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: 0

mysql> create tabletest5 as select *  from test1;  
//把表test1所有内容复制为test5
QueryOK, 7 rows affected (0.11 sec)
Records:7  Duplicates: 0  Warnings: 0

mysql>

 

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: 0

mysql> select * from test6;
+----+-------+
| id | name  |
+----+-------+
|  1 | wu    |
|  2 | terry |
|  3 | tang  |
……
7 rows in set (0.00 sec)

mysql>