Oracle SQL快速复制表结构或数据

1、复制表结构

     create table table1 as select * from table2 where 1=2;

2、复制表结构及数据

     create table table1 as select * from table2;

3、复制数据

      insert into table1 select * from table2;

4、按字段复制

      insert into table1(column1,column2) select column1,column2 from table2;