elasticsearch dynamic query - Add another field to each document returned

Question

What I need is very simple, but I am unable to find how to do it in Elasticsearch, possibly because of the complexity of what is required to be done.

Input (two sample J

Answer 1

I did this using script fields. Refer:

http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/search-request-script-fields.html

sample query:

query: {
...
},
script_fields: {
  inventory: {
     script: "doc['car'].value + doc['bike'].value"
  }
}

This would result in a separate fields column with each hit as:

fields: {
    inventory: [450]
}

But, since I also wanted this to be sorted, I ended up using the sort:

query: {
...
},
sort: {
    _script: {
        script: "doc['car'].value + doc['bike'].value",
        type: "number",
        order: "desc"
    }
}

which returned me a sort field with each hit, such as:

sort: [450]