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复制结构:仿照student表结构复制一张new_student表,新表是空的:
create table new_student like student;
复制数据:但是没主键,结构不重要:
create table new_student2 as
(
select * from student
);
复制表结构与数据,一模一样:
insert into new_student3 select * from student;