# Is it possible to change the \_source Key name to uppercase?

**URL:** <https://discuss.elastic.co/t/is-it-possible-to-change-the--source-key-name-to-uppercase/92586>\
**Category:** Elasticsearch\
**Created:** [July 11, 2017, 7:01am UTC](https://discuss.elastic.co/t/is-it-possible-to-change-the--source-key-name-to-uppercase/92586 "2017-07-11T07:01:27Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![albeena](https://avatars.discourse-cdn.com/v4/letter/a/bbe5ce/32.png) [@albeena](https://discuss.elastic.co/u/albeena)\
**Post date:** [July 11, 2017, 7:01am UTC](https://discuss.elastic.co/t/is-it-possible-to-change-the--source-key-name-to-uppercase/92586/1 "2017-07-11T07:01:27Z")

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I have retrieved db values through elastcisearch and the column names are retrieved from the db that has underscore Syntax eg:user\_id ,i would like to change the column name as "User\_Id" .Is this possible without specifying query in logstash config file?

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**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [July 11, 2017, 7:15am UTC](https://discuss.elastic.co/t/is-it-possible-to-change-the--source-key-name-to-uppercase/92586/2 "2017-07-11T07:15:30Z")

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You need to reindex.

But I'm curious. Why do you want to do this? Json is meant to be consumed by computers not humans. So why do you care?

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [August 8, 2017, 7:15am UTC](https://discuss.elastic.co/t/is-it-possible-to-change-the--source-key-name-to-uppercase/92586/3 "2017-08-08T07:15:32Z")

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