title: Filtering Parent-Child Rows Independently in AG-Grid
body: <p>I am currently going through the documentation regarding filtering:
  <a href="https://www.ag-grid.com/angular-data-grid/tree-data/" rel="nofollow noreferrer">https://www.ag-grid.com/angular-data-grid/tree-data/</a></p>
  <p>In the &quot;Example: Organisational Hierarchy&quot; demo section example code, I added:</p>
  <pre><code>filter: 'agTextColumnFilter'
  </code></pre>
  <p>to each column.</p>
  <p>However, when trying to filter for:
  Job Title rows with &quot;Exec&quot; AND Organistion Hierarchy rows with &quot;Erica&quot; the resulting data shown is empty.
  Is there a way to make the filtering independent such that Org Hierarchy rows with &quot;Erica&quot; are shown with any &quot;Job Title&quot; rows with &quot;Exec&quot; shown?</p>
  <p>My goal is that parent rows i.e. Organisation Hierarchy are not affected by the filtering of other columns.</p>
  <p>Demo Plnkr:
  <a href="https://plnkr.co/edit/vEAePeMCk2YsjrmQ?preview" rel="nofollow noreferrer">https://plnkr.co/edit/vEAePeMCk2YsjrmQ?preview</a></p>
  <p>Demo Video Example:
  <a href="https://www.youtube.com/watch?v=o-omH9SxTTQ" rel="nofollow noreferrer">https://www.youtube.com/watch?v=o-omH9SxTTQ</a></p>