use hewiki_p;

select * from page as p1 join categorylinks

on page_id = cl_from

where cl_to = "תבניות_עם_ניהול_פרמטרים"

and ((not page_namespace = 10) or

     (page_namespace = 10

      and not exists

      (select * from page

       where page_namespace = 14

       and page_title = concat("שגיאות_פרמטריות_בתבנית_", p1.page_title))));

use hewiki_p;

select * from page as p1 join categorylinks

on page_id = cl_from

where cl_to = "שגיאות_פרמטריות_לפי_תבנית"

and (not exists

      (select * from page

       where page_namespace = 10

       and p1.page_title = concat("שגיאות_פרמטריות_בתבנית_", page_title)

       and exists

       (select * from categorylinks

        where cl_from = page_id

        and cl_to = "שגיאות_פרמטריות_לפי_תבנית"

      )))

​