USE elwiki_p;

SELECT CONCAT("#") as number, user_id, CONCAT("[[Χρήστης:",user_name,"|",user_name,"]]") AS user_name, SUM(CAST(rev.rev_len as signed)-CAST(parent.rev_len as signed)) AS byte_count, COUNT(rev.rev_id) as edit_count

FROM user

JOIN revision rev

ON user_id = rev.rev_user

JOIN revision parent

ON rev.rev_parent_id = parent.rev_id

JOIN page

ON page_id = parent.rev_page

WHERE page_namespace = 0

AND rev.rev_timestamp >= 20151101000000

AND rev.rev_timestamp <= 20151131235959

AND parent.rev_timestamp <= 20151131235959

GROUP BY user_name

ORDER BY byte_count DESC

LIMIT 500;