
    INNER JOIN author 
      ON author.id = post.author_id
  WHERE post.id = ?
  </code></pre>