# Using two analyzers stemmer and synonym at a same time

**URL:** <https://discuss.elastic.co/t/using-two-analyzers-stemmer-and-synonym-at-a-same-time/31982>\
**Category:** Elasticsearch\
**Created:** [October 12, 2015, 6:48am UTC](https://discuss.elastic.co/t/using-two-analyzers-stemmer-and-synonym-at-a-same-time/31982 "2015-10-12T06:48:12Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![adish\_katkar](https://avatars.discourse-cdn.com/v4/letter/a/f04885/32.png) [@adish\_katkar](https://discuss.elastic.co/u/adish_katkar)\
**Post date:** [October 12, 2015, 6:48am UTC](https://discuss.elastic.co/t/using-two-analyzers-stemmer-and-synonym-at-a-same-time/31982/1 "2015-10-12T06:48:12Z")

</div>

I have created an index with analyzers **stemmer** and **synonym**.  
I have added a mapping for a field which contains these **two analyzers**.

```
{
  "settings": {
    "index": {
      "analysis": {
        "analyzer": {
          "my_stemmer": {
            "tokenizer": "standard",
            "filter": [
              "standard",
              "lowercase",
              "custom_english_stemmer"
            ]
          },
          "myr_synonym": {
            "tokenizer": "whitespace",
            "filter": [
              "synonym"
            ]
          }
        },
        "filter": {
          "custom_english_stemmer": {
            "type": "stemmer",
            "name": "english"
          },
          "synonym": {
            "type": "synonym",
            "format": "wordnet",
            "synonyms_path": "wn_s.pl"
          }
        }
      }
    }
  },
  "mappings": {
    "_default_": {
      "properties": {
        "name": {
          "type": "string",
          "fields": {
            "synonym":{
              "type": "string",
              "analyzer": "my_synonym"
            },
            "my_stemmer":{
              "type": "string",
              "analyzer": "my_stemmer"
            }
          }
        }
      }
    }
  }
}

```

> I am using multi\_match query:  
> E.g. result contains belt in name.

Suppose I queried as :

```
{
      "query": {
          "multi_match": {
              "query": "knock",
              "fields": [
                  "name.synonym^2",
                  "name.my_stemmer^2"
                 ]
          }
      }
  }

```

it will fetch results of **belt** as **knock is synonym for belt**.  
But if I use " **knocks**" results are empty. Can I apply both **stemmer** as well as **synonym** on single field at a time?

---

<div class="post-metadata">

**Author:** ![davidbkemp](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/davidbkemp/32/594_2.png) [@davidbkemp](https://discuss.elastic.co/u/davidbkemp)\
**Post date:** [October 13, 2015, 10:07am UTC](https://discuss.elastic.co/t/using-two-analyzers-stemmer-and-synonym-at-a-same-time/31982/2 "2015-10-13T10:07:28Z")

</div>

I think you may have a number of options.

For your particular scenario, you could search on the synonym field but force the query to use the stemmer:

```
{
  "query": {
    "match": {
      "name.synonym": {
        "query": "knocks",
        "analyzer": "my_stemmer"
      }
    }
  }
}

```

Alternatively, you could define and use an analyser that applies the synonym filter after the stemmer:

```
  "settings": {
    "index": {
      "analysis": {
        "analyzer": {
          "analyzer_combo": {
            "tokenizer": "standard",
            "filter": [
              "standard",
              "lowercase",
              "custom_english_stemmer",
              "synonym"
            ]
          },
....

```

And be aware that you can declare in your mapping for a field a different query analyzer to the index analyzer used for the field. For example, you could declare a third multi field whose index analyzer is the "analyzer\_combo" I defined above, but that the query analyzer is to be "my\_stemmer"

```
    "name": {
      "type": "string",
      "fields": {
        "another_field": {
          "type": "string",
          "index_analyzer": "analyzer_combo",
          "query_analyzer": "my_stemmer"
        }
      }

```

Hope this helps.

---

<div class="post-metadata">

**Author:** ![adish\_katkar](https://avatars.discourse-cdn.com/v4/letter/a/f04885/32.png) [@adish\_katkar](https://discuss.elastic.co/u/adish_katkar)\
**Post date:** [October 19, 2015, 7:09am UTC](https://discuss.elastic.co/t/using-two-analyzers-stemmer-and-synonym-at-a-same-time/31982/3 "2015-10-19T07:09:29Z")

</div>

Hi,  
Thanks for your valuable input. That really worked fine for me 😃  
This worked for the simple query:

```
 {
  "query": {
    "match": {
      "name.synonym": {
        "query": "knocks",
        "analyzer": "my_stemmer"
      }
    }
  }
}

```

but now what if The query is more complex and use of filtering in it? I tried different ways but unable to add  
analyzer with it.

```
{
 "min_score": 0.5,
 "query": {
   "filtered": {
     "filter": {
       "and": {
         "filters": [
           {
             "terms": {
               "tags.combo": [
                 "belt"
               ]
             }
           }
         ]
       }
     },
     "query": {
       "match_all": {         
       }
     }
   }
 }
}

```

where combo is the mapped field to tags:

```
"tags": {
           "type": "string",
           "fields": {
                         "combo": {
                         "index_analyzer": "analyzer_combo",
                         "type": "string"
                      }
           }
}

```

Is it possible to specifically add analyzer in the query?  
Thanks in advance

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 5, 2017, 11:44pm UTC](https://discuss.elastic.co/t/using-two-analyzers-stemmer-and-synonym-at-a-same-time/31982/4 "2017-07-05T23:44:07Z")

</div>