Test 3 - Quarry

SQL

-- Use ckbwiki_p
USE ckbwiki_p;

-- Fetch articles in the "زیندووان" category with date of death from Wikidata
SELECT
  pp.pp_value AS Qid,
  page.page_title AS title
FROM page
LEFT JOIN page_props AS pp ON page.page_id = pp.pp_page AND pp.pp_propname = 'wikibase_item'
WHERE page_namespace = 0
AND page_is_redirect = 0
AND page.page_id IN (SELECT cl_from FROM categorylinks WHERE cl_to = 'زیندووان')
AND pp.pp_value IS NOT NULL  -- Ensure there is a Wikidata QID
AND pp.pp_value IN (SELECT ips_item_id FROM wb_items_per_site WHERE ips_site_id = 'wikidatawiki' AND ips_site_page = page.page_title)
AND pp.pp_value IN (SELECT DISTINCT wd_item_id FROM wbstatements WHERE wd_property = 'P570');
SQL

Checking query status...
