如果是两个不同数据库放在同一台机器上数据库A,数据库B:
数据库A.a表用到数据库B.b表中的外键,可以用:
A表:
KEY pubClassId (pubClassId),
CONSTRAINT pubfield_pubfk_1 FOREIGN KEY (pubClassId) REFERENCES B.b (id)
这样B.b来表示,那如果B表在其他服务器上,该如何实现,是否需要写上服务器B的IP和数据库用户名密码? 谢谢。
数据库A.a表用到数据库B.b表中的外键,可以用:
A表:
KEY pubClassId (pubClassId),
CONSTRAINT pubfield_pubfk_1 FOREIGN KEY (pubClassId) REFERENCES B.b (id)
这样B.b来表示,那如果B表在其他服务器上,该如何实现,是否需要写上服务器B的IP和数据库用户名密码? 谢谢。
http://www.cnblogs.com/lben/archive/2012/11/19/2777632.htmlslave一直显示:mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.120
Master_User: admin
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: log.000001
Read_Master_Log_Pos: 328
Relay_Log_File: chengxin-relay-bin.000005
Relay_Log_Pos: 277
Relay_Master_Log_File: log.000001
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: mydb
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 328
Relay_Log_Space: 453
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
Master_UUID: 78622a0b-5aa9-11e3-920d-81201f3cd05f
Master_Info_File: /var/lib/mysql/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set:
Executed_Gtid_Set:
Auto_Position: 0
1 row in set (0.00 sec)ERROR:
No query specified主服务端那边也是启动的(设置了mydb),但是从服务器一直没同步数据,请问可能是什么原因?谢谢。