Old articles that probably need talk pages (with left outer joins)

SQL

SELECT DISTINCT 
  CONCAT("[[", p.page_title, "]]") AS page_title,
  CONCAT("[[Talk:", p.page_title, "]]") AS talk_title,
   r.rev_timestamp AS time
FROM
  revision AS r,
  page AS p
  -- only incude pages without a talk page
  LEFT OUTER JOIN page AS p2 ON  p2.page_title = p.page_title AND p2.page_namespace = 1 AND p.page_namespace = 0
  -- only include pages without the 'disambiguation' page property
  left outer join page_props on pp_page = p.page_id and pp_propname = "disambiguation"
  -- exclude members of this category
  left outer join categorylinks as c1 on c1.cl_type = "page" and c1.cl_from = p.page_id and c1.cl_to = "All_set_index_articles"
  -- exclude members of this category
  left outer join categorylinks as c2 on c2.cl_type = "page" and c2.cl_from = p.page_id and c2.cl_to = "Redirects_to_Wiktionary"
where 
  c1.cl_from is null 
  AND c2.cl_from is null 
  AND pp_page is null
  AND p2.page_title IS NULL
  AND p.page_namespace = 0
  AND p.page_is_redirect = 0
  AND r.rev_id = p.page_latest
  -- restrict to old pages
  AND r.rev_timestamp < 20190000000000
  -- ORDER BY   r.rev_timestamp
  LIMIT
  200
SQL

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