How can I easily measure escalation of issues?

Question

I am trying to figure out how many of my JIRA issues are resolved without escalation.

I assume I can use the assignment value to determine

1. whether the person I assigned the issue was able to resolve without escalation

2. how many touches it requires to resolve issues (of different types)

Jobin Kuruvilla [Adaptavist] · Answer

I don't know about a generic JQL to do this. You can find out issues where assignee was changed from a given user to another given user like this:

assignee changed from "xyz" to "abc"

Ed Schriger · Answer

For the issue type I am most concerned about, it is done during creation.

And the reporter is generally responsible for resolution of that issue.

Jobin Kuruvilla [Adaptavist] · Answer

I see! So you want to find issues where assignee is not changed? Is the assignment done during creation or you use the assign operation to assign the issue to someone initially?