pages cathgorized under a mother and daughter categories

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

SQL

USE fawiki_p;
SELECT page_title, frst.cl_to#, scnd.cl_to
FROM page JOIN categorylinks AS frst ON frst.cl_from = page_id JOIN categorylinks AS scnd ON scnd.cl_from = page_id

WHERE page_namespace = 0
AND page_is_redirect = 0
#AND pp_propname <> 'hiddencat'
#AND pl_namespace = 14
AND scnd.cl_to IN (
  SELECT pl_title 
    FROM pagelinks JOIN page ON pl_from = page_id
    WHERE page_title = frst.cl_to
    AND pl_from_namespace = 14
    AND pl_namespace = 14
  )
  

#AND page_title = 'گاهنامه'

LIMIT 10;

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