登 录mysql
mysql -u root -p
创建允许本地 IP访问localhost的Mysql数据库时出错
create user 'lijing'@'localhost' identified by '147258369';
ERROR 1396 (HY000): Operation CREATE USER failed for 'lijing'@'localhost'
出错原因：
Assume the user is there, so drop the user
After deleting the user, there is need to flush the mysql privileges
Now create the user.
以下解决办法：
创建允许本地 IP访问localhost的Mysql数据库：
drop user 'lijing'@'localhost';
flush privileges;（刷新系统权限表）
create user 'lijing'@'localhost' identified by '147258369';
创建允许外网IP访问数据库lijing，本命令包含上面的命令，是所有的IP都可以访问该数据库
create user 'lijing'@'%' identified by '147258369';258369';
创建成功后查询创建的用户是否成功
select host,user,authentication_string from mysql.user;
创建一个新的数据库，并使用show databases命令查看数据库是否创建OK
create database lijingdb DEFAULT CHARSET utf8 COLLATE utf8_general_ci;
