title: Elastic Search nested multimatch query
body: <p>So my problem is basically the same as described <a href="http://elasticsearch-users.115913.n3.nabble.com/using-a-nested-object-field-in-a-multi-match-query-td4061613.html">here</a>, however it still remains unanswered on the group.</p>
  
  <p>My mapping:</p>
  
  <pre><code>{
      "abstract": {
          "properties": {
              "summary": {
                  "type": "string"
              }
          }
      },
      "authors": {
          "type": "nested",
          "properties": {
              "first_name": {
                  "type": "string"
              },
              "last_name": {
                   "type": "string"
              }
          }
      }
  }
  </code></pre>
  
  <p>And I would like to perform a full-text search on both of these fields, probably unequally weighted. The query that comes to my mind, but unfortunately doesn't work, would be this:</p>
  
  <pre><code>{
      "query": {
          "bool": {
              "should": [{
                  "multi_match": {
                      "query": "higgs boson",
                      "fields": ["abstract.summary^5", "author.last_name^2"]
                  }
              }]
          }
      }
  }
  </code></pre>
  
  <p>I don't get any results from the authors field, because of its nested mapping. I also can't get rid of the nested property - I use it for aggregations. Any elegant idea how to solve it?</p>