Amazon Redshift 自 2025 年 11 月 1 日起不再支援建立新的 Python UDF。如果您想要使用 Python UDF，請在該日期之前建立 UDF。現有 Python UDF 將繼續正常運作。如需詳細資訊，請參閱部落格文章
SHOW GRANTS
顯示使用者、角色或物件的授權。物件可以是資料庫、結構描述、資料表或函式。當您指定物件時 (例如資料表或函式)，您需要使用兩部分或三部分記號來限定該物件。例如 schema_name.table_name 或 database_name.schema_name.table_name。
語法
以下是顯示物件授權的語法。請注意，第二種指定函式的方式僅適用於從資料共用建立的外部結構描述和資料庫。
SHOW GRANTS ON { DATABASE database_name | FUNCTION {database_name.schema_name.function_name | schema_name.function_name } ( [ [ argname ] argtype [, ...] ] ) | FUNCTION {database_name.schema_name.function_name | schema_name.function_name } | SCHEMA {database_name.schema_name | schema_name} | { TABLE {database_name.schema_name.table_name | schema_name.table_name} | table_name } } [FOR {username | ROLE role_name | PUBLIC}] [LIMIT row_limit]
以下是顯示使用者或角色授權的語法。
SHOW GRANTS FOR {username | ROLE role_name} [LIMIT row_limit]
參數
- database_name
-
要顯示其授權的資料庫名稱。
- function_name
-
要顯示其授權的函式名稱。
- schema_name
-
要顯示其授權的結構描述名稱。
- table_name
-
要顯示其授權的資料表名稱。
- FOR username
-
表示顯示使用者的授權。
- FOR ROLE role_name
-
表示顯示角色的授權。
- FOR PUBLIC
-
表示顯示 PUBLIC 的授權。
- row_limit
-
傳回的最大資料列數。row_limit 可以是 0 到 10,000。
範例
下列範例會顯示名為 dev 之資料庫的所有授權。
SHOW GRANTS ON DATABASE dev; database_name | privilege_type | identity_id | identity_name | identity_type | admin_option | privilege_scope ---------------+----------------+-------------+---------------+---------------+--------------+----------------- dev | TRUNCATE | 101 | alice | user | f | TABLES dev | DROP | 101 | alice | user | f | TABLES dev | INSERT | 101 | alice | user | f | TABLES dev | ALTER | 101 | alice | user | f | TABLES dev | TEMP | 0 | public | public | f | DATABASE dev | DELETE | 101 | alice | user | f | TABLES dev | SELECT | 101 | alice | user | f | TABLES dev | UPDATE | 101 | alice | user | f | TABLES dev | REFERENCES | 101 | alice | user | f | TABLES (9 rows)
下列命令會顯示名為 demo 之結構描述的所有授權。
SHOW GRANTS ON SCHEMA demo; schema_name | object_name | object_type | privilege_type | identity_id | identity_name | identity_type | admin_option | privilege_scope -------------+-------------+-------------+----------------+-------------+---------------+---------------+--------------+----------------- demo | demo | SCHEMA | ALTER | 101 | alice | user | f | SCHEMA demo | demo | SCHEMA | DROP | 101 | alice | user | f | SCHEMA demo | demo | SCHEMA | USAGE | 101 | alice | user | f | SCHEMA demo | demo | SCHEMA | CREATE | 101 | alice | user | f | SCHEMA (4 rows)
下列命令會顯示名為 alice 之使用者的所有授權。
SHOW GRANTS FOR alice; database_name | schema_name | object_name | object_type | privilege_type | identity_id | identity_name | identity_type | privilege_scope ---------------+-------------+-------------+-------------+----------------+-------------+---------------+---------------+----------------- dev | | | DATABASE | INSERT | 101 | alice | user | TABLES dev | | | DATABASE | SELECT | 101 | alice | user | TABLES dev | | | DATABASE | UPDATE | 101 | alice | user | TABLES dev | | | DATABASE | DELETE | 101 | alice | user | TABLES dev | | | DATABASE | REFERENCES | 101 | alice | user | TABLES dev | | | DATABASE | DROP | 101 | alice | user | TABLES dev | | | DATABASE | TRUNCATE | 101 | alice | user | TABLES dev | | | DATABASE | ALTER | 101 | alice | user | TABLES dev | public | t1 | TABLE | INSERT | 101 | alice | user | TABLE dev | public | t1 | TABLE | SELECT | 101 | alice | user | TABLE dev | public | t1 | TABLE | UPDATE | 101 | alice | user | TABLE dev | public | t1 | TABLE | DELETE | 101 | alice | user | TABLE dev | public | t1 | TABLE | REFERENCES | 101 | alice | user | TABLE dev | public | t1 | TABLE | DROP | 101 | alice | user | TABLE dev | public | t1 | TABLE | TRUNCATE | 101 | alice | user | TABLE dev | public | t1 | TABLE | ALTER | 101 | alice | user | TABLE dev | demo | | SCHEMA | USAGE | 101 | alice | user | SCHEMA dev | demo | | SCHEMA | CREATE | 101 | alice | user | SCHEMA dev | demo | | SCHEMA | DROP | 101 | alice | user | SCHEMA dev | demo | | SCHEMA | ALTER | 101 | alice | user | SCHEMA (20 rows)
