can I prioritize more exact matches when using ngram filter in search results?

Question

When using the ngram filter with elasticsearch so that when I search for something like \"test\" I return a document \"latest\", \"tests\" and \"test\". Is there a way to make i

Answer 1

You can copy the field content to fields via the mapping. Example:

  "fullName": {
    "type": "string",
    "search_analyzer": "str_search_analyzer",
    "index_analyzer": "str_index_analyzer",
    "fields": {
        "fullWord": { "type": "string" },
        "raw": { 
            "type":  "string",
            "index": "not_analyzed"
        }
    }
  }

Note that str_index_analyzer uses nGram here. Then you can build your search to also search against these fields. Example:

{
    "query": {
      "bool": {
        "should": [{
          "multi_match": {
            "fields": [
              "firstName.fullWord",
              ...
            "query": query,
            "fuzziness": "0"
          }
        }],
        "must": [{
          "multi_match": {
            "fields": [
              "firstName",...],
            "query": query,
            "fuzziness": "AUTO"
          }
        }]
      }
    }
  };
}