oracle表機構和資料複製,oracle表機構

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oracle表機構和資料複製,oracle表機構

1. 複製表結構及其資料,產生一張新的表:

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. 只複製表資料:

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,指定列名:

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

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