Pickled accounts report

SQL

use fawiki_p;
set @year = year(curdate());
set @month = month(curdate());
set @gapyears = 2;


select rev_user_text,
str_to_date(left(min(rev_timestamp), 8), '%Y%m%d') as sunrise,
str_to_date(left(min(sunset), 8), '%Y%m%d') as sunset
from revision
join (
  select rev_user, max(rev_timestamp) sunset
  from revision
  where rev_user <> 0
  and rev_timestamp < concat(@year - @gapyears, LPAD(@month, 2, 0), '01000000')
  group by rev_user
) old
on old.rev_user = revision.rev_user
where rev_user <> 0
and rev_timestamp > concat(@year, LPAD(@month, 2, 0), '01000000')
and rev_user not in
(
  select rev_user
  from revision
  where rev_user <> 0
  and rev_timestamp < concat(@year, LPAD(@month, 2, 0), '01000000')
  and rev_timestamp > concat(@year - @gapyears, LPAD(@month, 2, 0), '01000000')
)
group by rev_user_text
SQL

Checking query status...
