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

SQL

​x
 
use hewiki_p;
select replace(page_title, "_", " ") as category from page as p1
where page_namespace = 14
and not exists
(select * from categorylinks as c1
 where cl_from = page_id
 and exists
 (select * from page as p3
  where cl_to = page_title
  and page_namespace = 14
  and not exists
  (select * from categorylinks as c3
   where page_id = cl_from
   and cl_to = "קטגוריות_מוסתרות")
​
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