Number of unique uploaders of CC files on Commons

This query is marked as a draft This query has been published by Guillaume (WMF).

See https://meta.wikimedia.org/wiki/State_of_the_Commons/2015

SQL

use commonswiki_p;
SELECT count(*), img_user
    FROM image, page
    WHERE page.page_namespace = 6
        AND page.page_title = image.img_name
        AND page_id IN (
            SELECT DISTINCT cl_from FROM categorylinks
          			WHERE categorylinks.cl_to = 'Files_by_Guillaume_Paumier'
            )
    GROUP BY img_user;

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