nlwiki Categories that should perhaps be disambiguated

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

SQL

SELECT c1.cat_title AS c1, c1.cat_pages AS c1p, page_title AS c1main, GROUP_CONCAT(c2.cat_title SEPARATOR ' | ') AS c2
FROM category c2, category c1
	LEFT JOIN categorylinks ON (c1.cat_title=cl_to AND cl_sortkey_prefix=' ')
    LEFT JOIN page ON (cl_from=page_id AND page_namespace=0 AND page_is_redirect=0)
WHERE c1.cat_title NOT REGEXP '_\\(' AND c2.cat_title REGEXP '_\\(' AND c1.cat_title=REGEXP_REPLACE(c2.cat_title,'_\\(.*$','')
GROUP BY c1.cat_title

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