# ELASTICSEARCH - Count unique value with a condition

**URL:** <https://discuss.elastic.co/t/elasticsearch-count-unique-value-with-a-condition/244983>\
**Category:** Elasticsearch\
**Created:** [August 14, 2020, 10:01am UTC](https://discuss.elastic.co/t/elasticsearch-count-unique-value-with-a-condition/244983 "2020-08-14T10:01:31Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![Miguel\_BA](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/miguel_ba/32/46926_2.png) [@Miguel\_BA](https://discuss.elastic.co/u/Miguel_BA)\
**Post date:** [August 14, 2020, 10:01am UTC](https://discuss.elastic.co/t/elasticsearch-count-unique-value-with-a-condition/244983/1 "2020-08-14T10:01:31Z")

</div>

I would like a query which it returns the number of times a field is repeated, according to the unique value of another field I have this json:

```auto
          "name" : james,
          "city" : "chicago" <----------- same
        },
        {
          "name" : james,
          "city" : "san francisco"
        },
        {
          "name" : james,
          "city" : "chicago" <-----------same
        },
         {
          "name" : Mike,
          "obtained_from" : "chicago"
        },
         {
          "name" : Mike,
          "obtained_from" : "texas"<-----------same
        },
         {
          "name" : Mike,
          "obtained_from" : "texas"<-----------same
        },
         {
          "name" : Peter,
          "obtained_from" : "chicago"
        },

```

I want to make a query where I count based on the unique value of two fields. For example, james is equal to 2, because there are two equal fields (name: james, city, chicago) and a different field (name: james, city: san francisco) The output would then be the following:

```auto
 {
    "key" : "james",
    "doc_count" : 2
  },
  {
    "key" : "Mike",
    "doc_count" : 2
  },
  {
    "key" : "Peter",
    "doc_count" : 3
  },

```

It is possible to do a single value count of two fields?

---

<div class="post-metadata">

**Author:** ![spinscale](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/spinscale/32/25011_2.png) [@spinscale](https://discuss.elastic.co/u/spinscale)\
**Post date:** [August 14, 2020, 10:34am UTC](https://discuss.elastic.co/t/elasticsearch-count-unique-value-with-a-condition/244983/2 "2020-08-14T10:34:27Z")

</div>

the `cardinality` aggregation only supports a single field. You could use [scripting](https://www.elastic.co/guide/en/elasticsearch/reference/7.8/search-aggregations-metrics-cardinality-aggregation.html#_script_4) to concatenate those two fields though. after using a `terms` aggregation on the `name` field.

would that work in your case?

---

<div class="post-metadata">

**Author:** ![Miguel\_BA](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/miguel_ba/32/46926_2.png) [@Miguel\_BA](https://discuss.elastic.co/u/Miguel_BA)\
**Post date:** [August 14, 2020, 10:39am UTC](https://discuss.elastic.co/t/elasticsearch-count-unique-value-with-a-condition/244983/3 "2020-08-14T10:39:42Z")

</div>

Thank you for your answer.  
I going to try your porpuse and get documentation about scripting

---

<div class="post-metadata">

**Author:** ![Miguel\_BA](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/miguel_ba/32/46926_2.png) [@Miguel\_BA](https://discuss.elastic.co/u/Miguel_BA)\
**Post date:** [August 14, 2020, 12:47pm UTC](https://discuss.elastic.co/t/elasticsearch-count-unique-value-with-a-condition/244983/4 "2020-08-14T12:47:01Z")

</div>

Could we concatenate with a scripting two fiedls?

---

<div class="post-metadata">

**Author:** ![spinscale](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/spinscale/32/25011_2.png) [@spinscale](https://discuss.elastic.co/u/spinscale)\
**Post date:** [August 14, 2020, 1:08pm UTC](https://discuss.elastic.co/t/elasticsearch-count-unique-value-with-a-condition/244983/5 "2020-08-14T13:08:20Z")

</div>

the example in documentation I linked is doing exactly that.

---

<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:** [September 11, 2020, 1:08pm UTC](https://discuss.elastic.co/t/elasticsearch-count-unique-value-with-a-condition/244983/6 "2020-09-11T13:08:20Z")

</div>

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