Home Database Mysql Tutorial win7 64位配置mysql 5.6免安装版,初始化配置和Mysql创建新用户方

win7 64位配置mysql 5.6免安装版,初始化配置和Mysql创建新用户方

Jun 07, 2016 pm 03:25 PM
64 bit m mysql win7 initialization Install Configuration

1.CREATEUSER 语法: CREATEUSER ' username'@'host 'IDENTIFIEDBY'password'; 例子:CREATEUSER'dog'@'localhost'IDENTIFIEDBY'123456'; CREATEUSER'pig'@'192.168.1.101_'IDENDIFIEDBY'123456'; CREATEUSER'pig'@'%'IDENTIFIEDBY'123456'; CREATEUSER'pig'@

1.       CREATE USER

语法:

CREATE USER 'username'@'host' IDENTIFIED BY 'password';

   例子: CREATE USER 'dog'@'localhost' IDENTIFIED BY '123456';

               CREATE USER 'pig'@'192.168.1.101_' IDENDIFIED BY '123456';

               CREATE USER 'pig'@'%' IDENTIFIED BY '123456';

               CREATE USER 'pig'@'%' IDENTIFIED BY '';

               CREATE USER 'pig'@'%';

     实例1:

       mysql> create user jss; 

        这样创建的用户,可以从任意安装了mysql客户端,并能够访问目标服务器的机器上创建连接,无须密码.例如,从ip:10.0.0.99的客户端执行连接:

         mysql -ujss -h 172.16.1.110

        查看该用户:

         mysql> select user,host,password from user where user='jss';

                SELECT USER();    //显示当前用户

     实例2:

        mysql> create user jss_ps identified by 'jss';             

       用户连接时,必须指定密码,那就可以在创建用户时,通过指定identified by子句来设定密码

       用密码登陆:

         mysql -ujss_ps -p -h 172.16.1.110

      如果希望指定的用户只能从某台指定的域(domain)或主机访问,可以在创建用户时指定host,例如,指定用户只能从10.0.0.99访问

mysql> create user jss_ip@10.0.0.99 identified by password '123456';

 

2.       使用GRANT语句

语法:mysql> grant 权限1,权限2,...权限n on 数据库名称.表名称 to 用户名@用户地址 identified by '连接口令';

权限1,权限2,...权限n代表

select,insert,update,delete,create,drop,index,alter,grant,references,reload,shutdown,process,file等14个权限

实例:

  mysql>grant select,insert,update,delete,create,drop on vtdc.employee to joe@10.163.225.87 identified by '123';

给来自10.163.225.87的用户joe分配可对数据库vtdc的employee表进行select,insert,update,delete,create,drop等操作的权限,并设定口令为123。

mysql>grant all privileges on vtdc.* to joe@10.163.225.87 identified by '123';

给来自10.163.225.87的用户joe分配可对数据库vtdc所有表进行所有操作的权限,并设定口令为123。

mysql>grant all privileges on *.* to joe@10.163.225.87 identified by '123';

给来自10.163.225.87的用户joe分配可对所有数据库的所有表进行所有操作的权限,并设定口令为123。

mysql>grant all privileges on *.* to joe@localhost identified by '123';

给本机用户joe分配可对所有数据库的所有表进行所有操作的权限,并设定口令为123。

3.       直接向mysql.user表插入记录:

mysql> insert into user (host,user,password) values ('%','jss_insert',password('jss'));

mysql>flush privileges;   //刷新系统权限表

4.       修改mysql用户密码方式:

a.       使用mysqladmin语法:mysqladmin -u用户名 -p旧密码 password 新密码

例如:mysqladmin -u root -p 123 password 456;

b.       直接修改user表的用户口令:

语法:update mysql.user set password=password('新密码') where User="phplamp" and Host="localhost";

实例:update user set password=password('54netseek') where user='root';

      flush privileges;

c.       使用SET PASSWORD语句修改密码:语法:

SET PASSWORD FOR 'username'@'host' = PASSWORD('newpassword');

如果是当前登陆用户用SET PASSWORD = PASSWORD("newpassword");

实例:

set password for root@localhost=password('');

SET PASSWORD FOR name=PASSWORD('new password');

SET PASSWORD FOR 'pig'@'%' = PASSWORD("123456");

5.        删除用户和撤销权限:

a.       取消一个账户和其权限

Drop USER user;

drop user username@'%'

drop user username@localhost

b.       取消授权用户:

语法:REVOKE privilege ON databasename.tablename FROM 'username'@'host';

例子: REVOKE SELECT ON *.* FROM 'pig'@'%';

  REVOKE SELECT ON test.user FROM 'pig'@'%';

  revoke all on *.* from sss@localhost ;

  revoke all on user.* from 'admin'@'%';

      SHOW GRANTS FOR 'pig'@'%';     //查看授权

c.       删除用户:

语法: Delete from user where user = "user_name" and host = "host_name" ;

例子:delete from user where user='sss' and host='localhost';

 

二、数据库表

1.查看所有数据库: 数据库目录:/usr/local/mysql/data

   mysql> SHOW DATABASES;   //显示数据库

   mysql> USE abccs         //进入数据库

   mysql> SHOW TABLES;      //显示表

   mysql> DESCRIBE mytable; //显示表结构

   mysql> CREATE DATABASE abccs;    //创建一个数据库

   mysql> CREATE TABLE mytable (name VARCHAR(20), sex CHAR(1), birth DATE, birthaddr VARCHAR(20));   //创建表

   mysql> insert into mytable values (‘abccs’,‘f’,‘1977-07-07’,‘china’);                     //插入表数据

   使用文本方式插入数据:

    {

      mysql.txt内容:abccs f 1977-07-07 china   

                     mary f 1978-12-12 usa 

                     tom m 1970-09-02 usa

      mysql> LOAD DATA LOCAL INFILE "mytable.txt" INTO TABLE pet;    //导入TXT文件数据

     } 

 

2.删除数据库:

  mysql> drop database drop_database;   //删除一个已经确定存在的数据库

         alter table 表名 ENGINE=存储引擎名;  //修改表的存储引擎

         alter table 表名 drop 属性名; //删除字段

         alter table 旧表名 rename to 新表名;  //修改表名

         alter table 表名 modify 属性名 数据类型;  //修改字段数据类型

         alter table 表名 change 旧属性名 新属性名 新数据类型; //修改字段名

         alter table 表名 drop FOREING KEY 外键别名; //删除子表外键约束

         增加表字段:

         { alter table example add phone VACGAR(20); //增加无约束的字段

           alter table example add age INT(4) NOT NULL; //增加万增约束的字段

           alter table example add num INT(8) PRIMARY KEY FIRST;  //表的第一个位置增加字段

           alter table example add address VARCHAR(30) NOT NULL AFTER phone;  //表的指定位置之后增加字段

           alter table example modify name VARCHAR(20) FIRST; //把字段修改到第一位

           alter table example modify num INT(8) ATER phone;//把字段修改到指定字段之后

         }

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