【MySql 账户管理】
You must connect to the MySQL server as the MySQL root user, which has the CREATE USER privilege.
CREATE USER creates a new row in the mysql.user table.
Example 1: Create an account that uses the default authentication plugin and the given password. Mark the password expired so that the user must choose a new one at the first connection to the server:
Example 2: Create an account that uses the sha256_password authentication plugin and the given password. Require that a new password be chosen every 180 days:
Example: This statement creates two accounts, each with the default authentication plugin and named password. For both accounts, connections must be made using a valid X509 certificate and up to 60 queries per hour are permitted. Both accounts are locked initially, so effectively they are placeholders and cannot be used until an administrator unlocks them:
grant 语句示例：
删除用户：
设置密码：
参考：http://dev.mysql.com/doc/refman/5.7/en/account-management-sql.html
原文：http://www.cnblogs.com/tekkaman/p/5165707.html