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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.

Q&A for experienced flyers, pilots, and builders of drones and model aircraft

-- MaxBodyLength: Body shorter than "Set to 0 or -1 to disable"
DECLARE @max_body_len int = ##MaxBodyLength:int?0##;
-- MaxExcerptLength: or excerpt shorter than "Set to 0 or -1 to disable"
DECLARE @max_excerpt_len int = ##MaxExcerptLength:int?1##;
-- MinBodyLength: or body longer than "Set to -1 to disable"
DECLARE @min_body_len int = ##MinBodyLength:int?12000##;
-- MinExcerptLength: or excerpt longer than "Set to -1 to disable"
DECLARE @min_excerpt_len int = ##MinExcerptLength:int?-1##;

SELECT t.Count,
       t.TagName,
       coalesce(len(pe.Body),0) as [Excerpt length],
       coalesce(len(pw.Body),0) as [Wiki length],
       pe.CreationDate,
       tssrc.TargetTagName as [Synonym target],
       tssrc.ApprovalDate
INTO   #TagList
FROM   Tags t
       LEFT JOIN Posts pe on pe.Id = t.ExcerptPostId
       LEFT JOIN Posts pw on pw.Id = t.WikiPostId
       LEFT JOIN TagSynonyms tssrc on tssrc.SourceTagName = t.TagName
       LEFT JOIN Tags tgt on tssrc.TargetTagName = tgt.TagName
WHERE  -- match everything if all parameters are disabled
       ((@max_body_len <= 0 and @max_excerpt_len <= 0
        and @min_body_len = -1 and @min_excerpt_len = -1)
       or coalesce(len(pe.Body),0) < @max_excerpt_len -- short excerpt
       or coalesce(len(pw.Body),0) < @max_body_len    -- short wiki
       or len(pe.Body) > nullif(@min_excerpt_len,-1)  -- long excerpt
       or len(pw.Body) > nullif(@min_body_len,-1))    -- long wiki
       and (tssrc.SourceTagName is null   -- exclude tags that are synonyms
            or tssrc.ApprovalDate is null -- unless it was never approved
            or tgt.TagName is null)       -- or the synonym target is gone

SELECT *
FROM #TagList
ORDER BY Count desc,
    [Excerpt length] asc,
    [Wiki length] asc,
    TagName

SELECT row_number() over (order by Count) as Rank,
    count(Count) as [Number of tags with this many questions]
FROM #TagList
GROUP BY Count

view current version

edited apr 22 16 amaranth

created feb 1 13 e