Orphan subpages of portals

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

Looks for first-level subpages of portals which were left without incoming links or transclusions, probably after being superseded by newer templates.

SQL

USE enwiki_p;
SELECT page_title, COUNT(tl_from)
FROM page
JOIN templatelinks
ON tl_title = page_title
AND tl_from_namespace = 100
WHERE SUBSTRING_INDEX(page_title, "/", 1) IN (
  SELECT page_title
  FROM page
  JOIN templatelinks
  ON tl_from = page_id
  AND page_namespace = 100
  AND tl_title LIKE "Transclude_%_excerpt"
  AND LOCATE("/", page_title) = 0 )
  ;

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