oracle 複製表結構 複製表數據 sql 語句

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：若是兩個表結構同樣：insert into table_name_new select * from table_name_old

    若是兩個表結構不同：insert into table_name_new(column1,column2...) select column1,column2... from table_name_old