# How can I return results having a unique id field (i.e. no duplicates) when requesting a multisearch or search?

**URL:** <https://discuss.elastic.co/t/how-can-i-return-results-having-a-unique-id-field-i-e-no-duplicates-when-requesting-a-multisearch-or-search/237346>\
**Category:** Elasticsearch\
**Created:** [June 16, 2020, 5:00pm UTC](https://discuss.elastic.co/t/how-can-i-return-results-having-a-unique-id-field-i-e-no-duplicates-when-requesting-a-multisearch-or-search/237346 "2020-06-16T17:00:07Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![aorona](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/aorona/32/67827_2.png) [@aorona](https://discuss.elastic.co/u/aorona)\
**Post date:** [June 16, 2020, 5:00pm UTC](https://discuss.elastic.co/t/how-can-i-return-results-having-a-unique-id-field-i-e-no-duplicates-when-requesting-a-multisearch-or-search/237346/1 "2020-06-16T17:00:07Z")

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I am running a query against my index and when I do a multisearch or search, I get duplicate results.

I have specified the \_id with a unique value, but I am still seeing duplicates.

Is there a filter aggregation, or other option that I must apply so that the hits and total that I get back from elasticsearch does not include duplicates?

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**Author:** ![Vinayak\_Sapre](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/vinayak_sapre/32/45939_2.png) [@Vinayak\_Sapre](https://discuss.elastic.co/u/Vinayak_Sapre)\
**Post date:** [June 17, 2020, 3:25am UTC](https://discuss.elastic.co/t/how-can-i-return-results-having-a-unique-id-field-i-e-no-duplicates-when-requesting-a-multisearch-or-search/237346/2 "2020-06-17T03:25:19Z")

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@aorona  
Multi Search runs multiple independent search queries, so duplicates are expected. A document may match query 1 but not query 2. Merging search results does not make sense. Aggregates work at single query level. Multi Search is a batching mechanism not a query.

But \_search should not return duplicates. Can you please post you mappings, some sample docs and the search query?

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 15, 2020, 3:25am UTC](https://discuss.elastic.co/t/how-can-i-return-results-having-a-unique-id-field-i-e-no-duplicates-when-requesting-a-multisearch-or-search/237346/3 "2020-07-15T03:25:25Z")

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