Question

我的数据如下：

{"action":"CREATE","docs":1,"date":"2016 Jun 26 12:00:12","userid":"1234"}
{"action":"REPLACE","docs":2,"date":"2016 Jun 27 12:00:12","userid":"1234"}
{"action":"REPLACE","docs":1,"date":"2016 Jun 27 13:00:12","userid":"1234"}
{"action":"CREATE","docs":1,"date":"2016 Jun 28 12:00:12","userid":"3431"}
{"action":"REPLACE","docs":2,"date":"2016 Jun 28 13:00:12","userid":"3431"}
{"action":"CREATE","docs":1,"date":"2016 Jun 29 12:00:12","userid":"9999"}

要按日期（降序）获取每个唯一用户订单的记录，我使用了如下所示的热门点击：

"aggs": {
            "user_bucket": {
                "terms": {
                    "field": "userid"
                },
                "aggs": {
                    "user_latest_count": {
                        "top_hits": {
                            "size": 1,
                            "sort": [
                                {
                                    "data": {
                                        "order": "desc"
                                    }
                                }
                            ],
                            "_source": {
                                "include": [
                                    "docs"
                                ]
                            }
                        }
                    }
                }
            }
        }

以上查询的结果如下：

{"action":"REPLACE","docs":1,"date":"2016 Jun 27 13:00:12","userid":"1234"}
{"action":"REPLACE","docs":2,"date":"2016 Jun 28 13:00:12","userid":"3431"}
{"action":"CREATE","docs":1,"date":"2016 Jun 29 12:00:12","userid":"9999"}

现在，我想进一步聚合，以便结果如下：

{"sum_of_different_buckets": 4}

但不确定如何 SUM 字段＆＃34; docs ＆＃34;从上面得到的结果中得出的值。

Answer 1

您还可以在聚合中任意嵌套聚合，以从数据中提取所需的汇总数据。可能低于样本作品。

@IBAction func segmentedControlTapped(sender: AnyObject) {
    if segmentedControl.selectedSegmentIndex == 1 {
        self.viewUIPickerView.viewWithTag(10)?.hidden = false
        self.viewUIPickerView2.viewWithTag(11)?.hidden = true
    }else {
        self.viewUIPickerView2.viewWithTag(11)?.hidden = false
        self.viewUIPickerView.viewWithTag(10)?.hidden = true
    }

    self.tabBarController!.tabBar.hidden = true

}

Answer 2

您可以在 top_hit 的平行级别上具有其他聚合，但是在以下 top_hit 中不能具有任何 sub_aggregation 。 elasticsearch不支持它。 here is the link to github issue

但是，如果您希望总和处于同一水平，则可以使用以下方法。

"aggs": { "top_hits_agg": { "top_hits": { "size": 10, "_source": { "includes": ["docs"] } } }, "sum_agg": { "sum": { "field": "docs" } } }

顶级命中的ElasticSearch聚合

2 个答案: