بذرة من التصنيف

SQL

use arwiki_p;
select page_title, (select SUBSTRING_INDEX(cl_to, '_', 1) from categorylinks where cl_from = page_id limit 1)
from page
where page_namespace = 0
and page_is_redirect = 0
and page_id in (select cl_from from categorylinks where cl_from = page_id and cl_to = "مقالات_بحاجة_لشريط_بوابات")
and (select SUBSTRING_INDEX(cl_to, '_', 4) from categorylinks where cl_from = page_id limit 1) in (select page_title from
                                                                                                                 page 
                                                                                                                 where page_namespace = 100
                                                                                                                 and page_is_redirect = 0
                                                                                                                 );
SQL

Checking query status...
