# Ngram search always returns same document **URL:** \ **Category:** Elasticsearch\ **Created:** [June 30, 2016, 3:24pm UTC](https://discuss.elastic.co/t/ngram-search-always-returns-same-document/54426 "2016-06-30T15:24:40Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![Mawalu](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mawalu/32/10653_2.png) [@Mawalu](https://discuss.elastic.co/u/Mawalu)\ **Post date:** [June 30, 2016, 3:24pm UTC](https://discuss.elastic.co/t/ngram-search-always-returns-same-document/54426/1 "2016-06-30T15:24:40Z")
I currently build a search for a contact list. The user should be allowed to search on any property and get results without typing full words / tokens. After I researched on the topic I found the ngram filter and tried to configure it as shown below: ``` $params = [ 'index' => SearchPerson::getIndex(), 'body' => [ 'settings' => [ "analysis" => [ "analyzer" => [ "ngram_analyzer" => [ "type" => "custom", "tokenizer" => "whitespace", "filter" => ["asciifolding", "lowercase", "ngram"] ], "whitespace_analyzer" => [ "type" => "custom", "tokenizer" => "whitespace", "filter" => [ "lowercase", "asciifolding" ] ] ], "filter" => [ "ngram" => [ "type" => "ngram", "min_gram" => 2, "max_gram" => 20, "token_chars" => [ "letter", "digit", "punctuation", "symbol" ] ] ] ] ], 'mapping' => [ 'person' => [ '_all' => [ 'index_analyzer' => 'ngram_analyzer', 'search_analyzer' => 'whitespace_analyzer' ], 'properties' => [ 'firstname' => [ 'index_analyzer' => 'ngram_analyzer', 'search_analyzer' => 'whitespace_analyzer' ] ] ] ] ] ]; ``` When I query the index using this query: ``` { "size": 10, "query": { "match": { "_all": { "query": "Terill", } } } } ``` i always get this document in return and not the one I intended: ``` { [...] "firstname": "Austen", "lastname": "Braun", [...] } ``` ([full document](http://pastebin.com/dyTsGyvR)) The one I intend to find is the following one: ``` { [...] "firstname": "Terrill", "lastname": "Parker", [...] } ``` ([full document](http://pastebin.com/egTBd7Cr)) ---
**Author:** ![spinscale](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/spinscale/32/25011_2.png) [@spinscale](https://discuss.elastic.co/u/spinscale)\ **Post date:** [July 4, 2016, 8:18am UTC](https://discuss.elastic.co/t/ngram-search-always-returns-same-document/54426/2 "2016-07-04T08:18:21Z")
Hey, the \_all field contains values from all of your fields. So if Austen Braun lives in the city of `Terill`, then this document will match, unless you specify to only query for the name fields. You need to provide the full document here to debug this further... --Alex ---
**Author:** ![Mawalu](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mawalu/32/10653_2.png) [@Mawalu](https://discuss.elastic.co/u/Mawalu)\ **Post date:** [July 4, 2016, 1:21pm UTC](https://discuss.elastic.co/t/ngram-search-always-returns-same-document/54426/3 "2016-07-04T13:21:39Z")
I know that this could be a problem and that the full documents would help. Since I hit the character limit with my post I uploaded the documents to pastebin and posted the link in my post. ---
**Author:** ![spinscale](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/spinscale/32/25011_2.png) [@spinscale](https://discuss.elastic.co/u/spinscale)\ **Post date:** [July 5, 2016, 6:51am UTC](https://discuss.elastic.co/t/ngram-search-always-returns-same-document/54426/4 "2016-07-05T06:51:48Z")
Hey, I just tried this locally and it seemed to work as expected. Can you please create and provide an exact curl recreation (no other programming languages, like your mapping above, see [https://www.elastic.co/help](https://www.elastic.co/help)) from mapping/index creation, to indexing documents up to searching and specify the elasticsearch version you are trying this out on. --Alex ---
**Author:** ![Mawalu](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mawalu/32/10653_2.png) [@Mawalu](https://discuss.elastic.co/u/Mawalu)\ **Post date:** [July 5, 2016, 5:13pm UTC](https://discuss.elastic.co/t/ngram-search-always-returns-same-document/54426/5 "2016-07-05T17:13:42Z")
Thanks for your response. I created a gist [here](https://gist.github.com/Mawalu/9dee10a97fcfdec133729737b27d034b) with every request and the curl commands I used. I first used the head plugin which strangely produced some different results. For example a query for the term `Aust` returned a result when I created everything using head but not when using curl. When I check the mapping ngram and everything is configured as always. Also I'm on Arch Linux and this is the output of --version: `Version: 2.3.3, Build: 218bdf1/2016-05-17T15:40:04Z, JVM: 1.8.0_92` Greetings Martin ---
**Author:** ![Phrobe](https://avatars.discourse-cdn.com/v4/letter/p/3ab097/32.png) [@Phrobe](https://discuss.elastic.co/u/Phrobe)\ **Post date:** [July 11, 2016, 5:05pm UTC](https://discuss.elastic.co/t/ngram-search-always-returns-same-document/54426/6 "2016-07-11T17:05:08Z")
@Mawalu Did you solve the problem already? I am trying to implement something similar. ---
**Author:** ![Ivan](https://avatars.discourse-cdn.com/v4/letter/i/df788c/32.png) [@Ivan](https://discuss.elastic.co/u/Ivan)\ **Post date:** [July 11, 2016, 6:52pm UTC](https://discuss.elastic.co/t/ngram-search-always-returns-same-document/54426/7 "2016-07-11T18:52:36Z")
I have not fully looked into your example, but one thing that sticks out is the use of "index\_analyzer", which I believe has been fully removed in 2.x: [https://www.elastic.co/guide/en/elasticsearch/reference/2.3/breaking\_20\_mapping\_changes.html#\_analyzer\_mappings](https://www.elastic.co/guide/en/elasticsearch/reference/2.3/breaking_20_mapping_changes.html#_analyzer_mappings) Try changing the field analyzer setting and see if it works. ---
**Author:** ![Mawalu](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mawalu/32/10653_2.png) [@Mawalu](https://discuss.elastic.co/u/Mawalu)\ **Post date:** [July 12, 2016, 1:33pm UTC](https://discuss.elastic.co/t/ngram-search-always-returns-same-document/54426/8 "2016-07-12T13:33:00Z")
Thanks for your answer. I changed my mappings but I still have the same results. I also updated [my gist](https://gist.github.com/Mawalu/9dee10a97fcfdec133729737b27d034b) to reflect the changes ---
**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, 10:36pm UTC](https://discuss.elastic.co/t/ngram-search-always-returns-same-document/54426/9 "2017-07-05T22:36:17Z")