Q&A for students, teachers, and linguists wanting to discuss the finer points of the Italian language
SELECT a.OwnerUserId, b.AcceptedAnswerId FROM Posts a INNER JOIN Posts b ON a.AcceptedAnswerId = b.OwnerUserId WHERE a.AcceptedAnswerId IS NOT NULL AND b.AcceptedAnswerId IS NOT NULL AND a.AcceptedAnswerId <> a.OwnerUserId AND b.AcceptedAnswerId <> b.OwnerUserId;