-- ***********mysql权限问题****************
-- mysql数据库权限问题:root :拥有所有权限(可以干任何事情)
-- 权限账户,只拥有部分权限(CURD)例如,只能操作某个数据库的某张表
-- 如何修改mysql的用户密码?
-- password: md5加密函数(单向加密)
SELECT PASSWORD('root'); -- *81F5E21E35407D884A6CD4A731AEBFB6AF209E1B
-- mysql数据库,用户配置 : user表
USE mysql;
SELECT * FROM USER;
-- 修改密码
UPDATE USER SET PASSWORD=PASSWORD('123456') WHERE USER='root';
-- 分配权限账户
GRANT SELECT ON day16.employee TO 'eric'@'localhost' IDENTIFIED BY '123456'; --分配读的权限给一个eric
GRANT DELETE ON day16.employee TO 'eric'@'localhost' IDENTIFIED BY '123456';
CREATE USER dbreader IDENTIFIED BY 'test';grant select on tq.* to dbreader@"%" identified by "test";
GRANT SELECT ON *.* TO 'test'@'%' IDENTIFIED BY '12345678'; --%百分号代表所有的ip都能连接服务器