on edit: once you have a query you like save it as a personal filter and it will show up somewhere in the UI, because Jira sucks who knows where (changes all the time), but you can of course also make personalized dashboards and place the filters you have made on to that dashboard with a widget that runs the filter.
on second edit: evidently I earned someone's downvote by not being adequately anti-jira despite having put in that Jira sucks, but really the comment to which I'm replying ends with:
" I'd also like to add that as a developer, once I finish my ticket I assign it to a QA. Then I can never get back to the ticket. I'd like a really easy way to see all of the tickets I've ever completed. But completed tickets aren't assigned to me, they're assigned to QA. "
on edit: once you have a query you like save it as a personal filter and it will show up somewhere in the UI, because Jira sucks who knows where (changes all the time), but you can of course also make personalized dashboards and place the filters you have made on to that dashboard with a widget that runs the filter.
on second edit: evidently I earned someone's downvote by not being adequately anti-jira despite having put in that Jira sucks, but really the comment to which I'm replying ends with:
" I'd also like to add that as a developer, once I finish my ticket I assign it to a QA. Then I can never get back to the ticket. I'd like a really easy way to see all of the tickets I've ever completed. But completed tickets aren't assigned to me, they're assigned to QA. "
which, using JQL, is real easy.