Search | partial_to copy_to

Question

I have copy_to working correctly for exact matches, but I cannot properly configure it with partial matches. Below are my mappings / settings and query with expected and actual results.

:

{
   "test": {
      "settings": {
         "index": {
            "analysis": {
               "filter": {
                  "ngram_filter": {
                     "type": "edge_ngram",
                     "min_gram": "1",
                     "max_gram": "15"
                  }
               },
               "analyzer": {
                  "ngram_analyzer": {
                     "filter": [
                        "lowercase",
                        "ngram_filter"
                     ],
                     "type": "custom",
                     "tokenizer": "standard"
                  }
               }
            },
            "number_of_shards": "1",
            "number_of_replicas": "1",
           }
      }
   }
}

display:

POST /test/_mapping/name
{
   "name": {
      "properties": {
         "vital": {
            "properties": {
               "first": {
                  "type": "string",
                  "copy_to": "full_name",
                   "term_vector": "yes",
                    "analyzer": "ngram_analyzer",
                    "search_analyzer": "standard"
               },
               "last": {
                  "type": "string",
                  "copy_to": "full_name",
                   "term_vector": "yes",
                    "analyzer": "ngram_analyzer",
                    "search_analyzer": "standard"
               },
               "full_name": {
                  "type": "string",
                   "term_vector": "yes",
                    "analyzer": "ngram_analyzer",
                    "search_analyzer": "standard"
               }
            }
         }
      }
   }
}

POST:

POST /test/name 
{
   "vital": {
      "first": "Tom",
      "last": "Doe"
   }
}

Now when I do a search ...

GET /test/name/_search
{
  "query": {
    "match": {
      "full_name": { 
        "query": "Tom Doe",
        "operator": "and"
      }
    }
  }
}

... I will return the result! Hurrraaaay, but if I do a search ....

GET /test/name/_search
{
  "query": {
    "match": {
      "full_name": { 
        "query": "Tom Do",
        "operator": "and"
      }
    }
  }
}

... I do not get the result :( I would like the partial match to work for full_name as well. As another, I could not successfully perform the partial match by name and surname. It's just a full_name that doesn't work. How can I do this?

Answer 1

, vital.full_name, full_name, full_name ( GET test, ):

POST /test/_mapping/name
{
   "name": {
      "properties": {
         "vital": {
            "properties": {
               "first": {
                  "type": "string",
                  "copy_to": "vital.full_name",      <--- fix this
                   "term_vector": "yes",
                    "analyzer": "ngram_analyzer",
                    "search_analyzer": "standard"
               },
               "last": {
                  "type": "string",
                  "copy_to": "vital.full_name",      <--- fix this
                   "term_vector": "yes",
                    "analyzer": "ngram_analyzer",
                    "search_analyzer": "standard"
               },
               "full_name": {
                  "type": "string",
                   "term_vector": "yes",
                    "analyzer": "ngram_analyzer",
                    "search_analyzer": "standard"
               }
            }
         }
      }
   }
}

:

POST /test/name/_search
{
  "query": {
    "match": {
      "vital.full_name": {          <-- fix this
        "query": "Tom Doe",
        "operator": "and"
      }
    }
  }
}

POST /test/name/_search
{
  "query": {
    "match": {
      "vital.full_name": {          <-- fix this
        "query": "Tom Do",
        "operator": "and"
      }
    }
  }
}

, .

Answer 2

"search_analyzer": "standard" , - , , . . https://www.elastic.co/guide/en/elasticsearch/guide/master/_index_time_search_as_you_type.html