b - Quarry

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

SQL

SELECT actor_name as user,
COUNT(*) as cnt
FROM revision_userindex
JOIN change_tag
ON rev_id = ct_rev_id
JOIN actor_revision
ON actor_id = rev_actor
WHERE ct_tag_id = 
(SELECT ctd_id FROM change_tag_def
WHERE ctd_name = 'mw-rollback')
AND actor_user IN
(select ug_user from user_groups
where ug_group = 'rollbacker')
GROUP BY user
ORDER BY cnt DESC
LIMIT 10;

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