Recursion on categorylinks

This query is marked as a draft This query has been published by EqJjgOa8rVvsRmZL.

SQL

with recursive catpage as (
  (select page.page_namespace, page.page_title from categorylinks, page
  where categorylinks.cl_to = 'Lists_of_events' and page.page_id = categorylinks.cl_from)
  union all
  (select page.page_namespace, page.page_title from catpage, categorylinks, page
  where catpage.page_namespace = 14 and categorylinks.cl_to = catpage.page_title and page.page_id = categorylinks.cl_from)
)

select count(distinct page_namespace, page_title) from catpage where page_namespace != 14;

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