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修改root密码
在mysql系统外,使用mysqladmin
# mysqladmin -u root -p password "ddddddd"
Enter password: 【输入原来的密码】
#创建数据库
create database student
#授权
grant create,select,insert,update,delete,alter on sitkys.* to sitkys@'%' identified by "sitkys@123456";
#授权(drop 慎重赋予权限)
grant create,select, insert, update, delete,alter,drop on mytest.* to test@'%' identified by "test";
#取消权限
REVOKE ALL ON mytest.* FROM test@'%';
#刷新权限
FLUSH PRIVILEGES;
#显示用户权限
show grants for 'test'@'%';
#删除用户(慎重使用)
DROP USER 'username'@'host';
#查看所有用户权限
SELECT DISTINCT CONCAT('User: ''',user,'''@''',host,''';') AS query FROM mysql.user;