mysql数据库 for ubuntu
本文将从基础出发,介绍Mysql在Linux环境下的安装和基本使用命令,仅适用于Mysql初学者。 安装Mysql数据库 这里介绍最最简单的安装方式,至于编译安装,可以下载安装包, ./configure 生成Makefile,然后 make clean, make , make test, make install 我想这
本文将从基础出发,介绍Mysql在Linux环境下的安装和基本使用命令,仅适用于Mysql初学者。
安装Mysql数据库
这里介绍最最简单的安装方式,至于编译安装,可以下载安装包, ./configure 生成Makefile,然后 make clean, make , make test, make install 我想这些命令应该很基本了吧,这里不再敖述。
1. 安装命令
king@king-desktop:~$ sudo apt-get install mysql-server mysql-client
2. 查看数据库版本,这里密码为“11”
king@king-desktop:~$ sudo mysqladmin -u root -p version Enter password: mysqladmin Ver 8.42 Distrib 5.1.70, for debian-linux-gnu on i486 Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
3. 查看Mysql服务状态,启动或者关闭Mysql服务
king@king-desktop:~$ service mysql status mysql start/running, process 899 king@king-desktop:~$ sudo /etc/init.d/mysql start|stop|restart
4. 登陆数据库,并退出操作
命令里的 -u 指的是用户名, 这里指的是 root, -p 后接密码, 这里指安装数据库时候设置的密码,笔者的为11
king@king-desktop:~$ sudo mysql -uroot -p11
5. 数据库内的基本操作
// 显示数据库 mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | jxc | | mysql | +--------------------+ 3 rows in set (0.08 sec) // 使用某个数据库 mysql> use mysql Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed // 创建数据库 mysql> create database thinkphp; Query OK, 1 row affected (0.00 sec) // 删除数据库 mysql> drop database thinkphp; Query OK, 0 rows affected (0.07 sec) // 显示数据库中的某张表 mysql> show tables; // 显示某个表的结构 mysql> describe slow_log; // 选择显示的表内容 mysql> select * from slow_log; Empty set (0.00 sec) // 删除表 mysql> drop table slow_log; // 导入数据库 mysql> source /var/www/webPage.sql; 或者命令: ~$ sudo mysql –uroot –p11 thinktest <h3 id="mysql-表结构AUD操作">mysql 表结构AUD操作</h3> <pre class="brush:php;toolbar:false">添加表字段 alter table tablename add elemName varchar(10) not null; 修改某个表字段类型 alter table tablename change elemName elemNewName varchar(10) null; alter table tablename modify elemName varchar(10) null; 删除某个字段 alter table tablename drop elemName; 向数据表中插入数据 insert into tablename (elem1,elem2,...) values (A,B,...); 删除数据表中数据 delete from tablename where id>1 order by time limit 1; 更新数据表中数据 UPDATE tablename SET elem1=1, elem2=2 WHERE id=1;

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