# What is the difference between \_source and fields? When to use \_source vs fields in queries?

**URL:** <https://discuss.elastic.co/t/what-is-the-difference-between--source-and-fields-when-to-use--source-vs-fields-in-queries/78647>\
**Category:** Elasticsearch\
**Created:** [March 15, 2017, 6:16am UTC](https://discuss.elastic.co/t/what-is-the-difference-between--source-and-fields-when-to-use--source-vs-fields-in-queries/78647 "2017-03-15T06:16:12Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [March 16, 2017, 7:55am UTC](https://discuss.elastic.co/t/what-is-the-difference-between--source-and-fields-when-to-use--source-vs-fields-in-queries/78647/2 "2017-03-16T07:55:50Z")

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Is this related to [Format Output of ElasticSearch](https://discuss.elastic.co/t/format-output-of-elasticsearch/78650)?

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_[View the full topic](https://discuss.elastic.co/t/what-is-the-difference-between--source-and-fields-when-to-use--source-vs-fields-in-queries/78647)._