96.创建普通用户并授权,常用SQL语句,MySQL数据库备份与恢复

一、创建普通用户并授权

1、创建用户并授权

[[email protected] ~]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.6.36 MySQL Community Server (GPL)

Copyright (c) 2000, 2017, 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> grant all on . to user01 identified by ‘123456‘
-> ; //上一行命令忘记输入‘；’，这里可以输入后继续执行
Query OK, 0 rows affected (0.01 sec)
创建user用户并授予其所有权限.（第一个表示所有数据库，第二个表示所有表）
这里的user01特指localhost上的user01
identified by ：设定密码，用单引号括起来。

2、给网络上其他机器某个用户授权

mysql> grant all on . to ‘user02‘@‘127.0.0.1‘ identified by ‘123456‘; //指定IP，即只可通过此IP登录,用户和主机之间有个@。可以使用通配符%，代表所有IP（一般不使用）
Query OK, 0 rows affected (0.00 sec)

mysql> quit
Bye
[[email protected] ~]# mysql -uuser02 -p123456 //未连接到指定IP，登录报错
Warning: Using a password on the command line interface can be insecure.
ERROR 1045 (28000): Access denied for user ‘user02‘@‘localhost‘ (using password: YES)
[[email protected] ~]# mysql -uuser02 -p123456 -h127.0.0.1 //指定IP，无误
Warning: Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 9
Server version: 5.6.36 MySQL Community Server (GPL)

Copyright (c) 2000, 2017, 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>

3、查看用户授权

mysql> show grants          //查看当前用户授权
    -> ;
+----------------------------------------------------------------------------------------------------------------------------------------+
| Grants for [email protected]                                                                                                              |
+----------------------------------------------------------------------------------------------------------------------------------------+
| GRANT ALL PRIVILEGES ON *.* TO ‘root‘@‘localhost‘ IDENTIFIED BY PASSWORD ‘*A89494294B2411291D21451D05BAB332A65AAB5D‘ WITH GRANT OPTION |
| GRANT PROXY ON ‘‘@‘‘ TO ‘root‘@‘localhost‘ WITH GRANT OPTION                                                                           |
+----------------------------------------------------------------------------------------------------------------------------------------+
2 rows in set (0.00 sec)

mysql> show grants for ‘user02‘@‘127.0.0.1‘;      //查看指定用户授权
+------------------------------------------------------------------------------------------------------------------------+
| Grants for [email protected]                                                                                            |
+------------------------------------------------------------------------------------------------------------------------+
| GRANT ALL PRIVILEGES ON *.* TO ‘user02‘@‘127.0.0.1‘ IDENTIFIED BY PASSWORD ‘*6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9‘ |
+------------------------------------------------------------------------------------------------------------------------+
1 row in set (0.00 sec)
4、授权部分权限(如读、写、查询、插入等)
mysql> grant SELECT, INSERT, UPDATE *.* user03 identified by ‘123456‘;
ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘*.* user03 identified by ‘123456‘‘ at line 1
mysql> grant SELECT, INSERT, UPDATE on *.* to user03 identified by ‘123456‘;
Query OK, 0 rows affected (0.00 sec)

mysql> show grants for user03
    -> ;
+------------------------------------------------------------------------------------------------------------------------+
| Grants for [email protected]%                                                                                                    |
+------------------------------------------------------------------------------------------------------------------------+
| GRANT SELECT, INSERT, UPDATE ON *.* TO ‘user03‘@‘%‘ IDENTIFIED BY PASSWORD ‘*6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9‘ |
+------------------------------------------------------------------------------------------------------------------------+1 row in set (0.00 sec)

