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  • mysql 复制表结构 / 从结果中导入数据到新表

    这只会复制结构:

    mysql> create table a like mysql1;
    Query OK, 0 rows affected (0.03 sec)
    
    mysql> desc a;
    +----------+----------+------+-----+---------+-------+
    | Field    | Type     | Null | Key | Default | Extra |
    +----------+----------+------+-----+---------+-------+
    | user     | char(80) | NO   |     |         |       |
    | host     | char(60) | NO   |     |         |       |
    | password | char(41) | NO   |     |         |       |
    +----------+----------+------+-----+---------+-------+
    3 rows in set (0.00 sec)
    
    mysql> select * from a;
    Empty set (0.00 sec)
    
    mysql>
    

    这除了复制结构, 还会复制结果集:

    mysql> create table t8 select user,host from mysql.user;
    Query OK, 1 row affected (0.03 sec)
    Records: 1  Duplicates: 0  Warnings: 0
    
    mysql> desc t8;
    +-------+----------+------+-----+---------+-------+
    | Field | Type     | Null | Key | Default | Extra |
    +-------+----------+------+-----+---------+-------+
    | user  | char(80) | NO   |     |         |       |
    | host  | char(60) | NO   |     |         |       |
    +-------+----------+------+-----+---------+-------+
    2 rows in set (0.01 sec)
    
    mysql> select * from t8;
    +------+-----------+
    | user | host      |
    +------+-----------+
    | root | localhost |
    +------+-----------+
    1 row in set (0.00 sec)
    
    mysql>
    

     用法例子:

    #创一个一样的表
    create table a_back like mysql.user;
    
    #导入另一个表中的所有数据
    
    insert into a_back select * from mysql.user;
    
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  • 原文地址:https://www.cnblogs.com/perl6/p/7057683.html
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