use hewiki_p;

select page_namespace, page_title, tl_title from templatelinks join page as p1

on tl_namespace = 10

and tl_title like "דגל/%"

and p1.page_id = tl_from

and not exists

(select * from page as p2

 where tl_title = p2.page_title

 and p2.page_namespace = 10)

​