Categories which are grand-children of themselves

Fork of Categories which are grand-children of themselves by Estopedist1

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

SQL

#USE stopthisrun;
USE etwiki_p;
SELECT now() AS timestamp
SELECT CONCAT('* [[:Category:', REPLACE(p1.page_title,'_',' '), ']]') AS cats
FROM categorylinks cl1
INNER JOIN page p1 ON p1.page_id = cl1.cl_from AND p1.page_namespace = 14 AND cl1.cl_type = 'subcat'
INNER JOIN categorylinks cl2 ON cl2.cl_to = p1.page_title
INNER JOIN page p2 ON p2.page_id = cl2.cl_from AND p2.page_namespace = 14 AND cl2.cl_type = 'subcat'
WHERE p2.page_title = cl1.cl_to
GROUP BY cats
LIMIT 5

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