Pagine utente possibilmente categorizzate nelle categorie sbagliate

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

SQL

USE itwiki_p;

SELECT DISTINCT REPLACE(cl_to, '_', ' ') AS Categoria
FROM page
JOIN categorylinks ON page_id = cl_from
WHERE page_namespace = 2
  AND cl_to IN
  (
    SELECT cl_to
    FROM page
    JOIN categorylinks AS cl1 ON page_id = cl_from
    WHERE page_namespace = 0
    GROUP BY cl_to
    HAVING COUNT(cl_to) < (SELECT COUNT(cl_to)
                           FROM page
                           JOIN categorylinks AS cl2 ON page_id = cl_from AND cl1.cl_to = cl2.cl_to
                           WHERE page_namespace <> 0)
  )
ORDER BY cl_to

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