Q&A about the site for researchers and developers who explore the principles of a system through analysis of its structure, function, and operation
SELECT q.Id as [Post Link], 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=##tag1:string?abstract-algebra##) OR (t.TagName=##tag2:string?geometry##) OR (t.TagName=##tag3:string?discrete-mathematics##) ORDER BY q.LastActivityDate 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