我有两个不同的服务器 server1
和 server2
,现在我在 server1
和 中有
.我正在尝试像这样在 MySQL 中加入这两个表.db1
server2
中的 db2
I have two different server server1
and server2
, now I have db1
in server1
and db2
in server2
.
I am trying to join these two table in MySQL like this.
Select a.field1,b.field2
FROM [server1, 3306].[db1].table1 a
Inner Join [server2, 3312].[db2].table2 b
ON a.field1=b.field2
但是我遇到了错误.在 MYSQL 中是可能的.
But I am getting error. Is is possible in MYSQL.
之前也有类似的问题.您必须使用 联邦引擎 来执行此操作.这个想法是这样的:
There are similar questions asked previously too. You have to use FEDERATED ENGINE to do this. The idea goes like this:
您必须有一个基于另一个远程位置的表的联合表,才能以您想要的方式使用.表的结构必须完全相同.
You have to have a federated table based on the table at another remote location to use the way you want. The structure of the table have to exactly same.
CREATE TABLE federated_table (
id INT(20) NOT NULL AUTO_INCREMENT,
name VARCHAR(32) NOT NULL DEFAULT '',
other INT(20) NOT NULL DEFAULT '0',
PRIMARY KEY (id),
INDEX name (name),
INDEX other_key (other)
)
ENGINE=FEDERATED
DEFAULT CHARSET=latin1
CONNECTION='mysql://fed_user@remote_host:9306/federated/test_table';
[来源答案]
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