How to get multiple relative fields in terms aggregations?

Elastic Stack Elasticsearch
1 
{
    ...
    "aggs" : {
        "city_info" : {
            "terms" : { "field" : "city_id" }
        }
    }
}

As I see, the agg was something like the sql

SELECT  city_id, COUNT(*) FROM item GROUP BY city_id;

But what I really wanna was like this

SELECT city_id, city_name, province_name, COUNT(*) FROM item GROUP BY city_id;