Q&A for those using, extending or developing Emacs
SELECT q.Id as [Post Link], q.Title, q.Tags, q.CreationDate, q.LastActivityDate FROM Posts q INNER JOIN PostTags pt ON q.Id=pt.PostId INNER JOIN Tags t ON t.id = pt.TagId WHERE t.TagName=##tagname:string?geometry## AND (lower(q.Body) LIKE '%##text?volume##%') ORDER BY q.CreationDate DESC ---simply using "q.Tags LIKE '%<##Tagname##>%'" leads to some false positives ---for example, searching for geometry gives also the questions tagged geometry-of-numbers