instruction: Single-use tags with no wiki. Candidates for being deleted by the cleanup script, unless a wiki excerpt is written.
response: SELECT t.TagName, ExcerptPostId AS "post_link", pe.CreationDate FROM Tags AS t LEFT JOIN Posts AS pe ON pe.Id = t.ExcerptPostId LEFT JOIN Posts AS pw ON pw.Id = t.WikiPostId LEFT JOIN TagSynonyms AS ts ON ts.SourceTagName = t.TagName WHERE Count = 1 AND (WikiPostId IS NULL OR (LENGTH(pe.Body) < 1 AND LENGTH(pw.Body) < 1)) AND ts.SourceTagName IS NULL ORDER BY t.TagName