title: Elasticsearch phrase prefix query on multiple fields
body: <p>I'm new to ES and I'm trying to build a query that would use phrase_prefix for multiple fields so I dont have to search more than once.</p>
  
  <p>Here's what I've got so far:</p>
  
  <pre><code>{ 
      "query" : { 
          "text" : { 
              "first_name" : { 
                  "query" : "Gustavo", 
                  "type" : "phrase_prefix" 
              }
          } 
      }
  }'
  </code></pre>
  
  <p>Does anybody knows how to search for more than one field, say "last_name" ?</p>