oracle表复制

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