# How can i update all the values in specific field using update\_by\_query?

**URL:** https://discuss.elastic.co/t/how-can-i-update-all-the-values-in-specific-field-using-update-by-query/207875
**Category:** Elasticsearch
**Created:** [November 14, 2019, 11:42am UTC](https://discuss.elastic.co/t/how-can-i-update-all-the-values-in-specific-field-using-update-by-query/207875 "2019-11-14T11:42:05Z")
**Posts on this page:** 4
**Page:** 1

<div class="post-metadata">

### Author: ![lakmina\_chathurya](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/lakmina_chathurya/32/45418_2.png) [@lakmina\_chathurya](https://discuss.elastic.co/u/lakmina_chathurya)
#### Post date: [November 14, 2019, 11:42am UTC](https://discuss.elastic.co/t/how-can-i-update-all-the-values-in-specific-field-using-update-by-query/207875/1 "2019-11-14T11:42:05Z")

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```
    POST /my_metric/_update_by_query
{
    "query": {
        "bool": {
            "must": [
                {
                    "term": {"timestamp": "1324987657365"}
                    
                }
            ]
        }
  },
  "script": "ctx._source.timestamp = '1573775999999'"
}

```

this query update only 1324987657365 value. i need to update all the values in timestamp field. How can i do that

---

<div class="post-metadata">

### Author: ![HenningAndersen](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/henningandersen/32/48188_2.png) [@HenningAndersen](https://discuss.elastic.co/u/HenningAndersen)
#### Post date: [November 14, 2019, 11:50am UTC](https://discuss.elastic.co/t/how-can-i-update-all-the-values-in-specific-field-using-update-by-query/207875/2 "2019-11-14T11:50:00Z")

</div>

@lakmina_chathurya,

if you want to update all docs in the index, you can simply omit the "query" part. This will make Elasticsearch update all docs.

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<div class="post-metadata">

### Author: ![lakmina\_chathurya](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/lakmina_chathurya/32/45418_2.png) [@lakmina\_chathurya](https://discuss.elastic.co/u/lakmina_chathurya)
#### Post date: [November 14, 2019, 12:19pm UTC](https://discuss.elastic.co/t/how-can-i-update-all-the-values-in-specific-field-using-update-by-query/207875/3 "2019-11-14T12:19:19Z")

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> [@HenningAndersen](#):
>
> query

@HenningAndersen Thank you very much!

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<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: [December 12, 2019, 12:19pm UTC](https://discuss.elastic.co/t/how-can-i-update-all-the-values-in-specific-field-using-update-by-query/207875/4 "2019-12-12T12:19:31Z")

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