User:Jean-Frédéric/WmFr/2013/QI round2 Q2

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Queries
SET @t1 = 20131001000000, @t2 = 20140101000000;
SELECT /* SLOW_OK */ page_title, img_user_text AS uploader
    FROM page
        JOIN categorylinks AS cl1 ON page_id=cl1.cl_from
        JOIN categorylinks AS cl2 ON page_id=cl2.cl_from 
        JOIN image ON image.img_name = page.page_title
    WHERE cl1.cl_to="Media_supported_by_Wikimedia_France" 
        AND cl2.cl_to="Quality_images" 
        AND img_timestamp BETWEEN @t1 AND @t2
    ORDER BY img_timestamp ASC;