Lists the most commonly used tags with empty/missing tag wikis (wiki or excerpt).
Q&A about the site for music historians, critics, and fans
SELECT Count, ('site://tags/' + TagName + '|' + TagName) AS TagName, ExcerptPostId AS [Post Link], WikiPostId AS [Post Link] FROM Tags t LEFT JOIN Posts pe ON pe.Id = t.ExcerptPostId LEFT JOIN Posts pw ON pw.Id = t.WikiPostId WHERE ExcerptPostId like Upper('%##CommentText##%') OR WikiPostId like Upper('%##CommentText##%')