oracle分页查询时，这么能同时得到rowid？
select * from
（select c1,c2,rownum as r,rowid from table where rownum<=20)
r>=11

这句话报错，rowid 处有问题，请问这么能够同时查询出rowid，谢谢
[解决办法]

select * from
（select c1,c2,rownum as r,rowid "rowid" from table where rownum<=20)
where r>=11

[解决办法]
select * from
（select c1,c2,rownum as r,rowid "rowid" from table where rownum<=20)
where r>=11

或者
select * from
（select c1,c2,rownum as r,rowid ss from table where rownum<=20)
where r>=11