Query all tickets of a specific hierarchy tree

[Phil]

Is there a way to query for all of the tickets of a specific hierarchy?

Example:

I have a hierarchy like this:
- Level 1
   - Level 2
      - Level 3
         - Level 4
where Level 3 is a parent of Level 4, Level 2 is the parent of Level 3 etc.

I want to return ALL the tickets under Level 1 where Level 1 equals some value.  This will return all Level 2, Level 3 and Level 4 tickets.  Is this possible?

[Trudy Claspill]

Hello @Phil 

As per this document:

https://support.atlassian.com/jira-software-cloud/docs/search-for-advanced-roadmaps-custom-fields-in-jql/#Child-issues

...you should be able to use portfolioChildIssuesOf("issue key") to get all the children down through the layers for a specific issue.