external links in WP (test)

This query is marked as a draft This query has been published by Gor1995.

SQL

SELECT site, COUNT(*) AS LINKS
FROM (
    SELECT SUBSTRING_INDEX(SUBSTRING(el_to, LOCATE('://', el_to)+3), '/', 1) AS site
    FROM page tp
    JOIN page mp ON mp.page_namespace = 0 AND mp.page_title = tp.page_title
    JOIN externallinks ON el_from = mp.page_id
    JOIN categorylinks ON cl_from = tp.page_id
    WHERE cl_to IN ('Category:WikiProject_Classical_music_articles')
    AND tp.page_namespace = 0
) sq
GROUP BY site
ORDER BY LINKS DESC

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