All-caps wanted Commons categories

This query is marked as a draft This query has been published by Omphalographer.

This query finds categories on Commons whose names are ALL CAPITAL LETTERS and which don't have category pages associated with them. These categories are frequently added by inexperienced users to out-of-scope images such as selfies and advertisements.

SQL

SELECT DISTINCT catname
FROM (
  SELECT cl_to AS catname FROM categorylinks
  WHERE LENGTH(cl_to) >= 3 
    AND cl_to RLIKE '^[A-Z]*$'
) sq
LEFT OUTER JOIN page ON (catname = page.page_title AND page.page_namespace = 14)
WHERE page.page_id IS NULL
LIMIT 100

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SQL

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