# Regex string from field value

**URL:** <https://discuss.elastic.co/t/regex-string-from-field-value/218298>\
**Category:** Elasticsearch\
**Created:** [February 7, 2020, 8:55am UTC](https://discuss.elastic.co/t/regex-string-from-field-value/218298 "2020-02-07T08:55:36Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![Mark\_Harwood](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mark_harwood/32/10538_2.png) [@Mark\_Harwood](https://discuss.elastic.co/u/Mark_Harwood)\
**Post date:** [February 7, 2020, 1:53pm UTC](https://discuss.elastic.co/t/regex-string-from-field-value/218298/5 "2020-02-07T13:53:54Z")

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[Duplicate post](https://discuss.elastic.co/t/regex-with-query-from-string/218312/2)

See my comments re performance

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_[View the full topic](https://discuss.elastic.co/t/regex-string-from-field-value/218298)._