topic Re: How to use eval or other method in calculated fields to extract values into a new field? in Splunk Search https://community.splunk.com/t5/Splunk-Search/How-to-use-eval-or-other-method-in-calculated-fields-to-extract/m-p/198938#M57574 <P>Thanks for the reply Ayn. Can we use RegEx in Calculated fields?</P> Mon, 01 Sep 2014 11:28:57 GMT reach2tushar 2014-09-01T11:28:57Z How to use eval or other method in calculated fields to extract values into a new field? https://community.splunk.com/t5/Splunk-Search/How-to-use-eval-or-other-method-in-calculated-fields-to-extract/m-p/198936#M57572 <P>Hi,</P> <P>I am thinking of using the Calculated Fields option to extract one field.<BR /> I have following values in a field name "YOURFIELD"<BR /> Test_X<BR /> TestA_Y<BR /> TestBC_Z_all<BR /> I want to extract the characters before "_" in a new field "MYFIELD". The result will be:<BR /> Test<BR /> TestA<BR /> TestBC</P> <P>Can please help me to extract this result in calculated fields using an EVAL function or any other method?</P> Mon, 28 Sep 2020 17:27:09 GMT https://community.splunk.com/t5/Splunk-Search/How-to-use-eval-or-other-method-in-calculated-fields-to-extract/m-p/198936#M57572 reach2tushar 2020-09-28T17:27:09Z Re: How to use eval or other method in calculated fields to extract values into a new field? https://community.splunk.com/t5/Splunk-Search/How-to-use-eval-or-other-method-in-calculated-fields-to-extract/m-p/198937#M57573 <PRE><CODE>... | rex field=YOURFIELD "(?&lt;MYFIELD&gt;.+?)_" </CODE></PRE> Mon, 01 Sep 2014 11:20:49 GMT https://community.splunk.com/t5/Splunk-Search/How-to-use-eval-or-other-method-in-calculated-fields-to-extract/m-p/198937#M57573 Ayn 2014-09-01T11:20:49Z Re: How to use eval or other method in calculated fields to extract values into a new field? https://community.splunk.com/t5/Splunk-Search/How-to-use-eval-or-other-method-in-calculated-fields-to-extract/m-p/198938#M57574 <P>Thanks for the reply Ayn. Can we use RegEx in Calculated fields?</P> Mon, 01 Sep 2014 11:28:57 GMT https://community.splunk.com/t5/Splunk-Search/How-to-use-eval-or-other-method-in-calculated-fields-to-extract/m-p/198938#M57574 reach2tushar 2014-09-01T11:28:57Z Re: How to use eval or other method in calculated fields to extract values into a new field? https://community.splunk.com/t5/Splunk-Search/How-to-use-eval-or-other-method-in-calculated-fields-to-extract/m-p/198939#M57575 <P>Yes, you can.</P> Mon, 01 Sep 2014 11:47:20 GMT https://community.splunk.com/t5/Splunk-Search/How-to-use-eval-or-other-method-in-calculated-fields-to-extract/m-p/198939#M57575 Ayn 2014-09-01T11:47:20Z