Oracle複製表結構及數據

1. 複製表結構及其數據： 

create table table_name_new as select * from table_name_old 

2. 只複製表結構： 

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. 只複製表數據：如果兩個表結構一樣：

insert into table_name_new select * from table_name_old 

如果兩個表結構不一樣：

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