What is a match query in Elasticsearch?

A match query is one of the most common query types in Elasticsearch. It is used to search for a specific term or phrase in a field.

When a match query is executed, Elasticsearch analyzes the search term to generate a list of terms that are used to search the index. The query then returns any documents that contain at least one of the generated terms. By default, the match query is a “fuzzy” query, meaning that it can handle small spelling mistakes and variations in the search term.

Here is an example of a match query in Elasticsearch:

GET /my_index/_search
{
  "query": {
    "match": {
      "title": "Elasticsearch"
    }
  }
}

In this example, we are searching the `title` field in the `my_index` index for the term “Elasticsearch”. The match query will return any documents that contain the term “Elasticsearch” in the `title` field.

The match query also supports a variety of options, such as controlling the fuzziness of the search term and boosting the relevance of certain terms. This allows for more fine-grained control over the search results.