Is it possible to do a $lookup aggregation between two databases in Mongodb?
<p>I'm trying to do something like this: </p>

<pre><code>use user; 

db.user.aggregate([
    {
      $lookup:
        {
          from: "organization.organization",
          localField: "organizationId",
          foreignField: "uuid",
          as: "user_org"
        }
   }
])
</code></pre>

<p><code>user</code> and <code>organization</code> are in two different databases. </p>

<p><em>If this is not possible, what are the alternatives?</em></p>