1. 下载RPM安装包， 因为安装MySQL的时候，软件会需要一依赖关系， 所以建议把所有的安装包下载下载， 再依次安装所以的RPM包。 2. 在RedHat下安装后, root密码为空, 设置MySQL的 root密码
1. 下载RPM安装包， 因为安装MySQL的时候，软件会需要一依赖关系， 所以建议把所有的安装包下载下载， 再依次安装所以的RPM包。 2. 在RedHat下安装后, root密码为空, 设置MySQL的 root密码, 用下面的命令来设置. [nb@SIT ~]$ mysql -u root -p[newpassword] 3. 修改MySQL的root 密码, 用下面 的命令: [nb@SIT ~]$ mysqladmin -u root -p[oldpasswrod] password[newpassword] 4. 用root登录MySQL, 输入下面的命令, 再输入密码, 就可以以root的身份登录到MySQL [nb@SIT ~]$ mysql -u root -p Enter password: 5. 出现下面的字符， 就表示成功登录到了MySQL, Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 14 Server version: 5.5.14 MySQL Community Server (GPL) Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> 6. 显示当前已经存在的数据库，输入: show databases; mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | test | +--------------------+ 4 rows in set (0.00 sec) 7. 创建一个新的数据库, 输入: create database [name]; mysql> create database mytest; Query OK, 1 row affected (0.00 sec) mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | mytest | | performance_schema | | test | +--------------------+ 5 rows in set (0.00 sec) 8. 删除一个已经存在的数据库, 输入: drop database [name]; mysql> drop database mytest; Query OK, 0 rows affected (0.00 sec) mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | mysql | | performance_schema | | test | +--------------------+ 4 rows in set (0.00 sec) 9. 创建一张表, 输入: create table [name] [option...] 显示表的内容: describe [table name]; mysql> create table device -> ( -> id int, -> pn varchar(8), -> descript varchar(30) -> ); Query OK, 0 rows affected (0.01 sec) mysql> describe device; +----------+-------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +----------+-------------+------+-----+---------+-------+ | id | int(11) | YES | | NULL | | | pn | varchar(8) | YES | | NULL | | | descript | varchar(30) | YES | | NULL | | +----------+-------------+------+-----+---------+-------+ 3 rows in set (0.00 sec) 10. 向表里面添加数据, 输入: insert into [table_name] set option1=[value], option2=[value] ... mysql> insert into device set id=1,pn="abcd",descript="this is a good device"; Query OK, 1 row affected (0.01 sec) mysql> insert into device set id=2,pn="efgh",descript="this is a good device"; Query OK, 1 row affected (0.00 sec) 11. 查看表里面的内容, 输入: select [col_name] from [table_name] mysql> select * from device; +------+------+-----------------------+ | id | pn | descript | +------+------+-----------------------+ | 1 | abcd | this is a good device | | 2 | efgh | this is a good device | +------+------+-----------------------+ 2 rows in set (0.01 sec) 12. 选择性的查询表里的内容, * 是通配符, 表示所有的, 查询单项的时候, 输入: select * from [table_name] where opiont=[value]; mysql> select * from device where id=2; +------+------+-----------------------+ | id | pn | descript | +------+------+-----------------------+ | 2 | efgh | this is a good device | +------+------+-----------------------+ 1 row in set (0.00 sec) 13. 选择性查询表里的内容, 输入: select [option]...[option] from [table_name] where [option]=[value]; mysql> select id,descript from device where id=2; +------+-----------------------+ | id | descript | +------+-----------------------+ | 2 | this is a good device | +------+-----------------------+ 1 row in set (0.00 sec)
