# QueryString anlayzer use mapping
**URL:** https://discuss.elastic.co/t/querystring-anlayzer-use-mapping/12927
**Category:** Elasticsearch
**Created:** [July 25, 2013, 3:33am UTC](https://discuss.elastic.co/t/querystring-anlayzer-use-mapping/12927 "2013-07-25T03:33:05Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@ghonsor](https://discuss.elastic.co/u/ghonsor)
#### Post date: [July 25, 2013, 3:33am UTC](https://discuss.elastic.co/t/querystring-anlayzer-use-mapping/12927/1 "2013-07-25T03:33:05Z")
Hi all
I see in documentation: when no analyzer set in QueryBuilders.queryString,
it use default analyzer from mapping.( my analyzer is custom )
In my case, I think its wrong, So I want to find a way to ensure that, the
analyzer is loaded from mapping or not?
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 2:24am UTC](https://discuss.elastic.co/t/querystring-anlayzer-use-mapping/12927/2 "2017-07-06T02:24:39Z")