Lugnuts underreferenced sports biographies

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

WITH RECURSIVE all_citation_templates (page_title, page_id, page_namespace) AS (
  (
    SELECT page_title, page_id, page_namespace
    FROM page
    WHERE page_title = "Citation_templates"
      AND page_namespace = 14
  )
  UNION
  (
    SELECT child.page_title, child.page_id, child.page_namespace
    FROM page AS child
    JOIN categorylinks as childLinks ON child.page_id = childLinks.cl_from
    JOIN all_citation_templates AS parent ON childLinks.cl_to = parent.page_title
    LEFT JOIN page_props ON childLinks.cl_from = pp_page AND pp_propname = "hiddencat"
    WHERE (child.page_namespace = 10 OR child.page_namespace = 14) AND parent.page_namespace = 14 AND pp_propname IS NULL
  )
),

articles AS (
  SELECT DISTINCT(Article.page_title), Article.page_id, rev_timestamp, rev_len as "InitialSize", Article.page_len as "CurrentSize"
FROM revision_userindex
JOIN page AS Article ON Article.page_id = rev_page AND Article.page_namespace = 0 
JOIN page AS Talk ON Article.page_title = Talk.page_title AND Talk.page_namespace = 1
JOIN categorylinks AS TalkCat ON TalkCat.cl_from = Talk.page_id
WHERE rev_parent_id = 0
	AND Article.page_is_redirect = 0
	AND rev_actor = 482
	AND TalkCat.cl_to = "WikiProject_Biography_articles"
	AND Article.page_len < 2500
),

#Excludes templates that are part of the group, but don't indicate the possible presence of a relevant source
all_citation_templates_titles AS (
  SELECT page_title
  FROM all_citation_templates
  WHERE page_namespace = 10
  AND page_title NOT IN ("Cite_web", "Cricinfo", "Reflist", "Subscription_required", "Webarchive", "One_source", "More_footnotes_needed", "More_citations_needed", "Link_note", "Family_name_explanation/core", "Commons_category-inline", "Commons_category", "Cite_sports-reference", "BLP_sources", "Cite_news")
),

contributions AS (
  SELECT articles.page_title, articles.page_id, articles.InitialSize, articles.CurrentSize, articles.rev_timestamp, childRev.rev_len as "ChildRevLen", parentRev.rev_len as "ParentRevLen", childRev.rev_actor
  FROM articles
  LEFT JOIN revision_userindex AS childRev ON page_id = childRev.rev_page
  LEFT JOIN revision AS parentRev ON childRev.rev_parent_id = parentRev.rev_id
  LEFT JOIN change_tag ON childRev.rev_id = ct_rev_id AND ct_tag_id IN (590, 1, 539, 582) #reverted or undo
  WHERE ct_tag_id IS NULL
),

contribution_count AS (
  SELECT page_title, page_id, InitialSize, CurrentSize, CAST(CurrentSize AS SIGNED) - CAST(InitialSize AS SIGNED) as Growth, rev_timestamp, SUM(CASE WHEN CAST(ChildRevLen as SIGNED) - CAST(ParentRevLen as SIGNED) > 200 THEN 1 ELSE 0 END) as ContributorCount
  FROM contributions
  WHERE rev_actor != 482
  GROUP BY page_id
),

reference AS (
  SELECT DISTINCT(page_id)
  FROM articles
  JOIN externallinks ON el_from = page_id
  WHERE el_to_domain_index NOT IN ("https://org.wikidata.www.") OR (
	el_to_domain_index IN ("https://com.espncricinfo.www.", "http://com.espncricinfo.www.", "https://com.google.books.", "http://com.google.books.", "https://com.google.news./newspaper", "http://com.google.news./newspapers")
	AND (LEFT(6, el_to_path) IN ("wisden", "story/", "books?", "newspa")
	OR el_to_path LIKE "%/content/story/%")
	)
),

citations AS (
  SELECT DISTINCT(page_id)
  FROM potential_pages
  JOIN templatelinks ON tl_from = page_id
  JOIN linktarget ON tl_target_id = lt_id
  WHERE lt_title IN (SELECT * FROM all_citation_templates_titles)
  OR lt_title IN ("ISBN", "Isbn") #ISBN template can be used seperately from a citation template
)

SELECT page_title, InitialSize, CurrentSize, (CAST(CurrentSize AS SIGNED) - CAST(InitialSize AS SIGNED)) as Growth, rev_timestamp
FROM contribution_count
WHERE NOT EXISTS (SELECT 1 FROM reference WHERE reference.page_id = contribution_count.page_id)
AND NOT EXISTS (SELECT 1 FROM citations WHERE citations.page_id = contribution_count.page_id)
AND ContributorCount = 0
ORDER BY page_title ASC
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