More-Complicated Searches

Let’s make the search a little more complicated. We still want to find all employees with a last name of Smith, but we want only employees who are older than 30. Our query will change a little to accommodate a filter, which allows us to execute structured searches efficiently:

GET /megacorp/employee/_search
{
    "query" : {
        "bool" : {
            "must" : {
                "match" : {
                    "last_name" : "smith" 
                }
            },
            "filter" : {
                "range" : {
                    "age" : { "gt" : 30 } 
                }
            }
        }
    }
}

Don’t worry about the syntax too much for now; we will cover it in great detail later. Just recognize that we’ve added a filter that performs a range search, and reused the same match query as before. Now our results show only one employee who happens to be 32 and is named Jane Smith:

{
   ...
   "hits": {
      "total":      1,
      "max_score":  0.30685282,
      "hits": [
         {
            ...
            "_source": {
               "first_name":  "Jane",
               "last_name":   "Smith",
               "age":         32,
               "about":       "I like to collect rock albums",
               "interests": [ "music" ]
            }
         }
      ]
   }
}