instruction: Find [A] ([B] or [C]). Search questions by tags intersection and union.
response: SELECT q.Id AS "post_link", q.Tags, q.LastActivityDate, q.Score, q.ViewCount, q.AnswerCount, q.OwnerUserId AS "user_link" FROM Posts AS q JOIN PostTags AS pt ON pt.PostId = q.Id JOIN PostTags AS pt2 ON pt2.PostId = q.Id JOIN Tags AS t ON t.Id = pt.TagId JOIN Tags AS t2 ON t2.Id = pt2.TagId JOIN TagSynonyms AS ts ON ts.TargetTagName = t.TagName JOIN TagSynonyms AS ts2 ON ts2.TargetTagName = t2.TagName WHERE q.PostTypeId = 1 AND q.ClosedDate IS NULL AND (t.TagName = @A OR ts.SourceTagName = @A) AND (t2.TagName IN (@B, @C) OR ts2.SourceTagName IN (@B, @C)) ORDER BY q.LastActivityDate DESC, q.Score DESC, q.ViewCount DESC