Question

oracle 如何备份一个表的数据 或者是将一个表中的数据插入到令一张新表里

Answer 1

完全COPY另一张表
create table aa as select * from and05
将结果集的数据插入到某表中
insert into and07(cnd215,cnd224,cnd222,cnd225) select z.cnd215,sysdate,
(select sum(cnd037) from and02 a where a.cnd032='20002901' and a.cnd215=z.cnd215) A,
(select sum(cnd037) from and02 a where a.cnd032='20002902' and a.cnd215=z.cnd215) B
from and02 z where trunc(cne007,'mm') = trunc(sysdate,'mm') group by cnd215
针对“完全COPY另一张表”的演练
truncate table aa
insert into aa select * from and05;
用另一个表的结果去更新某张表
update and02 a set a.and07id=(select b.and07id from and07 b where a.cnd215=b.cnd215 and trunc(cnd224,'mm')=trunc(sysdate,'mm'));

Answer 2

只复制空表结构
create table 新表名 as
select * from 旧表名 where 1<>1;

复制表结构和数据
create table 新表名 as
select * from 旧表名

Answer 3

insert into 《新表表名》 select * from 《旧表表名》