title: Search entries in Go GAE datastore using partial string as a filter
body: <p>I have a set of entries in the datastore and I would like to search/retrieve them as user types query. If I have full string it's easy:</p>
  
  <pre><code>q := datastore.NewQuery("Products").Filter("Name =", name).Limit(20)
  </code></pre>
  
  <p>but I have no idea how to do it with partial string, please help.</p>