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(DISTINCT 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 LIKE 'CC-%'
                    	AND categorylinks.cl_to NOT LIKE '%aircraft%'
            );

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SQL

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