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  • Linux系统中MySQL的常用操作命令

    服务:

    # chkconfig --list        列出所有系统服务
    # chkconfig --list | grep on     列出所有启动的系统服务

    # chkconfig --list mysqld

    # whereis mysql  查看文件安装路径
    # which mysql     查询运行文件所在路径(文件夹地址)
    usr/bin/mysql 是指:mysql的运行路径
    var/lib/mysql 是指:mysql数据库文件的存放路径
    usr/lib/mysql 是指:mysql的安装路径

    添加环境变量:

    # vi /etc/profile
    # export MYSQL_HOME=/usr/local/mysql
    # export PATH=$PATH:$MYSQL_HOME/bin

    1.数据库指令:

    # service mysqld start    启动MySQL
    # service mysqld restart 重启MySQL
    # service mysqld stop     停止MySQL

    2.进入MySQL表单操作

    # -u root -p  /mysql -h localhost -u root -p DatabaseName;    进入MySQL
     MySQL> show databases;            列出数据库
     MySQL>  create database XXX;      创建数据库XXX

     MySQL>  use databaseName;         使用数据库databaseName
     MySQL>  show tables;              列出表单

    MySQL> create table mytablename (ID int auto_increment not null primary key,usename varchar(20),password varchar(64),sex varchar(10),address varchar(20));  创建表单
    MySQL> drop table mytablename ;                 删除表单
    MySQL> drop database databasename;              删除数据库

    3.增删改查

    MySQL>  insert into mytablename values('','zhangsan','123456','fomale','guiyanag');  插入

    MySQL> select * from mytablename ;                 查找验证结果
    MySQL> select * from mytablename  where ID = '1';  精准查找

    MySQL> update mytablename  set address = 'shanghai' where username = 'zhangsan'; 修改zhangsan的address为shanghai

    MySQL> delete from mytablename  where ID = '1';     删除记录

    新增万能用户

      grant select On database.* to username@localhost identity by 'password'

    用户名user_1 密码是123456

    可以自任何PC上登录这个用户对数据库操作

    MySQL> grant select,insert update,delete on *.* to user_1@"%" identity by "123456";

    创建只有在本机才能操作数据库的用户

    用户名user_2 密码是123456

    MySQL> grant select,insert update,delete on *.* to user_2@localhost identity by "123456";

    登录数据库库

    MySQL> -u user_1 -p -h IP地址;

    另外附上常用的一些命令我列一下仅供参考:

    其它的mysql数据库相关的操作如下 

    (1) 创建数据库TestDB mysql> create database TestDB; 
    (2) 制定TestDB数据库为当前默认数据库 mysql> use TestDB; 
    (3) 在TestDB数据库中创建表customers mysql> create table customers(userid int not null, username varchar(20) not null); 
    (4) 显示数据库列表 mysql> show databases; 
    (5)显示数据库中的表 mysql> show tables; 
    (6)删除表customers mysql> drop table customers; 
    (7)显示customers表的结构 mysql> desc customers; 
    (8) 向customers表中插入一条记录 mysql> insert into customers(userid, username) values(1, 'hujiahui'); 
    (9) 让操作及时生效; mysql> commit; 
    (10) 查询customers中的记录 mysql> select * from customers; 
    (11) 更新表中的数据 mysql> update customers set username='DennisHu' where userid=1; 
    (12) 删除表中的记录 mysql> delete from customers; 
    (13)授予likui用户访问数据库的权限 # grant select, insert, update, delete on *.* to likui@localhost indentified by "123456";

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  • 原文地址:https://www.cnblogs.com/albertYe/p/8855180.html
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