title: calculate sum of values of a specific attribute in a table in rethinkDB?
body: <p>I have the following dataset in my rethinkdb Database. I want to calculate the sum of one attribute named <strong>Min</strong>. I want to sum the all values of 
  <strong>Min</strong>.  </p>
  
  <p>For example with the following dataset the query should return <strong>8</strong></p>
  
  <pre><code>{
   "completedAt": Fri Dec 30 2016 10:05:17 GMT+00:00 ,
    "Min": 0 ,
  }
  {
   "completedAt": Fri Dec 30 2016 10:05:17 GMT+00:00 ,
    "Min": 3 ,
  }
  {
   "completedAt": Fri Dec 30 2016 10:05:17 GMT+00:00 ,
    "Min": 5 ,
  }
  </code></pre>
  
  <p>Can you help?</p>