nlwiki_p Pages without category

Fork of nlwiki Articles without content category by Bdijkstra

This query is marked as a draft This query has been published by Estopedist1.

1. hc = a list of maintenance categories, meaning the titles of category pages with the __HIDDENCAT__ or __EXPECTUNUSEDCATEGORY__ property
    note: could filter out empty categories using the `category` table
2. nhcl = take `categorylinks`, filter out hc and collapse to a single row per page
3. final result = get the titles of article pages not present in nhcl

SQL

use commonswiki_p;

SELECT page_title
FROM page
WHERE 
	page_namespace=6 AND page_is_redirect=0 AND
	NOT EXISTS (SELECT * FROM (
		# niet-beheer categorylinks
		SELECT cl_from, cl_to FROM categorylinks WHERE NOT EXISTS (SELECT * FROM (
			# beheercategorieën
			SELECT DISTINCT page_title
			FROM page, page_props
			WHERE page_namespace=14 AND page_id=pp_page AND (pp_propname='hiddencat' OR pp_propname='expectunusedcategory')
		) AS hc WHERE cl_to=hc.page_title)
		GROUP BY cl_from
		ORDER BY cl_from
	) AS nhcl WHERE nhcl.cl_from=page_id)
    LIMIT 3;

SQL

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