mysql 运维命令

数据库备份导入

mysqldump -u root -p   main_3_2_0 > /main_3_2_0.sql

use main_3_2_0

source /main_3_2_0.sql

#查询正在执行的sql 
show full processlist
# 使用 kill id 来杀死进程
kill 483

#锁定主数据库
flush tables with read lock

INSERT INTO `kettle`.`user_copy` (`id`, `name`, `telphone`) VALUES ("4", "4", "4");
# [SQL]INSERT INTO `kettle`.`user_copy` (`id`, `name`, `telphone`) VALUES ("4", "4", "4");
# [Err] 1223 - Can"t execute the query because you have a conflicting read lock


#解锁主数据库
#切换回主数据库的终端，进行表解锁操作。

unlock tables;