Most common tags with short, long, or missing excerpt or wiki

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Lists the most commonly used tags with empty/missing/short tag wikis (wiki or excerpt). Can also identify tag wikis that are over a specified length. Enter -1 for all parameters to match all tags. Tags that have been synonymized are excluded.

History of Science and Math

Q&A for people interested in the history and origins of science and mathematics

-- MaxBodyLength: Max body length "Set to -1 to disable"
DECLARE @max_body_length INT = ##MaxBodyLength:INT?50##;
-- MaxExcerptLength: Max excerpt length "Set to -1 to disable"
DECLARE @max_excerpt_length INT = ##MaxExcerptLength:INT?50##;

SELECT Count,
       t.TagName,
       LEN(pe.Body)  AS [Excerpt length],
       LEN(pw.Body)  AS [Wiki length],
       ExcerptPostId 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 IS NULL                            -- no excerpt post
       OR LEN(pe.Body) < nullif(@max_excerpt_length,-1) -- excerpt very short
       OR WikiPostId IS NULL                            -- no wiki
       OR LEN(pw.Body) < nullif(@max_body_length,-1)    -- wiki very short
ORDER  BY Count DESC, len(pw.Body) desc, len(pe.body) desc, t.TagName

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