How to join rows to compare values?

[KalebeRS]

Hello.

I have these two rows (PR_Tags and PR_ID). Need to return the PR_ID's that are matching the PR_Tags when I select in a Dropdown filter (Like if I select the line 1row 1, return the PR_ID's that matches this PR_Tag selected)

How can I do that?

index= host=  sourcetype=csv source=........\\resul_test.csv 
| table PR_Tags, PR_ID
| eval PR_Tags=split(PR_Tags,",")
| mvexpand PR_Tags
| dedup PR_Tags PR_ID

[rrovers · Accepted solution]

maybe this wil help?:

<form version="1.1">
  <label>tmp-pr-tags</label>
  <fieldset>
      <input type="dropdown" token="dropdown_tok" searchWhenChanged="true">
      <label>Selecteer een PR_Tag:</label>
      <choice value="*">PR_Tags...</choice>
      <search>
        <query>
          <![CDATA[
           index=main sourcetype=csv source=result_test.csv 
           | table PR_Tags, PR_ID
           | eval PR_Tags=split(PR_Tags,",")
           | mvexpand PR_Tags
           | dedup PR_Tags PR_ID
          ]]>
        </query>
        <earliest>0</earliest>
        <latest></latest>
      </search>
      <fieldForLabel>PR_Tags</fieldForLabel>
      <fieldForValue>PR_Tags</fieldForValue>
    </input>
  </fieldset>
  <row>
    <panel>
      <title>PR_Tags</title>
      <table>
        <search>
          <query>
           index=main sourcetype=csv source=result_test.csv 
           | where PR_Tags="$dropdown_tok$"
           | table PR_Tags, PR_ID
           | eval PR_Tags=split(PR_Tags,",")
           | mvexpand PR_Tags
           | dedup PR_Tags PR_ID
          </query>
        </search>
        <option name="count">50</option>
        <option name="drilldown">none</option>
        <option name="rowNumbers">true</option>
      </table>
    </panel>
  </row>
</form>