nlwiki Contaminated categories

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

Categories contaminated with pages in namespaces that don't belong.

SQL

USE nlwiki_p;
SELECT 
	cl_to, 
    COUNT(DISTINCT page_namespace) AS `count`
FROM 
	categorylinks, 
    (SELECT page_id, page_namespace
     FROM page 
     WHERE 
     	page_namespace NOT IN (14, 100) AND 
     	(page_namespace!=4 OR page_title NOT REGEXP '^(Gewenste_artikelen|Educatieprogramma/ITV_Hogeschool_voor_Tolken_en_Vertalers)/')
    ) p1
WHERE 
	cl_to NOT REGEXP '^(Gebruiker|Portaal|Wikipedia):' AND
	cl_from=page_id    
GROUP BY cl_to
HAVING `count`>1

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