SQL
AخA
select
sum(
IF(
rr.rev_actor = 1388,
0,
-- abs(2-3)
abs((select (rr.rev_len - rrr.rev_len) as diff from revision rrr where rrr.rev_id = rr.rev_parent_id))
)
) as haidaless_sum
from revision rr
where rr.rev_page = 4736320
group by rev_page
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