mysql> desc INFORMATION_SCHEMA.USER_PRIVILEGES;
+----------------+--------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+----------------+--------------+------+-----+---------+-------+
| GRANTEE | varchar(81) | NO | | | |
| TABLE_CATALOG | varchar(512) | YES | | NULL | |
| PRIVILEGE_TYPE | varchar(64) | NO | | | |
| IS_GRANTABLE | varchar(3) | NO | | | |
+----------------+--------------+------+-----+---------+-------+
4 rows in set (0.02 sec)