摘要： 1. 授予行迁移权限 alter table table_name enable row movement; 2. 到15分钟前： flashback table order to timestamp systimestamp - interval '15' minute; 到某个时间点： FLAS 阅读全文

摘要： 方法一： delete from dbyh where yhbh in(select yhbh from dbyh group by yhbh having count(*)>1) androwid not in (select min(rowid) from dbyh group by yhbh 阅读全文