curl -XPOST 'localhost:9200/bank/_search?pretty' -d ' { "size": 0, "aggs": { "group_by_state": { "terms": { "field": "state" } } } }'查询结果
类似SQL中的 SELECT state, COUNT(*) FROM bank GROUP BY state ORDER BY COUNT(*) DESC
参考:https://www.elastic.co/guide/en/elasticsearch/reference/1.7/_executing_aggregations.html#_executing_aggregations