I have a team that is looking for a filter that will return specific sub-tasks of a parent task that have been completed. The problem that I have run into is that the assignee of the sub-task needs to match the parent task. Also, I need this to display a list of all of the assignees, not just a specific one. There are over 400 individual assignees, and the manager wants to see the results as a list. Here is what I have so far and it gets me about 80%.
project = oei AND issueFunction in subtasksOf("project = oei and status = open") AND "OE Component" in (cascadeOption(Education, "Lean Leader"), cascadeOption(Education, "Lean Introduction (2 days)"), cascadeOption(Education, "Innovation Awareness (2 days)"), cascadeOption(Exposure))