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Looks for first-level subpages of portals which were left without incoming links or transclusions, probably after being superseded by newer templates.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
LEFT JOIN templatelinks
ON page_title = tl_title
AND tl_namespace = 100
AND tl_from_namespace = 100
WHERE LOCATE("/", page_title) > 0;
/* 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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