oracle 復制表結構 復制表數據 sql 語句

1. 復制表結構及其數據： create table table_name_new as select * from table_name_old

 2. 只復制表結構： 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. 只復制表數據：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