# I have 2 aggregation in my query for Dau, Mau. how to combine them to find the ratio. have tried with bucket\_script, scripted metric. nothing works,

**URL:** <https://discuss.elastic.co/t/i-have-2-aggregation-in-my-query-for-dau-mau-how-to-combine-them-to-find-the-ratio-have-tried-with-bucket-script-scripted-metric-nothing-works/338373>\
**Category:** Elasticsearch\
**Created:** [July 14, 2023, 6:37am UTC](https://discuss.elastic.co/t/i-have-2-aggregation-in-my-query-for-dau-mau-how-to-combine-them-to-find-the-ratio-have-tried-with-bucket-script-scripted-metric-nothing-works/338373 "2023-07-14T06:37:14Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![Dev\_Profile](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dev_profile/32/123438_2.png) [@Dev\_Profile](https://discuss.elastic.co/u/Dev_Profile)\
**Post date:** [July 14, 2023, 6:37am UTC](https://discuss.elastic.co/t/i-have-2-aggregation-in-my-query-for-dau-mau-how-to-combine-them-to-find-the-ratio-have-tried-with-bucket-script-scripted-metric-nothing-works/338373/1 "2023-07-14T06:37:14Z")

</div>

Below is my query. is there any way to access multi-buckets value to manipulate n return the results.

```auto
{
  "_source": false,
  "aggs": {
    "nested_dau": {
      "nested": {
        "path": "dau"
      },
      "aggs": {
        "group_by_month": {
          "date_histogram": {
            "field": "dau.date",
            "calendar_interval": "month"
          },
          "aggs": {
            "sum_loggedin_users": {
              "sum": {
                "field": "dau.loggedinusers"
              }
            }
          }
        },
        "group_by_day": {
          "date_histogram": {
            "field": "dau.date",
            "calendar_interval": "day"
          },
          "aggs": {
            "sum_loggedin_users": {
              "sum": {
                "field": "dau.loggedinusers"
              }
            }
          }
        }
      }
    }
  }
}

```

---

<div class="post-metadata">

**Author:** ![PodarcisMuralis](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/podarcismuralis/32/122606_2.png) [@PodarcisMuralis](https://discuss.elastic.co/u/PodarcisMuralis)\
**Post date:** [July 14, 2023, 9:05pm UTC](https://discuss.elastic.co/t/i-have-2-aggregation-in-my-query-for-dau-mau-how-to-combine-them-to-find-the-ratio-have-tried-with-bucket-script-scripted-metric-nothing-works/338373/2 "2023-07-14T21:05:47Z")

</div>

Maybe?

```auto
{
  "_source": false,
  "aggs": {
    "nested_dau": {
      "nested": {
        "path": "dau"
      },
      "aggs": {
        "group_by_month": {
          "date_histogram": {
            "field": "dau.date",
            "calendar_interval": "month"
          },
          "aggs": {
            "sum_loggedin_users_month": {
              "sum": {
                "field": "dau.loggedinusers"
              }
            }
          }
        },
        "group_by_day": {
          "date_histogram": {
            "field": "dau.date",
            "calendar_interval": "day"
          },
          "aggs": {
            "sum_loggedin_users_day": {
              "sum": {
                "field": "dau.loggedinusers"
              }
            }
          }
        },
        "ratio": {
          "bucket_selector": {
            "buckets_path": {
              "sumLoggedInMonth": "group_by_month>sum_loggedin_users_month",
              "sumLoggedInDay": "group_by_day>sum_loggedin_users_day"
            },
            "script": "params.sumLoggedInMonth / params.sumLoggedInDay"
          }
        }
      }
    }
  }
}

```

---

<div class="post-metadata">

**Author:** ![Dev\_Profile](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dev_profile/32/123438_2.png) [@Dev\_Profile](https://discuss.elastic.co/u/Dev_Profile)\
**Post date:** [July 17, 2023, 6:58am UTC](https://discuss.elastic.co/t/i-have-2-aggregation-in-my-query-for-dau-mau-how-to-combine-them-to-find-the-ratio-have-tried-with-bucket-script-scripted-metric-nothing-works/338373/3 "2023-07-17T06:58:28Z")

</div>

getting below exception. How to fix this ? TIA.

```auto
{
  "error": {
    "root_cause": [],
    "type": "search_phase_execution_exception",
    "reason": "",
    "phase": "fetch",
    "grouped": true,
    "failed_shards": [],
    "caused_by": {
      "type": "class_cast_exception",
      "reason": "class org.elasticsearch.search.aggregations.bucket.nested.InternalNested cannot be cast to class org.elasticsearch.search.aggregations.InternalMultiBucketAggregation (org.elasticsearch.search.aggregations.bucket.nested.InternalNested and org.elasticsearch.search.aggregations.InternalMultiBucketAggregation are in module org.elasticsearch.server@8.3.3 of loader 'app')"
    }
  },
  "status": 500
}

```

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [August 14, 2023, 6:59am UTC](https://discuss.elastic.co/t/i-have-2-aggregation-in-my-query-for-dau-mau-how-to-combine-them-to-find-the-ratio-have-tried-with-bucket-script-scripted-metric-nothing-works/338373/4 "2023-08-14T06:59:11Z")

</div>

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