# Script\_score query with cosineSimularity on alias

**URL:** <https://discuss.elastic.co/t/script-score-query-with-cosinesimularity-on-alias/321700>\
**Category:** Elasticsearch\
**Created:** [December 20, 2022, 10:19pm UTC](https://discuss.elastic.co/t/script-score-query-with-cosinesimularity-on-alias/321700 "2022-12-20T22:19:45Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![KentLee](https://avatars.discourse-cdn.com/v4/letter/k/e274bd/32.png) [@KentLee](https://discuss.elastic.co/u/KentLee)\
**Post date:** [December 20, 2022, 10:19pm UTC](https://discuss.elastic.co/t/script-score-query-with-cosinesimularity-on-alias/321700/1 "2022-12-20T22:19:45Z")

</div>

I have an alias created with several different indices and each index has multiple dense\_vector fields. I want to perform a script\_score search on all the dense\_vector field with the cosineSimularity function.  
For example:

```auto
"query": {
        "script_score": {
            "query": {
                "match_all": {}
            },
            "script": {
                "source": "cosineSimilarity(params.query_vector, 'A_vector')+cosineSimilarity(params.query_vector, 'B_vector')+cosineSimilarity(params.query_vector, 'C_vector')+cosineSimilarity(params.query_vector, 'D_vector')+cosineSimilarity(params.query_vector, 'E_vector')+cosineSimilarity(params.query_vector, 'F_vector')+cosineSimilarity(params.query_vector, 'G_vector')+cosineSimilarity(params.query_vector, 'H_vector')+cosineSimilarity(params.query_vector, 'I_vector')",
                "params": {
                    "query_vector": [
                        0.021623458713293076, ...
                        0.10179898142814636
                    ]
                }
            }
        }
    }

```

The problem I encountered is that not all indices have the same vector field. Is there any way I can check if the field exist in the script and return a 0 value if field not exists?

Thanks!

---

<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:** [January 17, 2023, 10:20pm UTC](https://discuss.elastic.co/t/script-score-query-with-cosinesimularity-on-alias/321700/2 "2023-01-17T22:20:40Z")

</div>

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