数据误删除怎么恢复

SQL操作

• 先查询数据,并确认where范围

select * from 表名 as of timestamp to_timestamp('删除时间点','yyyy-mm-dd hh24:mi:ss');
例如：
select * from student as of timestamp to_timestamp('20210412','yyyy-mm-dd hh24:mi:ss');
select * from student as of timestamp to_timestamp('20210412','yyyy-mm-dd hh24:mi:ss') where id = 1;

• 插入数据

insert into 表名 ( select * from 表名  
       as of timestamp to_timestamp('删除时间点','yyyy-mm-dd hh24:mi:ss'  )
 );
例如：
insert into student ( select * from student 
       as of timestamp to_timestamp('20210412','yyyy-mm-dd hh24:mi:ss'  )
 );
insert into student ( select * from student 
       as of timestamp to_timestamp('20210412','yyyy-mm-dd hh24:mi:ss'  )
 ) where id = 1;

• 后续待更新