Mysql 常用操作记录

1.查看数据库:

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
5 rows in set (0.25 sec)

2.创建数据库,create 数据库名字 default charset 编码格式 collate 字符集;

mysql> create database test_db default charset utf8 collate utf8_general_ci;
Query OK, 1 row affected, 2 warnings (0.21 sec)

3:使用数据库

mysql> use test_db;
Database changed

4.用户管理:

　　4.1:创建用户:

mysql> create user 'test'@'localhost' identified by '';
Query OK, 0 rows affected (0.03 sec)　　

　　

出现错误: The MySQL server is running with the --skip-grant-tables option so it cannot execute this statement

　　解决:

mysql> flush privileges;
Query OK, 0 rows affected (0.05 sec)

　　4.2删除用户:

mysql> drop user 'test'@'localhost';
Query OK, 0 rows affected (0.11 sec)

　　4.3修改用户名;

mysql> rename user 'test'@'localhost' to 'new_test'@'localhost';
Query OK, 0 rows affected (0.04 sec)

　　4.4修改密码

　　set password for 'name' =password('new_password');  我mac上的mysql 这个会语法错误，版本是Server version: 8.0.13 MySQL Community Server - GPL,查询后判断为新版本的不支持set password的语法

mysql> alter user 'new_test'@'localhost' identified by '';
Query OK, 0 rows affected (0.08 sec)

5.权限相关:

　　5.1显示用户的权限:

　　

mysql> show grants for 'root'@'localhost';
+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Grants for root@localhost                                                                                                                                                                                                                                                                                                                                                                                |
+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| GRANT SELECT, INSERT, UPDATE, DELETE, CREATE, DROP, RELOAD, SHUTDOWN, PROCESS, FILE, REFERENCES, INDEX, ALTER, SHOW DATABASES, SUPER, CREATE TEMPORARY TABLES, LOCK TABLES, EXECUTE, REPLICATION SLAVE, REPLICATION CLIENT, CREATE VIEW, SHOW VIEW, CREATE ROUTINE, ALTER ROUTINE, CREATE USER, EVENT, TRIGGER, CREATE TABLESPACE, CREATE ROLE, DROP ROLE ON *.* TO `root`@`localhost` WITH GRANT OPTION |
| GRANT BACKUP_ADMIN,BINLOG_ADMIN,CONNECTION_ADMIN,ENCRYPTION_KEY_ADMIN,GROUP_REPLICATION_ADMIN,PERSIST_RO_VARIABLES_ADMIN,REPLICATION_SLAVE_ADMIN,RESOURCE_GROUP_ADMIN,RESOURCE_GROUP_USER,ROLE_ADMIN,SET_USER_ID,SYSTEM_VARIABLES_ADMIN,XA_RECOVER_ADMIN ON *.* TO `root`@`localhost` WITH GRANT OPTION                                                                                                  |
| GRANT PROXY ON ''@'' TO 'root'@'localhost' WITH GRANT OPTION                                                                                                                                                                                                                                                                                                                                             |
+----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
3 rows in set (0.01 sec)

　　5.2授权,必须写明表名,如果是所有加上*;

权限需要小于自己的权限，注意host的限制，

mysql> grant select on mysql.* to 'new_test'@'localhost';
Query OK, 0 rows affected (0.07 sec)

all privileges  除grant外的所有权限
            select          仅查权限
            select,insert   查和插入权限
            ...
            usage                   无访问权限
            alter                   使用alter table
            alter routine           使用alter procedure和drop procedure
            create                  使用create table
            create routine          使用create procedure
            create temporary tables 使用create temporary tables
            create user             使用create user、drop user、rename user和revoke  all privileges
            create view             使用create view
            delete                  使用delete
            drop                    使用drop table
            execute                 使用call和存储过程
            file                    使用select into outfile 和 load data infile
            grant option            使用grant 和 revoke
            index                   使用index
            insert                  使用insert
            lock tables             使用lock table
            process                 使用show full processlist
            select                  使用select
            show databases          使用show databases
            show view               使用show view
            update                  使用update
            reload                  使用flush
            shutdown                使用mysqladmin shutdown(关闭MySQL)
            super