قيمة خاصية محددة في مقالات تصنيف محدد

SQL

use arwiki_p;
select CONCAT('[[',p.page_title,']]'),
pp_value
FROM page as p, page_props as pp, wikidatawiki_p.page as wdp
WHERE pp_page = p.page_id 
AND p.page_namespace = 0
AND pp_propname = 'wikibase_item' 
AND wdp.page_title = pp_value
AND wdp.page_namespace = 0
and p.page_is_redirect = 0 

and exists (select * from wikidatawiki_p.pagelinks wdpl2
                where wdpl2.pl_from = wdp.page_id AND wdpl2.pl_namespace =120
                AND wdpl2.pl_title = "P31"
               )
and p.page_id in (select cl_from from categorylinks  where cl_to ='لاعبو_كرة_قدم_سعوديون') 
GROUP BY p.page_title
LIMIT 20;

SQL

Checking query status...