title: Searching by filed containing a comma in Elasticsearch
body: <p>We have users in our system and their nicknames can contain commas which is the special character that Elasticsearch uses for separate values. I have the following users stored:</p>
  
  <pre><code> {
      "nickname" : "John"
   }
  
   {
      "nickname" : "John,2"
   }
  </code></pre>
  
  <p>If I execute the query <code>nickname:John</code> I get both documents what is not the expected.</p>
  
  <p>I am not sure of what I need. I mean a tokenizer, an analyzer...</p>
  
  <p>Thanks in advance</p>