SQL
x
USE elwiki_p;
SELECT article.page_title, article.page_id
FROM page
INNER JOIN page article
ON page.page_title=article.page_title
INNER JOIN categorylinks ON cl_from = page.page_id
AND categorylinks.cl_to = "Λήμματα_τάξης_Α"
WHERE page.page_namespace = 0
AND article.page_namespace = 0
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