TEST 6 - Quarry

SQL

USE plwiki_p;
SELECT el_to, pl.page_title, pp_value
FROM (SELECT * FROM externallinks WHERE el_to LIKE "%iat.uni-leipzig.de%" AND el_to LIKE "%spid=%") AS el
JOIN (SELECT * FROM page WHERE page_namespace = 0 AND page_title NOT LIKE "Seznam%") AS pl ON pl.page_id = el_from
JOIN (SELECT * FROM page_props WHERE pp_propname = "wikibase_item") AS props ON pp_page = pl.page_id
JOIN (SELECT * FROM wikidatawiki_p.page WHERE page_namespace = 0) AS wd ON wd.page_title = pp_value
WHERE wd.page_id IN (
  SELECT pl_from FROM wikidatawiki_p.pagelinks WHERE pl_namespace = 0 AND pl_title = "Q811534" AND pl_from_namespace = wd.page_namespace
) AND wd.page_id NOT IN (
  SELECT pl_from FROM wikidatawiki_p.pagelinks WHERE pl_namespace = 120 AND pl_title = "P2727" AND pl_from_namespace = wd.page_namespace
)
ORDER BY pp_value;
SQL

Checking query status...
