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elasticsearch/docs/reference/query-languages/esql/functions-operators/search-functions.md

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Search functions
https://www.elastic.co/guide/en/elasticsearch/reference/current/esql-functions-operators.html#esql-search-functions

{{esql}} Search functions [esql-search-functions]

Use these functions for full-text search and semantic search.

Get started with {{esql}} for search use cases with our hands-on tutorial.

Full text functions can be used to match multivalued fields. A multivalued field that contains a value that matches a full text query is considered to match the query.

Full text functions are significantly more performant for text search use cases on large data sets than using pattern matching or regular expressions with LIKE or RLIKE

See full text search limitations for information on the limitations of full text search.

{{esql}} supports these full-text search functions:

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