SELECT /* SLOW_OK */ DISTINCT actor_name AS user, COUNT(image.img_name) as img_count 

    FROM actor, revision, image, page, categorylinks 

    WHERE page.page_id=categorylinks.cl_from

        AND actor.actor_id = revision.rev_actor

        AND image.img_name = page.page_title

        and revision.rev_page = page.page_id

        and revision.rev_parent_id = 0

        AND categorylinks.cl_to = "Prejury_selection_for_WikiDaheim_2023_in_Austria" 

    GROUP BY user 

    ORDER BY img_count DESC limit 300;