Untitled query #72733

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

SQL

select 
  p.page_title,p.page_namespace, count(p2.page_title)
from page as p
left join page as p2 on p2.page_title like concat(p.page_title,'_%')
group by p.page_title
having
p.page_namespace = 0 
and  (LENGTH(p.page_title) - LENGTH(replace(p.page_title, '_', ''))) = 1

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