Users in Images from Wiki Science Competition 2017 in Chile

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SQL

use commonswiki_p;
select user_name, user_registration,
                (case when user_registration between :ini and :fin then 1 else 0 end) newbie,
                count(1) uploads
                from categorylinks
                join page pg on page_id = cl_from
                join image img on img_name = page_title
                join `user` us on img_user = user_id
              where cl_to = 'Images from Wiki Science Competition 2017 in Chile'
                and cl_type = 'file'
                group by 1, 2, 3
                order by 4 desc

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