SQL
x
SELECT p.page_title
FROM page AS p
JOIN page_props AS pp ON pp.pp_page = p.page_id AND pp.pp_propname = 'wikibase_item'
JOIN wb_items_per_site AS wbs ON wbs.wb_item_id = pp.pp_value
WHERE p.page_namespace = 0 -- Main namespace
AND p.page_is_redirect = 0 -- Exclude redirects
AND p.page_title NOT LIKE '%/%' -- Exclude subpages
GROUP BY p.page_title
HAVING COUNT(wbs.wb_site_id) = 1 -- Exactly one sitelink
ORDER BY p.page_title;
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