# How to do multiplication on a field like sum function do?

**URL:** https://discuss.elastic.co/t/how-to-do-multiplication-on-a-field-like-sum-function-do/215690
**Category:** Elasticsearch
**Created:** [January 20, 2020, 8:56am UTC](https://discuss.elastic.co/t/how-to-do-multiplication-on-a-field-like-sum-function-do/215690 "2020-01-20T08:56:09Z")
**Posts on this page:** 2
**Page:** 1

<div class="post-metadata">

### Author: ![DeeeFOX](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/deeefox/32/49566_2.png) [@DeeeFOX](https://discuss.elastic.co/u/DeeeFOX)
#### Post date: [January 20, 2020, 8:56am UTC](https://discuss.elastic.co/t/how-to-do-multiplication-on-a-field-like-sum-function-do/215690/1 "2020-01-20T08:56:09Z")

</div>

As title said, how to do multiplication on a field like sum function do like:

```
POST tsdb_alias/_search?routing=metric_name1
{
  "query": {
    "bool": {
      "filter": [
        {
          "term": {
            "metric": "metric_name1"
          }
        },
        {
          "term": {
            "t.key1": "val1"
          }
        },
        {
          "range": {
            "@timestamp": {
              "gte": "2020-01-01",
              "lte": "2020-01-02"
            }
          }
        }
      ]
    }
  },
  "aggs": {
    "ts": {
      "date_histogram": {
        "field": "@timestamp",
        "interval": "1h"
      },
      "aggs": {
        "res": {
          "multiplier": {
            "field": "f.name1"
          }
        }
      }
    }
  },
  "size": 0
}

```

In our use case, we use es as tsdb that described in

[my other topic](https://discuss.elastic.co/t/can-es-not-to-store-original-keyword-content-but-a-mapping-num-value-4-save-space/215664)

and data we store are look like:

```
{
	"metric": "metric_name",
	"@timestamp": "2020-01-01T01:01:01",
	"t": {
		"key1": "val1",
		"key2": "val2"
	},
	"f": {
		"name1": 1.2,
		"name2": 2.3
	}
}
```

---

<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: [February 17, 2020, 8:56am UTC](https://discuss.elastic.co/t/how-to-do-multiplication-on-a-field-like-sum-function-do/215690/2 "2020-02-17T08:56:12Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.