二、常用SQL语句

select count(*) from mysql.user; //查询mysql库中user表的行数select * from mysql.db; //查询mysql库中db表的所有内容select db from mysql.db; //查询mysql库中db表的db字段select db,user from mysql.db; 查询mysql库中db表的db和user字段select * from mysql.db where host like ‘192.168.%‘; //查询mysql库中db表中匹配192.128.开头的内容insert into db1.t1 values (1, ‘abc‘); //在db1数据库的t1表中插入对应 内容update db1.t1 set name=‘aaa‘ where id=1; //更改db1数据库的t1表中name列内容，当id是1的时候truncate table db1.t1; //清除表内数据drop table db1.t1; //删除表drop database db1; //删除数据库

三、MySQL数据库备份与恢复

mysql> create database db1;    //创建库
Query OK, 1 row affected (0.01 sec)

mysql> use db1;     //切换库
Database changed
mysql> create table t1 (`id` int(4),`name` char(40));                   //创建表及字段
Query OK, 0 rows affected (0.02 sec)
mysql> show tables;
+---------------+
| Tables_in_db1 |
+---------------+
| t1            |
+---------------+1 row in set (0.00 sec)

mysql> select * from t1;
Empty set (0.00 sec)

mysql> quit
Bye
[[email protected] ~]# mysqldump -uroot -psdwaqw123456 mysql >/tmp/mysql.sql     //备份
Warning: Using a password on the command line interface can be insecure.
[[email protected] ~]# ls /tmp/mysql.sql
/tmp/mysql.sql
[[email protected] ~]# mysql -uroot -psdwaqw123456 db2 < /tmp/mysql.sql        //恢复
Warning: Using a password on the command line interface can be insecure.
[[email protected] ~]# mysql -uroot -psdwaqw123456
Warning: Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 29
Server version: 5.6.36 MySQL Community Server (GPL)

Copyright (c) 2000, 2017, 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> use db2                  //切换到db2，查看是否恢复成功
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
mysql> show tables;
+---------------------------+
| Tables_in_db2             |
+---------------------------+
| columns_priv              |
| db                        |
| event                     |
| func                      |
| general_log               |
| help_category             |
| help_keyword              |
| help_relation             |
| help_topic                |
| innodb_index_stats        |
| innodb_table_stats        |
| ndb_binlog_index          |
| plugin                    |
| proc                      |
| procs_priv                |
| proxies_priv              |
| servers                   |
| slave_master_info         |
| slave_relay_log_info      |
| slave_worker_info         |
| slow_log                  |
| t1                        |
| tables_priv               |
| time_zone                 |
| time_zone_leap_second     |
| time_zone_name            |
| time_zone_transition      |
| time_zone_transition_type |
| user                      |
+---------------------------+29 rows in set (0.01 sec)

mysql> quit
Bye
[[email protected] ~]# mysqldump -uroot -psdwaqw123456 mysql user > /tmp/mysqluser.sql     //备份mysql库user表
Warning: Using a password on the command line interface can be insecure.
[[email protected] ~]# mysql -uroot -psdwaqw123456 db1 < /tmp/mysqluser.sql      //恢复到db1
Warning: Using a password on the command line interface can be insecure.
[[email protected] ~]# mysql -uroot -psdwaqw123456
Warning: Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 32
Server version: 5.6.36 MySQL Community Server (GPL)

Copyright (c) 2000, 2017, 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> use db1    //查看是否成功恢复
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
mysql> show tables;
+---------------+
| Tables_in_db1 |
+---------------+
| t1            |
| user          |
+---------------+2 rows in set (0.00 sec)

mysql>

原文地址：http://blog.51cto.com/sdwaqw/2090983

时间： 2024-10-21 14:48:43

96.创建普通用户并授权,常用SQL语句,MySQL数据库备份与恢复的相关文章

mysql用户管理, 常用sql语句,mysql数据库备份恢复

mysql用户管理 新创建一个指定IP的用户,可以访问mysql的某些库某些表. 所有库的所有表,如果想指定访问某个库某些表,只需要修改名称user1 指定用户名br/>@后面的ip是指定ip,%表示所有的ipindentified by 后面是用户的密码验证用用户user1登录也可以指定localhost,登录时不输入本机ip地址即可访问查看授权,用于授权给新用户,新权限: 常用sql 语句 查看库表的行数搜索:select count() from mysql.user;搜索:select

