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SQL

SELECT actor_name, SUM(ABS(CAST(r1.rev_len AS SIGNED)-COALESCE(CAST(r2.rev_len AS SIGNED), 0))) AS size FROM revision AS r1 JOIN page ON rev_page = page_id AND page_namespace = 0 LEFT JOIN revision AS r2 ON r1.rev_parent_id = r2.rev_id JOIN actor ON r1.rev_actor = actor_id WHERE r1.rev_page = 9330 GROUP BY actor_name ORDER BY size DESC

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