mysql create user

-- 查看系統用戶
select Host,User,Password from mysql.user;

-- 創建一個遠程用戶 
create user test identified by '123456'; 

-- 分配權限 
grant all privileges on *.* to 'test'@'%'identified by '123456' with grant option; 

-- 刷新mysql用戶權限
flush privileges ; 

-- 修改指定用戶密碼 
update mysql.user set password=password('新密碼') where User="test" and Host="localhost"; 

-- 刪除用戶 
delete from user where User='test' and Host='localhost';

 

-- 查看mysql支持字符集
show variables like "% character %";

 

-- 建立數據庫並指定編碼
create database app_relation character set utf8; 

-- 修改數據庫編碼
alter database app_relation character set utf8; 

 

 

CREATE DATABASE db_name DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;

CREATE DATABASE 的語法：
CREATE {DATABASE | SCHEMA} [IF NOT EXISTS] db_name
[create_specification [, create_specification] ...]
create_specification:
[DEFAULT] CHARACTER SET charset_name
| [DEFAULT] COLLATE collation_name

更改數據庫的字符編碼
ALTER DATABASE db_name DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci