SQL
x
use enwiki_p;
SELECT
page_title,
cl_to
FROM page
JOIN
(SELECT
cl_to,
cl_from
FROM categorylinks
LEFT JOIN page
ON cl_to = page_title
AND page_namespace = 14
WHERE page_title IS NULL) AS cattmp
ON cattmp.cl_from = page_id
WHERE page_namespace = 14
;
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