--- navigation_title: "Semantic" mapped_pages: - https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-semantic-query.html --- # Semantic query [query-dsl-semantic-query] ::::{warning} This functionality is in beta and is subject to change. The design and code is less mature than official GA features and is being provided as-is with no warranties. Beta features are not subject to the support SLA of official GA features. :::: The `semantic` query type enables you to perform [semantic search](docs-content://solutions/search/semantic-search.md) on data stored in a [`semantic_text`](/reference/elasticsearch/mapping-reference/semantic-text.md) field. ## Example request [semantic-query-example] ```console GET my-index-000001/_search { "query": { "semantic": { "field": "inference_field", "query": "Best surfing places" } } } ``` ## Top-level parameters for `semantic` [semantic-query-params] `field` : (Required, string) The `semantic_text` field to perform the query on. `query` : (Required, string) The query text to be searched for on the field. Refer to [this tutorial](docs-content://solutions/search/semantic-search/semantic-search-semantic-text.md) to learn more about semantic search using `semantic_text` and `semantic` query. ## Hybrid search with the `semantic` query [hybrid-search-semantic] The `semantic` query can be used as a part of a hybrid search where the `semantic` query is combined with lexical queries. For example, the query below finds documents with the `title` field matching "mountain lake", and combines them with results from a semantic search on the field `title_semantic`, that is a `semantic_text` field. The combined documents are then scored, and the top 3 top scored documents are returned. ```console POST my-index/_search { "size" : 3, "query": { "bool": { "should": [ { "match": { "title": { "query": "mountain lake", "boost": 1 } } }, { "semantic": { "field": "title_semantic", "query": "mountain lake", "boost": 2 } } ] } } } ``` You can also use semantic_text as part of [Reciprocal Rank Fusion](/reference/elasticsearch/rest-apis/reciprocal-rank-fusion.md) to make ranking relevant results easier: ```console GET my-index/_search { "retriever": { "rrf": { "retrievers": [ { "standard": { "query": { "term": { "text": "shoes" } } } }, { "standard": { "query": { "semantic": { "field": "semantic_field", "query": "shoes" } } } } ], "rank_window_size": 50, "rank_constant": 20 } } } ```