SQL
AخA
SELECT
T1.rev_user_text,
count(1) AS edits,
sum(cast(T1.rev_len AS signed) - cast(IFNULL(T2.rev_len, 0) AS signed)) AS bytes,
U.user_registration
FROM ukwiki_p.revision T1
LEFT JOIN ukwiki_p.revision T2
ON T1.rev_parent_id = T2.rev_id
LEFT JOIN ukwiki_p.user U
ON T1.rev_user = U.user_id
WHERE U.user_registration >= 20171101000000
AND T1.rev_timestamp >= 20180101000000
AND T1.rev_timestamp < 20180201000000
GROUP BY T1.rev_user_text
ORDER BY bytes DESC
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