USER_PRIVILEGES

USER_PRIVILEGES 表提供了关于全局权限的信息。该表的数据根据 mysql.user 系统表生成。

  1. USE information_schema;
  2. DESC user_privileges;
  1. +----------------+--------------+------+------+---------+-------+
  2. | Field          | Type         | Null | Key  | Default | Extra |
  3. +----------------+--------------+------+------+---------+-------+
  4. | GRANTEE        | varchar(81)  | YES  |      | NULL    |       |
  5. | TABLE_CATALOG  | varchar(512) | YES  |      | NULL    |       |
  6. | PRIVILEGE_TYPE | varchar(64)  | YES  |      | NULL    |       |
  7. | IS_GRANTABLE   | varchar(3)   | YES  |      | NULL    |       |
  8. +----------------+--------------+------+------+---------+-------+
  9. 4 rows in set (0.00 sec)
  1. SELECT * FROM user_privileges;
  1. +------------+---------------+-------------------------+--------------+
  2. | GRANTEE    | TABLE_CATALOG | PRIVILEGE_TYPE          | IS_GRANTABLE |
  3. +------------+---------------+-------------------------+--------------+
  4. | 'root'@'%' | def           | Select                  | YES          |
  5. | 'root'@'%' | def           | Insert                  | YES          |
  6. | 'root'@'%' | def           | Update                  | YES          |
  7. | 'root'@'%' | def           | Delete                  | YES          |
  8. | 'root'@'%' | def           | Create                  | YES          |
  9. | 'root'@'%' | def           | Drop                    | YES          |
  10. | 'root'@'%' | def           | Process                 | YES          |
  11. | 'root'@'%' | def           | References              | YES          |
  12. | 'root'@'%' | def           | Alter                   | YES          |
  13. | 'root'@'%' | def           | Show Databases          | YES          |
  14. | 'root'@'%' | def           | Super                   | YES          |
  15. | 'root'@'%' | def           | Execute                 | YES          |
  16. | 'root'@'%' | def           | Index                   | YES          |
  17. | 'root'@'%' | def           | Create User             | YES          |
  18. | 'root'@'%' | def           | Trigger                 | YES          |
  19. | 'root'@'%' | def           | Create View             | YES          |
  20. | 'root'@'%' | def           | Show View               | YES          |
  21. | 'root'@'%' | def           | Create Role             | YES          |
  22. | 'root'@'%' | def           | Drop Role               | YES          |
  23. | 'root'@'%' | def           | CREATE TEMPORARY TABLES | YES          |
  24. | 'root'@'%' | def           | LOCK TABLES             | YES          |
  25. | 'root'@'%' | def           | CREATE ROUTINE          | YES          |
  26. | 'root'@'%' | def           | ALTER ROUTINE           | YES          |
  27. | 'root'@'%' | def           | EVENT                   | YES          |
  28. | 'root'@'%' | def           | SHUTDOWN                | YES          |
  29. | 'root'@'%' | def           | RELOAD                  | YES          |
  30. | 'root'@'%' | def           | FILE                    | YES          |
  31. | 'root'@'%' | def           | CONFIG                  | YES          |
  32. +------------+---------------+-------------------------+--------------+
  33. 28 rows in set (0.00 sec)

USER_PRIVILEGES 表中列的含义如下：

  • GRANTEE：被授权的用户名称，格式为 'user_name'@'host_name'。
  • TABLE_CATALOG：表所属的目录的名称。该值始终为 def。
  • PRIVILEGE_TYPE：被授权的权限类型，每行只列一个权限。
  • IS_GRANTABLE：如果用户有 GRANT OPTION 的权限，则为 YES，否则为 NO。