USER_PRIVILEGES
USER_PRIVILEGES
表提供关于全局权限的信息。这些信息来自 mysql.user
系统表:
USE INFORMATION_SCHEMA;
DESC USER_PRIVILEGES;
输出如下:
+----------------+--------------+------+------+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+----------------+--------------+------+------+---------+-------+
| GRANTEE | varchar(81) | YES | | NULL | |
| TABLE_CATALOG | varchar(512) | YES | | NULL | |
| PRIVILEGE_TYPE | varchar(64) | YES | | NULL | |
| IS_GRANTABLE | varchar(3) | YES | | NULL | |
+----------------+--------------+------+------+---------+-------+
4 rows in set (0.00 sec)
查看 USER_PRIVILEGES
表中的信息:
SELECT * FROM USER_PRIVILEGES;
输出如下:
+------------+---------------+-------------------------+--------------+
| GRANTEE | TABLE_CATALOG | PRIVILEGE_TYPE | IS_GRANTABLE |
+------------+---------------+-------------------------+--------------+
| 'root'@'%' | def | SELECT | YES |
| 'root'@'%' | def | INSERT | YES |
| 'root'@'%' | def | UPDATE | YES |
| 'root'@'%' | def | DELETE | YES |
| 'root'@'%' | def | CREATE | YES |
| 'root'@'%' | def | DROP | YES |
| 'root'@'%' | def | PROCESS | YES |
| 'root'@'%' | def | REFERENCES | YES |
| 'root'@'%' | def | ALTER | YES |
| 'root'@'%' | def | SHOW DATABASES | YES |
| 'root'@'%' | def | SUPER | YES |
| 'root'@'%' | def | EXECUTE | YES |
| 'root'@'%' | def | INDEX | YES |
| 'root'@'%' | def | CREATE USER | YES |
| 'root'@'%' | def | CREATE TABLESPACE | YES |
| 'root'@'%' | def | TRIGGER | YES |
| 'root'@'%' | def | CREATE VIEW | YES |
| 'root'@'%' | def | SHOW VIEW | YES |
| 'root'@'%' | def | CREATE ROLE | YES |
| 'root'@'%' | def | DROP ROLE | YES |
| 'root'@'%' | def | CREATE TEMPORARY TABLES | YES |
| 'root'@'%' | def | LOCK TABLES | YES |
| 'root'@'%' | def | CREATE ROUTINE | YES |
| 'root'@'%' | def | ALTER ROUTINE | YES |
| 'root'@'%' | def | EVENT | YES |
| 'root'@'%' | def | RELOAD | YES |
| 'root'@'%' | def | FILE | YES |
| 'root'@'%' | def | REPLICATION CLIENT | YES |
| 'root'@'%' | def | REPLICATION SLAVE | YES |
+------------+---------------+-------------------------+--------------+
29 rows in set (0.00 sec)
USER_PRIVILEGES
表中的字段说明如下:
GRANTEE
:被授权用户的名称,格式为'user_name'@'host_name'
。TABLE_CATALOG
:所属表的目录名称,该值始终为def
。PRIVILEGE_TYPE
:被授予的权限类型,每行只显示一种权限类型。IS_GRANTABLE
:如果你拥有GRANT OPTION
权限,值为YES
;否则,值为NO
。