MySQL创建用户，常用SQL语句以及数据库备份与恢复

一.创建普通用户并授权 1.创建用户并授权 [[email protected] ~]# mysql -uroot -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 1 Server version: 5.6.36 MySQL Community Server (GPL) Copyright (c) 2000, 2017, Oracle a

MySQL（用户管理，常用sql语句，数据库备份恢复，MySQL调优，恢复误操作数据）

一.MySQL用户管理. 一个MySQL数据库里可以跑多个库,总不能给所有人的程序员root用户,则可以给他们单独的用户访问数据库. 创建用户:(grant all on *.* to 'user1'是把所有库的权限给'user1,他的来源Ip是127.0.0.1,他的密码是lty123456') (第一个*是库名,如果你写成mysql.*那就是对mysql库的所有权限) (来源ip也可以写成 % ,表示来源的所有ip) (grant这种语句是不会记录到命令历史里去的,因为不安全.) mysql

MySQL用户管理、常用sql语句、数据库备份

13.4 MySQL用户管理 创建用户并授权 指定登录IP [[email protected] ~]# mysql -uroot -pEnter password: Welcome to the MySQL monitor.mysql> grant all on . to 'user1'@'127.0.0.1' identified by '123456';#创建user1用户并授予其所有权限"."(通配符)#第一个表示db_name:第二个表示tb_name#同时指定其来源I

MySQL用户管理、常用sql语句、数据库备份恢复

MySQL用户管理 MySQL分为普通用户与root用户.这两种用户的权限不一样.新建普通用户在MySQL数据库中,建立用户有3种方式:使用CREATE USER语句来创建新的用户:直接在mysql.user表中INSERT用户:使用GRANT语句来新建用户: grant命令grant all on *.* to 'user1'@'192.168.71.131' identified by '123456'; all 表示所有的权限. 表示所有的库,前面的表示库名,后面的表示所有的表'user1

2.MySQL用户管理，常用SQL语句，MySQL数据库备份与恢复

[toc] MySQL用户管理,重用SQL语句,MySQL数据库备份与恢复 一.MySQL用户管理 1.创建一个普通用户并授权 首先启动mysql,然后进入 [[email protected] ~]# /etc/init.d/mysqld start Starting MySQL... SUCCESS! [[email protected] ~]# mysql -uroot -pxavilinux Warning: Using a password on the command line in

mysql用户管理、常用sql语句、mysql数据库备份恢复

mysql用户管理 1.新增用户user1,并设置密码为123456 mysql> grant all on *.* to 'user1'@'127.0.0.1' identified by '123456'; #创建user1用户并授予其所有权限"*.*"(通配符) #第一个*:表示所有的数据库 #第二个*:表示所有的表 #127.0.0.1表示来源IP,指的只有这个IP可以连接:'%':代表所有的ip #identified by 设置密码 2.对user1用户进行授权管理

MySQL常用操作（2）MySQL用户管理、常用sql语句、 MySQL数据库备份恢复

                MySQL用户管理 创建一个普通用户并且授权 1.grant all on *.* to 'user1' identified by 'passwd'; grant all on *.* to 'user1' identified by '123456'; (创建user1用户,all表示所有权限(读.写,增.删.改.查等):*.*,前面的*表示所有的数据库,后面的*表示所有的表:identified by后面跟密码,要用单引号''引起来) grant all o

53.mysql用户管理、常用sql语句、mysql数据库备份恢复

一..mysql用户管理 grant all on *.* to 'user1'@'127.0.0.1' identified by 'passwd'; //创建以127.0.0.1访问的用户user1,密码为passwd,对所有库的所有表拥有所有权限 grant SELECT,UPDATE,INSERT on db1.* to 'user2'@'192.168.127.1' identified by 'passwd'; //创建以192.168.133.1访问的user2用户,密码为pass