4、普通用户操作
#创建普通用户
CREATE USER 'mysql'@'%' IDENTIFIED BY 'abc@123' PASSWORD EXPIRE NEVER;
CREATE USER 'mysql'@'localhost' IDENTIFIED BY 'abc@123' PASSWORD EXPIRE NEVER;
FLUSH PRIVILEGES;
#删除用户
DROP USER 'mysql'@'localhost';
GRANT all privileges ON db_test.* TO 'mysql'@'%' #授权用户对db_test有所有权限
GRANT SELECT, DELETE ,UPDATE ,INSERT ON db_test.* TO 'mysql'@'localhost'#授权用户对db_test有增删改查权限
REVOKE SELECT ON db_test.* FROM 'mysql'@'%' #撤销用户查询权限
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