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如何对MySQL数据表进行复制、表结构复制
为大家介绍如何对MySQL进行复制、表结构复制,也可以分字段进行复制。也可以将一张表中的数据复制到另一张表当中。
1、复制表结构(语法 creata table 旧表 select * from 新表)
create table t1( id int unsigned auto_increment primary key, name varchar(32) not null default '', pass int not null default 0 );
desc 查看表结构
创建表 t2 同时复制表 t1 表结构 create table t2 select * from t1;
desc t2 查看表结构
注意:两张的表字段结构一样,但是 主键 primary key 和 自增 auto_increment 没有了,所以这种方法不推荐大家使用,那如何才能创建出两张完全一样的表呢,办法肯定有的,如下面语句。
create table t2 like t1;
这就可以创建一张 t2 和 t1 完全一样的表了。
2、指定字段复制表结构
语法: create table 新表 select 字段1,字段2 … from 旧表
3、复制表中数据
假设要把表 t1 中的数据全部复制到表 t2中insert into t2 select * from t1;如果只想复制某个字段 insert into t2(字段1,字段2) select 字段1,字段2 from t1;
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