Category talk pages with multiple WikiProjects without WikiProject banner shell

Fork of Talk pages with multiple WikiProjects without WikiProject banner shell by GoingBatty

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

Unfortunately, one WikiProject banner can generate multiple WikiProject categories

SQL

SELECT CONCAT("Category talk:", page_title)
FROM page
JOIN categorylinks cl
  ON cl.cl_from = page_id
  AND cl_to like "WikiProject%"
LEFT OUTER JOIN templatelinks tl
  ON tl.tl_from = page_id
  AND tl_namespace = 10
  AND tl_title = "WikiProject_banner_shell"
WHERE page_namespace = 15
AND tl_title is null
GROUP BY page_title
HAVING COUNT(cl.cl_to) = 3

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