First, the relationship between the distinction:
Database server (a computer)
Database management system (software)
Database (db) a folder
A table inside the database file
Records (data) :( plurality of field) line of data
installation
1, to initialize the entire MySQL
storage database generation mysqld --initialize-insecure data directory => File => Record
2, open client:
MySQL-uroot--p
3, in the view of all database directory
show databases;
4. Create a database
create database db1;
5, install windows service
mysqld --install to install windows service
mysqld --remove Delete windows service
6, open the service
Open net start mysql service
shut down service net stop mysql
7, set a password
Password ALTER USER 'root' @ 'localhost' IDENTIFIED BY 'newpassword' here if you just change the current user password can not write the name of the user to write directly to user ()
## Second, the special case (when the root password forgotten):
## When the administrator password is forgotten crack the code to skip the grant tables turned on the server
Kill the process taskkill / F / PID process ID
Open skip command authorization table mysqld --console --skip-grant-tables --shared-memory
Refresh authority FLUSH PRIVILEGES; tell the server to reload the grant tables to account management statement works
设置密码 ALTER USER 'root'@'localhost' IDENTIFIED BY 'newpassword'
最后停止服务器进程重新启动，完毕
修改密码
登录进入mysql 进行修改 ALTER USER 'root'@'localhost' IDENTIFIED BY 'newpassword'
只更改当前登录用户的密码 ALTER USER USER() IDENTIFIED BY 'password';
命令行更改密码
mysqladmin -uroot -p 旧密码 password 新密码
三、常用命令：
| 命令 | 作用 |
|---|---|
| \s; | 查看当前mysql软件的配置 |
| mysql -uroot -p | 登录mysql |
| show datebases | 查看所有的数据库 |
| create database db1; | 创建数据库 |
| drop database db1; | 删除数据库 |
| use db1; | 进入/切换数据库 |
| select database(); | 查看当前数据库 |
| create user 'name'@'ip' identified by 'pwd' | 添加用户 |
| grant insert,select,update on db1.t1 to "user"@"ip"; | 为添加的用户配置权限，只有root用户才能配置 |
表的操作
| show tables; | 查看当前数据库里的所有的表 |
| create table t1(id int,name char(10)); | 创建表 |
| insert into t1(id,name) values(1,'wer'),(2,'sdf'); | 插入数据 |
| desc table_name | 查看表结构的详细信息 |
| show create table t1; | 查看当前这张表 |
| select * from t1; | 查看表里的内容 |
| drop table t1; | 删除这张表 |
| update t1 set user='123' where id=8; | 修改记录 |
| delete from t1 where id=8; | 删除记录 |
| alter table t1 change 原字段名字 修改后的名字 字段属性; | 修改字段名字 |
| alter table t1 modify 字段名 属性; | 修改字段属性 |
| alter table t1 add 字段名 属性; | 增加字段 |
| alter table t1 drop 字段名; | 删除字段 |