Difficulty combining bool and range query, elastic search
<p>I'm having a bit of trouble understanding the various ways to nest queries in elastic search. Here is an example of what my indexed data looks like..</p>

<pre><code>{
    "Underlying" : "Eurodollar",
    "Expiration" : "20160315"
},
{
    "Underlying" : "Eurodollar",
    "Expiration" : "20160415"
},
{
    "Underlying" : "Eurodollar",
    "Expiration" : "20160515"
}
</code></pre>

<p>So, I was able to run a query like this</p>

<pre><code>{
    "query" : {
        "range" : {
            "Expiration" : {
                "gte" : "20160315",
                "lte" : "20160515"
            }
        }
    }
}
</code></pre>

<p>And as expected, I get all entries. HOWEVER, suppose I ALSO have indexed entries like this.</p>

<pre><code>{
   "Underlying" : "Something else",
   "Expiration" : "20160415"
}
</code></pre>

<p>I don't want the "Something else" results to come back, so I now attempt to do something like this.</p>

<pre><code>{
    "query" : {
        "bool" : {
            "must" : [
                {
                    "term" : {
                        "Underlying" : {
                            "value" : "eurodollar"
                        }
                    }
                }
            ]
        },
        "range" : {
            "Expiration" : {
                "gte" : "20160315",
                "lte" : "20160515"
            }
        }
    }
}
</code></pre>

<p>But I am getting an error</p>

<pre><code>RequestError(400, u'SearchPhaseExecutionException[Failed to execute phase [query], all shards failed; shardFailures {[cCrh939sR7yHdKgawRi6Sw][test-index][0]: SearchParseException[[test-index][0]: query[Expiration:[20160215 TO 20160415]],from[-1],size[-1]: Parse Failure [Failed to parse source [{"query": {"range": {"Expiration": {"gte": "20160215", "lte": "20160415"}}, "bool": {"must": [{"term": {"Underlying": {"value": "eurodollar"}}}]}}}]]]; nested: ElasticsearchParseException[Expected field name but got START_OBJECT "bool"]; }{[cCrh939sR7yHdKgawRi6Sw][test-index][1]: SearchParseException[[test-index][1]: query[Expiration:[20160215 TO 20160415]],from[-1],size[-1]: Parse Failure [Failed to parse source [{"query": {"range": {"Expiration": {"gte": "20160215", "lte": "20160415"}}, "bool": {"must": [{"term": {"Underlying": {"value": "eurodollar"}}}]}}}]]]; nested: ElasticsearchParseException[Expected field name but got START_OBJECT "bool"]; }]', {u'status': 400, u'error': u'SearchPhaseExecutionException[Failed to execute phase [query], all shards failed; shardFailures {[cCrh939sR7yHdKgawRi6Sw][test-index][0]: SearchParseException[[test-index][0]: query[Expiration:[20160215 TO 20160415]],from[-1],size[-1]: Parse Failure [Failed to parse source [{"query": {"range": {"Expiration": {"gte": "20160215", "lte": "20160415"}}, "bool": {"must": [{"term": {"Underlying": {"value": "eurodollar"}}}]}}}]]]; nested: ElasticsearchParseException[Expected field name but got START_OBJECT "bool"]; }{[cCrh939sR7yHdKgawRi6Sw][test-index][1]: SearchParseException[[test-index][1]: query[Expiration:[20160215 TO 20160415]],from[-1],size[-1]: Parse Failure [Failed to parse source [{"query": {"range": {"Expiration": {"gte": "20160215", "lte": "20160415"}}, "bool": {"must": [{"term": {"Underlying": {"value": "eurodollar"}}}]}}}]]]; nested: ElasticsearchParseException[Expected field name but got START_OBJECT "bool"]; }]'})
</code></pre>

<p>The most relevant text of the error seems to be this</p>

<pre><code> Expected field name but got START_OBJECT "bool"
</code></pre>

<p>I know my bool/term query is working, because I ran just this</p>

<pre><code>{
    "query" : {
        "bool" : {
            "must" : [
                {
                    "term" : {
                        "Underlying" : {
                            "value" : "eurodollar"
                        }
                    }
                }
            ]
        }
    }
}
</code></pre>

<p>And I got back the expected results.</p>

<p>I think this illustrates my situation well enough. How do I properly combine these queries, given that my guess as to how they should be combined is incorrect.</p>