ww sys user lookup table created by the user (already commited)
select * from ww.wwTable;
Average user lisi query the user table ww
grant select on wwTable to lisi;
select * from ww.wwTable;
Object unauthorized operation
grant insert on wwTable to lisi; grant all on wwTable to lisi;
Operation of revocation
revoke all on wwTable from wwTable;
select * from ww.wwTable;
从ww.wwTable select *;