Untitled query #91633

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

SQL

USE trwiki_p;

SELECT 
    actor_name, 
    SUM(rev.rev_len - COALESCE(prev.rev_len, 0)) AS tdif
FROM revision rev
JOIN actor ON rev.rev_actor = actor.actor_id
LEFT JOIN revision prev ON rev.rev_parent_id = prev.rev_id
GROUP BY actor_name
ORDER BY tdif DESC
LIMIT 100;

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