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mysql 用户权限管理 例子

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Release: 2016-06-07 15:24:58
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USE mysql; SELECT user FROM user; SELECT host,user,password FROM user; CREATE USER testuser IDENTIFIED BY '111111'; RENAME USER testuser TO zhang; DROP USER zhang; SHOW GRANTS FOR zhang; 没有任何权限; GRANT SELECT ON ajax.* TO zhang; #授权

USE mysql;

SELECT user FROM user;

SELECT host,user,password FROM user;

CREATE USER  testuser  IDENTIFIED BY '111111';

RENAME USER  testuser  TO zhang;

DROP USER zhang;

SHOW GRANTS FOR zhang;

mysql 用户权限管理  例子

没有任何权限;


GRANT SELECT ON ajax.* TO zhang; #授权用户zhang,在ajax数据库中的表有SELECT权限

mysql 用户权限管理  例子


撤销权限操作:

REVOKE SELECT ON ajax.* FROM zhang;#撤销用户zhang,在ajax数据库中的表有SELECT权限

撤销的时候,权限必须存在,否则会出错;


GRANT 和 REVOKE 可在几个层次上控制访问权限:

1)整个服务器,使用GRANT ALL 和 REVOKE ALL;

2)整个数据库,使用 ON database.*;

3)特定的表,使用ON database.tablename;

4)特定的列;

50特定的存储过程;


===========================================================

show processlist;#显示所有活动进程,线程Id和执行时间

show variables;#显示当前设置

show status;#显示当前状态


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