MySQL 8.4 Release Notes
ROLE_TABLE_GRANTS 表提供有关当前启用角色可用或已授予的角色的表权限的信息。The ROLE_TABLE_GRANTS table provides
information about the table privileges for roles that are
available to or granted by the currently enabled roles.
ROLE_TABLE_GRANTS 表具有以下列：The ROLE_TABLE_GRANTS table has these
columns:
GRANTOR授予该角色的账户的用户名部分。The user name part of the account that granted the role.
GRANTOR_HOST授予该角色的账户的主机名部分。The host name part of the account that granted the role.
GRANTEE授予角色的账户的用户名部分。The user name part of the account to which the role is granted.
GRANTEE_HOST授予角色的账户的主机名部分。The host name part of the account to which the role is granted.
TABLE_CATALOG角色适用的目录名称。该值始终为
def。The name of the catalog to which the role applies. This value is alwaysdef.TABLE_SCHEMA角色适用的模式（数据库）名称。The name of the schema (database) to which the role applies.
TABLE_NAMETABLE_NAME角色适用的表名。The name of the table to which the role applies.
PRIVILEGE_TYPE授予的权限。值可以是任何可以在表级别授予的权限；请参阅 第 15.7.1.6 节，“GRANT 语句”。每行列出一个权限，因此每个受赠者拥有的列权限都会对应一行。The privilege granted. The value can be any privilege that can be granted at the table level; see Section 15.7.1.6, “GRANT Statement”. Each row lists a single privilege, so there is one row per column privilege held by the grantee.
IS_GRANTABLEYES或NO，取决于该角色是否可以授予其他账户。YESorNO, depending on whether the role is grantable to other accounts.