# not\_analyzed String search **URL:** \ **Category:** Elasticsearch\ **Created:** [January 21, 2015, 6:34pm UTC](https://discuss.elastic.co/t/not-analyzed-string-search/21758 "2015-01-21T18:34:24Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Messias](https://avatars.discourse-cdn.com/v4/letter/m/9de053/32.png) [@Messias](https://discuss.elastic.co/u/Messias)\ **Post date:** [January 21, 2015, 6:34pm UTC](https://discuss.elastic.co/t/not-analyzed-string-search/21758/1 "2015-01-21T18:34:24Z")
Hi, I have the following issue when I search on a not\_analyzed String. Mapping: filename: { type: "string", index: "not\_analyzed" } field: "filename" value: "Stream\_Flash\_Video\_129518.log" query\_string: filename:_lash_ -- get results query\_string: filename:_Flash_ -- get no results query\_string: filename:_flash_ -- get no results query\_string: filename:_129518_ -- get results Why does filename:_Flash_ get no results? I dont understand the the logic that ES use. If I have a string with this value. And i use a regex ._Flush._ (what is sthe same as _Flush_) then it will match. How is it possible to search this value with a query\_string? On an analyzed filed it works. Best regards Messias -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/f434f7da-2328-43bc-b113-06be660fd489%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/f434f7da-2328-43bc-b113-06be660fd489%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![johtani](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/johtani/32/44956_2.png) [@johtani](https://discuss.elastic.co/u/johtani)\ **Post date:** [January 22, 2015, 3:07am UTC](https://discuss.elastic.co/t/not-analyzed-string-search/21758/2 "2015-01-22T03:07:57Z")
Hi Messias, You should set “lowercase\_expanded\_terms” param to false. Default it true. See : [Elasticsearch Platform — Find real-time answers at scale | Elastic](http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/query-dsl-query-string-query.html#query-dsl-query-string-query) “query\_string” query is changed automatically query-terms to lower-case in some cases. i.e. wildcard, prefix, fuzzy… * * * Jun Ohtani [johtani@gmail.com](mailto:johtani@gmail.com) blog : [http://blog.johtani.info](http://blog.johtani.info) twitter : [http://twitter.com/johtani](http://twitter.com/johtani) > 2015/01/22 3:34、Messias [schubert.torsten82@gmail.com](mailto:schubert.torsten82@gmail.com) のメール： > > Hi, > > I have the following issue when I search on a not\_analyzed String. > > Mapping: > filename: { > type: "string", > index: "not\_analyzed" > } > > field: "filename" > value: "Stream\_Flash\_Video\_129518.log" > > query\_string: filename:_lash_ -- get results > query\_string: filename:_Flash_ -- get no results > query\_string: filename:_flash_ -- get no results > query\_string: filename:_129518_ -- get results > > Why does filename:_Flash_ get no results? > I dont understand the the logic that ES use. If I have a string with this value. > And i use a regex ._Flush._ (what is sthe same as _Flush_) then it will match. > > How is it possible to search this value with a query\_string? > > On an analyzed filed it works. > Best regards > Messias > > -- > You received this message because you are subscribed to the Google Groups "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/f434f7da-2328-43bc-b113-06be660fd489%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/f434f7da-2328-43bc-b113-06be660fd489%40googlegroups.com). > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/B70A9D24-2180-4F18-B6C5-2F8653B4BB68%40gmail.com](https://groups.google.com/d/msgid/elasticsearch/B70A9D24-2180-4F18-B6C5-2F8653B4BB68%40gmail.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 12:37am UTC](https://discuss.elastic.co/t/not-analyzed-string-search/21758/3 "2017-07-06T00:37:22Z")