Elasticsearch: Find substring match

Question

I want to perform both exact word match and partial word/substring match. For example if I search for \"men\'s shaver\" then I should be able to find \"men\'s shaver\" in th

Answer 1

To search for partial field matches and exact matches, it will work better if you define the fields as "not analyzed" or as keywords (rather than text), then use a wildcard query.

See also this.

To use a wildcard query, append * on both ends of the string you are searching for:

POST /my_index/my_type/_search
{
"query": {
    "wildcard": {
       "name": {
          "value": "*en's*"
       }
    }
}
}

To use with case insensitivity, use a custom analyzer with a lowercase filter and keyword tokenizer.

Custom Analyzer:

"custom_analyzer": {
            "tokenizer": "keyword",
            "filter": ["lowercase"]
        }

Make the search string lowercase

If you get search string as AsD: change it to *asd*

Answer 2

By searching with any string or substring Use:

query: {
    or: [{
      match_phrase_prefix: {
            name: str
     }
    }, {
        match_phrase_prefix: {
            surname: str
        }
    }]
}

Happy coding with Elastic Search....