# Multi field aggregation with Elasticsearch-kibana **URL:** \ **Category:** Kibana\ **Created:** [October 25, 2017, 9:29pm UTC](https://discuss.elastic.co/t/multi-field-aggregation-with-elasticsearch-kibana/105301 "2017-10-25T21:29:32Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![shethsaam](https://avatars.discourse-cdn.com/v4/letter/s/f1d935/32.png) [@shethsaam](https://discuss.elastic.co/u/shethsaam)\ **Post date:** [October 25, 2017, 9:29pm UTC](https://discuss.elastic.co/t/multi-field-aggregation-with-elasticsearch-kibana/105301/1 "2017-10-25T21:29:32Z")
With kibana devtools, I am trying to create a query to get unique values from multiple fields into a single bucket. I am using cppy\_to to create a new field and plan to find the unique values with aggregation. I need to find a way to put the data from the existing fields into the newly created field. Current Code: ```auto PUT indexme { "mappings": { "my_type": { "properties": { "wlan_da": { "type": "keyword", "copy_to": "full_namesas" }, "wlan_sa": { "type": "keyword", "copy_to": "full_namesas" }, "full_namesas": { "type": "keyword" } } } } } PUT indexme/my_type/1 { "wlan_da": { } "wlan_sa": { } } GET indexme/_search { "aggs": { "testprac_wala2": { "terms": { "field": "full_namesas" } } } } ``` Need help with `PUT indexme/my_type/1`. Let me know if I am wrong somewhere or missing something. New to elastic community ---
**Author:** ![tylersmalley](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/tylersmalley/32/8833_2.png) [@tylersmalley](https://discuss.elastic.co/u/tylersmalley)\ **Post date:** [October 26, 2017, 10:58pm UTC](https://discuss.elastic.co/t/multi-field-aggregation-with-elasticsearch-kibana/105301/2 "2017-10-26T22:58:41Z")
It should look like this: ```auto POST indexme/my_type { "wlan_da": "foo", "wlan_sa": "bar" } ``` You're indexing the properties `wlan_da` and `wlan_sa` which are available on `full_names`. ---
**Author:** ![shethsaam](https://avatars.discourse-cdn.com/v4/letter/s/f1d935/32.png) [@shethsaam](https://discuss.elastic.co/u/shethsaam)\ **Post date:** [October 26, 2017, 11:27pm UTC](https://discuss.elastic.co/t/multi-field-aggregation-with-elasticsearch-kibana/105301/3 "2017-10-26T23:27:58Z")
Hi tylersmalley, Thanks for your suggestions. I am unable to understand what you actually mean by "foo" and" bar". More clear explanation of what I am trying: I have an index called abc which has fields wlan\_da and wlan\_sa. Both this fields have some values. I want to aggregate over this values together in a single bucket to find the unique values in wlan\_da and wlan\_sa field. So in POST indexme/my\_type, I want to insert values from wlan\_sa (index=abc) into wlan\_sa (index=indexme) and values from wlan\_da (index=abc) into wlan\_da (index=indexme) so that later by aggregating on full\_names, I get unique values from both the fields together in a single bucket. ---
**Author:** ![tylersmalley](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/tylersmalley/32/8833_2.png) [@tylersmalley](https://discuss.elastic.co/u/tylersmalley)\ **Post date:** [October 27, 2017, 5:18pm UTC](https://discuss.elastic.co/t/multi-field-aggregation-with-elasticsearch-kibana/105301/4 "2017-10-27T17:18:30Z")
"foo" and "bar" are just test values. The API call creates a document with those values assigned to `wlan_da` and `wlan_sa`. Then, using your search they are aggregated over full\_names. Does that help? ```auto PUT abc { "mappings": { "my_type": { "properties": { "wlan_da": { "type": "keyword", "copy_to": "full_namesas" }, "wlan_sa": { "type": "keyword", "copy_to": "full_namesas" }, "full_namesas": { "type": "keyword" } } } } } POST abc/my_type { "wlan_da": "foo", "wlan_sa": "bar" } GET abc/_search { "aggs": { "testprac_wala2": { "terms": { "field": "full_namesas" } } } } ``` ![52](https://us1.discourse-cdn.com/elastic/original/3X/7/4/747b338fd5b79d9d1ba5ac85c7efbd3ac3210866.png) ---
**Author:** ![shethsaam](https://avatars.discourse-cdn.com/v4/letter/s/f1d935/32.png) [@shethsaam](https://discuss.elastic.co/u/shethsaam)\ **Post date:** [October 27, 2017, 6:04pm UTC](https://discuss.elastic.co/t/multi-field-aggregation-with-elasticsearch-kibana/105301/5 "2017-10-27T18:04:31Z")
Hi tylersmalley, It did helped me. I want to replace test values "foo" and "bar" with existing values in the wlan\_da and wlan\_sa type of some other index (say XYZ). So I am trying to pull values from the wlan\_da and wlan\_sa field of some other index ( XYZ) and trying to put them in the full\_namesas. So How to get this values in place of "foo" and "bar" ?? ---
**Author:** ![tylersmalley](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/tylersmalley/32/8833_2.png) [@tylersmalley](https://discuss.elastic.co/u/tylersmalley)\ **Post date:** [October 27, 2017, 6:33pm UTC](https://discuss.elastic.co/t/multi-field-aggregation-with-elasticsearch-kibana/105301/6 "2017-10-27T18:33:23Z")
If they are already in an index you will need to re-index as copy\_to happens at index time. There is an API to do this: [https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-reindex.html](https://www.elastic.co/guide/en/elasticsearch/reference/current/docs-reindex.html) Here I am creating an index containing only `wlan_da` and `wlan_sa` and adding a single document. ```auto PUT abc { "mappings": { "doc": { "properties": { "wlan_da": { "type": "keyword" }, "wlan_sa": { "type": "keyword" } } } } } POST abc/doc { "wlan_da": "foo", "wlan_sa": "bar" } ``` Then, I create a new index with the mapping containing `copy_to` with the desired `full_namesas` and re-index the data into it. ```auto PUT abc2 { "mappings": { "doc": { "properties": { "wlan_da": { "type": "keyword", "copy_to": "full_namesas" }, "wlan_sa": { "type": "keyword", "copy_to": "full_namesas" }, "full_namesas": { "type": "keyword" } } } } } POST _reindex { "source": { "index": "abc" }, "dest": { "index": "abc2" } } GET abc2/_search { "aggs": { "testprac_wala2": { "terms": { "field": "full_namesas" } } } } ``` ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [November 24, 2017, 6:33pm UTC](https://discuss.elastic.co/t/multi-field-aggregation-with-elasticsearch-kibana/105301/7 "2017-11-24T18:33:26Z")
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