Selflinks in disambiguation pages

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

SQL

select * from page p1
where p1.namespace = 0 and p1.page_id in (
  select cl_from from categorylinks
  where cl_to in ("All_disambiguation_pages", "All_set_index_articles") and cl_type = 'page'
)
and exists (
  select 1 from pagelinks join page p2 on p2.page_title = pl_title and p2.namespace = pl_namespace
  join redirect on rd_from = p2.page_id and rd_title = p1.page_title and rd_namespace = 0
  where pl_from = p1.page_id and pl_from_namespace = 0
)
limit 1

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