Test 3 - Quarry

SQL

SELECT
  pl_title AS Category
FROM categorylinks
WHERE cl_to NOT IN (
  SELECT cl_to
  FROM categorylinks
  WHERE cl_from IN (SELECT page_id FROM page WHERE page_namespace = 0 AND page_title = 'Wikipedia:en')
)
AND cl_to IN (
  SELECT cl_to
  FROM categorylinks
  WHERE cl_from IN (SELECT page_id FROM page WHERE page_namespace = 0 AND page_title = 'Wikipedia:en')
)
AND cl_from IN (
  SELECT page_id
  FROM page
  WHERE page_namespace = 14
  AND page_title NOT IN (SELECT page_title FROM page WHERE page_namespace = 14 AND page_title LIKE 'Wikipedia:%' AND page_id IN (SELECT cl_from FROM categorylinks))
)
LIMIT 100;
SQL

Checking query status...
