--- layout: default title: Update by query parent: Document APIs grand_parent: REST API reference nav_order: 50 --- # Update by query Introduced 1.0 {: .label .label-purple} You can include a query and a script as part of your update request so OpenSearch can run the script to update all of the documents that match the query. ## Example ```json POST test-index1/_update_by_query { "query": { "term": { "oldValue": 10 } }, "script" : { "source": "ctx._source.oldValue += params.newValue", "lang": "painless", "params" : { "newValue" : 20 } } } ``` ## Path and HTTP methods ``` POST , /_update_by_query ``` ## URL parameters All URL parameters are optional. Parameter | Type | Description :--- | :--- | :--- | :--- <target-index> | String | Comma-separated list of indices to update. To update all indices, use * or omit this parameter. allow_no_indices | String | If false, the request returns an error if wildcard expressions match closed or missing indices. Default is true. analyzer | String | Analyzer to use in the query string. analyze_wildcard | Boolean | Whether the operation should include wildcard and prefix queries in the analysis. Default is false. conflicts | String | Specifies whether the operation should continue if the request runs into version conflicts. Valid options are `abort` and `proceed`. Default is `abort`. default_operator | String | The default operator the string query should use. Valid options are `AND` and `OR`. Default is `OR`. df | String | The default field when the query string does not have a field prefix. expand_wildcards | String | Specifies the type of index that wildcard expressions can match. Supports comma-separated values. Valid values are `all` (match any index), `open` (match open, non-hidden indices), `closed` (match closed, non-hidden indices), `hidden` (match hidden indices), and `none` (deny wildcard expressions). Default is `open`. from | Integer | The starting index to search from. Default is 0. ignore_unavailable | Boolean | Whether to exclude missing or closed indices in the response. Default is false. lenient | Boolean | Whether OpenSearch should ignore format-based query failures (for example, querying an integer field for a string). Default is false. max_docs | Integer | Maximum number of documents the request should process. Default is all documents. pipeline | String | ID of the pipeline to use to process documents. preference | String | The node or shard OpenSearch should perform the operation on. q | String | Query in the Lucene query string syntax. request_cache | Boolean | Whether OpenSearch should use the request cache for the operation. Default is whether it's enabled in the index's settings. refresh | Boolean | Specifies whether OpenSearch should refresh shards involved in the operation to make the operation visible to searching. requests_per_second | Integer | Specifies the request's throttling in sub-requests per second. Default is -1, which means no throttling. routing | String | Value used to route the operation to a specific shard. scroll | Time | How long to keep the search context open. scroll_size | Integer | Size of the operation's scroll request. Default is 1000. search_type | String | Whether OpenSearch should use global term and document frequencies calculating revelance scores. Valid choices are `query_then_fetch` and `dfs_query_then_fetch`. `query_then_fetch` scores documents using local term and document frequencies for the shard. It’s usually faster but less accurate. `dfs_query_then_fetch` scores documents using global term and document frequencies across all shards. It’s usually slower but more accurate. Default is `query_then_fetch`. search_timeout | Time | Amount of time until timeout for the search request. Default is no timeout. slices | Integer | Number of sub-tasks OpenSearch should divide this task into. Default is 1, which means OpenSearch should not divide this task. sort | String | A comma-separated list of <field> : <direction> pairs to sort by. _source | String | Whether to include the `_source` field in the response. _source_excludes | String | A comma-separated list of source fields to exclude from the response. _source_includes | String | A comma-separated list of source fields to include in the response. stats | String | Value to associate with the request for additional logging. terminate_after | Integer | The maximum number of documents OpenSearch should process before terminating the request. timeout | Time | How long the operation should wait from a response from active shards. Default is `1m`. version | Boolean | Whether to include the document version as a match. wait_for_active_shards | String | The number of shards that must be active before OpenSearch executes the operation. Valid values are `all` or any integer up to the total number of shards in the index. Default is 1, which is the primary shard. ## Request body To update your indices and documents by query, you must include a [query]({{site.baseurl}}{{site.url}}/opensearch/query-dsl/index) and a script in the request body that OpenSearch can run to update your documents. If you don't specify a query, then every document in the index gets updated. ```json { "query": { "term": { "oldValue": 20 } }, "script" : { "source": "ctx._source.oldValue += params.newValue", "lang": "painless", "params" : { "newValue" : 10 } } } ``` ## Response ```json { "took": 21, "timed_out": false, "total": 1, "updated": 1, "deleted": 0, "batches": 1, "version_conflicts": 0, "noops": 0, "retries": { "bulk": 0, "search": 0 }, "throttled_millis": 0, "requests_per_second": -1.0, "throttled_until_millis": 0, "failures": [] } ``` ## Response body fields Field | Description :--- | :--- took | The amount of time in milliseconds OpenSearch needed to complete the operation. timed_out | Whether any update requests during the operation timed out. total | Total number of documents processed. updated | Total number of documents updated. batches | Number of scroll responses the request processed. version_conflicts | Number of conflicts the request ran into. noops | How many update requests OpenSearch ignored during the operation. This field always returns 0. retries | The number of bulk and search retry requests. throttled_millis | Number of throttled milliseconds during the request. requests_per_second | Number of requests executed per second during the operation. throttled_until_millis | The amount of time until OpenSearch executes the next throttled request. Always equal to 0 in an update by query request. failures | Any failures that occur during the request.