RedHat下MySQL的基本使用方法分享

这篇文章主要为大家详细介绍了RedHat下MySQL的基本使用方法分享，具有一定的参考价值，可以用来参考一下。

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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 -pEnter 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 14Server 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 itsaffiliates. Other names may be trademarks of their respectiveowners.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)

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