JQL Search Extensions for Jira & reports can help you to get all issues with sub tasks for epic
Following query will get all issues and sub tasks related to the epic id "test-24" , please see the attached image.
issue in allIssuesInEpic(test-24)
here is the documentation link for all queries.
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events