1 -- 查看系统用户 2 select Host,User,Password from mysql.user; 3 4 -- 创建一个远程用户 5 create user test identified by '123456'; 6 7 -- 分配权限 8 grant all privileges on *.* to 'test'@'%'identified by '123456' with grant option; 9 10 -- 刷新mysql用户权限 11 flush privileges ; 12 13 -- 修改指定用户密码 14 update mysql.user set password=password('新密码') where User="test" and Host="localhost"; 15 16 -- 删除用户 17 delete from user where User='test' and Host='localhost';
-- 查看mysql支持字符集 show variables like "% character %";
-- 建立数据库并指定编码 create database app_relation character set utf8; -- 修改数据库编码 alter database app_relation character set utf8;
CREATE DATABASE db_name DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;
CREATE DATABASE 的语法:
CREATE {DATABASE | SCHEMA} [IF NOT EXISTS] db_name
[create_specification [, create_specification] …]
create_specification:
[DEFAULT] CHARACTER SET charset_name
| [DEFAULT] COLLATE collation_name
更改数据库的字符编码
ALTER DATABASE db_name DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci