oracle 复制表结构 复制表数据 sql 语句

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