Orphaned archive pages

This query is marked as a draft This query has been published by Aidan9382.

create a list of talk pages that are redirects with non-redirect archive subpages, mainly to find pages that have been moved improperly without their subpages
For simplicity sakes, the archive subpages must follow the ' /Archive %(counter)d ' format to be picked up

SQL

select CONCAT("Talk:",SUBSTR(page_title,1,LENGTH(page_title)-10)) as basepage_title
from page
where page_namespace = 1
and page_is_redirect = 0
and page_random < 0.02 -- Prevent taking 50 years for testing
and SUBSTR(page_title,LENGTH(page_title)-9,10) = "/Archive_1"
and exists (
  select 1
  from page as basepage
  where basepage.page_namespace = 1
  and basepage.page_is_redirect = 1
  and basepage.page_title = SUBSTR(page.page_title,1,LENGTH(page.page_title)-10)
);

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