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在做MySQL主从同步的时候通过：
mysql> show slave status\G; *************************** 1. row *************************** Slave_IO_State: Waiting for master to send event Master_Host: 192.168.18.139 Master_User: rep Master_Port: 3307 Connect_Retry: 60 Master_Log_File: mysql-bin.000001 Read_Master_Log_Pos: 107 Relay_Log_File: relay-bin.000002 Relay_Log_Pos: 253 Relay_Master_Log_File: mysql-bin.000001 Slave_IO_Running: Yes Slave_SQL_Running: Yes Seconds_Behind_Master: 0 Master_SSL_Verify_Server_Cert: No Master_Server_Id: 3 1 row in set (0.00 sec) ERROR: No query specified ==>出现此错误
出现此错误的原因是因为执行命令：show slave status\G;的时候，多加了一个“;”分号。
当执行命令的时候去掉分号，就不会出现此错误。
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.18.139
Master_User: rep
Master_Port: 3307
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 107
Relay_Log_File: relay-bin.000002
Relay_Log_Pos: 253
Relay_Master_Log_File: mysql-bin.000001
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Seconds_Behind_Master: 0
1 row in set (0.00 sec)
mysql>
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原文地址：http://www.cnblogs.com/mrwang1101/p/5192854.html
