set @user = "King G.A";

use hewiki_p;

select page_title, rev_timestamp from page as c join revision

on page_id = rev_page

where page_title in

(select page_title from page as a join categorylinks

 on cl_from = a.page_id

 where cl_to = "ויקיפדיה:_ערכים_שמתקיים_לגביהם_דיון_חשיבות_אנציקלופדית")

and rev_actor in

(select actor_id from actor

 where actor_name = @user)

and page_namespace = 1

and rev_actor = 8263

order by rev_timestamp

​