SQL
AخA
select page_title as "Category", rev_timestamp as "Creation date", actor_name as "Creator" from categorylinks join page on page_id=cl_from
join revision on rev_page=page_id and rev_parent_id=0
join actor_revision on actor_id=rev_actor
where cl_to="Wikipedians_by_ancestry"
order by rev_timestamp desc;
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