Categories who are under hidden categories only (zhwiki_p)

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

SQL

WITH hc AS (
	SELECT p.page_title, pp.pp_propname
	FROM page_props pp 
	LEFT JOIN page p ON (p.page_id = pp.pp_page)
	WHERE pp.pp_propname = 'hiddencat'
)
SELECT p.page_title, COUNT(*) AS cat_count, SUM(CASE WHEN hc.pp_propname IS NULL THEN 0 ELSE 1 END) AS hidden_cat_count
FROM page p 
LEFT JOIN categorylinks cl ON p.page_id = cl.cl_from
LEFT JOIN hc ON cl.cl_to = hc.page_title
WHERE p.page_namespace = 14 AND p.page_id = 186871
HAVING cat_count = hidden_cat_count

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