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;OR
create table table_name_new like table_name_old ;3. 只复制表数据：insert into table_name_new select * from table_name_old ;OR
insert into table_name_new(column1,column2...) select column1,column2... from table_name_old;
