原帖由 nyfor 于 2008-5-7 14:49 发表
527091
with a as (select distinct round(a.x + b.x) x,round(a.y + b.y) y from
(select (sum(x) over(order by n)) x,
round(sum(y) over(order by n)) y
from (select n, cos(n/30 * 3.1415926)*2 x,
sin(n/30 * 3.1415926) y
from (select rownum - 1 n from all_objects where rownum