MySQL的命令
1.mysql连接后快捷键
\? #帮助
\c #终止当前命令
\r #重连数据库
\d #修改命令结束符
\e #写入文件，同时执行多条命令
\G #垂直显示结果
\q #退出数据库
\g #命令结束
\h #帮助
\t #取消写入文件
\T #将执行过程与结果写入一个文件
\p #打印一次命令
\R #修改命令提示符
source (\.) #读取sql文件
status (\s) #查看数据库状态
system (\!) #在数据库里执行命令行命令
use (\u) #切换数据库
prompt (\R) Change your mysql prompt.
nopager (\n) Disable pager, print to stdout.
pager (\P) Set PAGER [to_pager]. Print the query results via PAGER.
charset (\C) Switch to another charset. Might be needed for processing binlog with multi-byte charsets.
warnings (\W) Show warnings after every statement.
nowarning (\w) Don't show warnings after every statement.
2.help命令
mysql> help
mysql> help contents
mysql> help select
mysql> help create
mysql> help create user
mysql> help status
mysql> help show
3.客户端mysqladmin命令
1.修改密码
mysqladmin -uroot -p123 password 123456
2.关闭数据库
#一般多实例使用
mysqladmin -uroot -p123 -S /tmp/mysql.sock shutdown
3.建库
[root@db03 ~]# mysqladmin -uroot -p create zengdao
Enter password:
4.删库
[root@db03 ~]# mysqladmin -uroot -p drop zeng
Enter password:
Dropping the database is potentially a very bad thing to do.
Any data stored in the database will be destroyed.
Do you really want to drop the 'zeng' database [y/N] y
Database "zeng" dropped
5.查看数据库配置
[root@db03 ~]# mysqladmin -uroot -p variables | grep server_id
Enter password:
| server_id | 4 |
| server_id_bits | 32 |
6.确认数据库是否启动
[root@db03 ~]# mysqladmin -uroot -p123 ping
Warning: Using a password on the command line interface can be insecure.
mysqld is alive
7.查看数据库信息
[root@db03 ~]# mysqladmin -uroot -p123 status
Warning: Using a password on the command line interface can be insecure.
Uptime: 143 Threads: 1 Questions: 22 Slow queries: 0 Opens: 70 Flush tables: 1 Open tables: 63 Queries per second avg: 0.153
8.刷新授权表
#相当于在数据库中执行 flush privileges
[root@db03 ~]# mysqladmin -uroot -p123 reload
9.刷新binlog
#如果有主从，不要刷新binlog，如果没有主从，可以先刷新binlog再做主从
[root@db03 ~]# mysqladmin -uroot -p123 flush-log
