Number of registrations per month

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

SQL

select
	actor_name as user,
    avg(convert(`after`.rev_len, signed) - convert(`before`.rev_len, signed)) as 'avg diff'
from revision as after
join revision as `before` on `before`.rev_id = `after`.rev_parent_id
join actor on actor_id = `after`.rev_actor
group by `after`.rev_actor
order by avg(convert(`after`.rev_len, signed) - convert(`before`.rev_len, signed))
limit 100;

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