Oracle复制表结构及数据

1. 复制表结构及其数据： 

create table table_name_new as select * from table_name_old 

2. 只复制表结构： 

create table table_name_new as select * from table_name_old where 1=2; 

或者：

create table table_name_new like table_name_old

3. 只复制表数据：如果两个表结构一样：

insert into table_name_new select * from table_name_old 

如果两个表结构不一样：

insert into table_name_new(column1,column2...) select column1,column2... from table_name_old