title: Kusto join rows using an id and display the contents as an array
body: <p>Is there a way to join multiple rows by a distinct id and show those rows as an array or a comma separated string?</p>
  <p>e.g.</p>
  <pre><code>| id | value |
  |  1 | A     |
  |  1 | B     |
  |  1 | C     |
  </code></pre>
  <p>into</p>
  <pre><code>| id | values |
  |  1 | A,B,C  |
  </code></pre>