MySQL表复制

MySQL表复制

MySQL Server doesn't support the SELECT ... INTO TABLE Sybase SQL extension. Instead, MySQL Serversupports the INSERT INTO ... SELECT standard SQLsyntax, which is basically the same thing.    //官方文档说明

MySQL是不支持SELECT … INTO语法的，使用INSERT INTO … SELECT替代相同用法，以下是两种表复制方法

1、  表不存在复制

mysql>show tables;+-----------------+|Tables_in_test1 |+-----------------+|cpu_stat        ||test1           ||test2           ||test3           |+-----------------+4rows in set (0.02 sec)mysql> create tabletest4 as select *  from test1 where 1=0; //仅复制表结构QueryOK, 0 rows affected (0.06 sec)Records:0  Duplicates: 0  Warnings: 0mysql> create tabletest5 as select *  from test1;  //把表test1所有内容复制为test5QueryOK, 7 rows affected (0.11 sec)Records:7  Duplicates: 0  Warnings: 0mysql>

 

2、  表已经存在复制

mysql> create table test6(id int not null auto_increment primary key, name varchar(20));Query OK, 0 rows affected (0.13 sec)mysql> insert into test6(name)  select name from test1;//只复制name列Query OK, 7 rows affected (0.06 sec)Records: 7  Duplicates: 0  Warnings: 0mysql> select * from test6;+----+-------+| id | name  |+----+-------+|  1 | wu    ||  2 | terry ||  3 | tang  |……7 rows in set (0.00 sec)mysql>