下列命令會顯示名為 alice 之使用者在名為 t3 的資料表上的所有授權。請注意，您可以使用兩部分或三部分記號來指定資料表名稱。
SHOW GRANTS ON TABLE demo_db.demo_schema.t3 FOR alice; schema_name | object_name | object_type | privilege_type | identity_id | identity_name | identity_type | admin_option | privilege_scope -------------+-------------+-------------+----------------+-------------+---------------+---------------+--------------+----------------- demo_schema | t3 | TABLE | ALTER | 100 | alice | user | f | TABLE demo_schema | t3 | TABLE | TRUNCATE | 100 | alice | user | f | TABLE demo_schema | t3 | TABLE | DROP | 100 | alice | user | f | TABLE demo_schema | t3 | TABLE | SELECT | 100 | alice | user | f | TABLE demo_schema | t3 | TABLE | INSERT | 100 | alice | user | f | TABLE demo_schema | t3 | TABLE | UPDATE | 100 | alice | user | f | TABLE demo_schema | t3 | TABLE | DELETE | 100 | alice | user | f | TABLE demo_schema | t3 | TABLE | REFERENCES | 100 | alice | user | f | TABLE (8 rows) SHOW GRANTS ON TABLE demo_schema.t3 FOR alice; schema_name | object_name | object_type | privilege_type | identity_id | identity_name | identity_type | admin_option | privilege_scope -------------+-------------+-------------+----------------+-------------+---------------+---------------+--------------+----------------- demo_schema | t3 | TABLE | ALTER | 100 | alice | user | f | TABLE demo_schema | t3 | TABLE | TRUNCATE | 100 | alice | user | f | TABLE demo_schema | t3 | TABLE | DROP | 100 | alice | user | f | TABLE demo_schema | t3 | TABLE | SELECT | 100 | alice | user | f | TABLE demo_schema | t3 | TABLE | INSERT | 100 | alice | user | f | TABLE demo_schema | t3 | TABLE | UPDATE | 100 | alice | user | f | TABLE demo_schema | t3 | TABLE | DELETE | 100 | alice | user | f | TABLE demo_schema | t3 | TABLE | REFERENCES | 100 | alice | user | f | TABLE (8 rows)
下列範例會顯示名為 t4 之資料表的所有授權。請注意您可以指定資料表名稱的不同方式。
SHOW GRANTS ON t4; schema_name | object_name | object_type | privilege_type | identity_id | identity_name | identity_type | admin_option | privilege_scope -------------+-------------+-------------+----------------+-------------+---------------+---------------+--------------+----------------- public | t4 | TABLE | ALTER | 100 | alice | user | f | TABLE public | t4 | TABLE | TRUNCATE | 100 | alice | user | f | TABLE public | t4 | TABLE | DROP | 100 | alice | user | f | TABLE public | t4 | TABLE | SELECT | 100 | alice | user | f | TABLE public | t4 | TABLE | INSERT | 100 | alice | user | f | TABLE public | t4 | TABLE | UPDATE | 100 | alice | user | f | TABLE public | t4 | TABLE | DELETE | 100 | alice | user | f | TABLE public | t4 | TABLE | REFERENCES | 100 | alice | user | f | TABLE (8 rows) SHOW GRANTS ON TABLE public.t4; schema_name | object_name | object_type | privilege_type | identity_id | identity_name | identity_type | admin_option | privilege_scope -------------+-------------+-------------+----------------+-------------+---------------+---------------+--------------+----------------- public | t4 | TABLE | ALTER | 100 | alice | user | f | TABLE public | t4 | TABLE | TRUNCATE | 100 | alice | user | f | TABLE public | t4 | TABLE | DROP | 100 | alice | user | f | TABLE public | t4 | TABLE | SELECT | 100 | alice | user | f | TABLE public | t4 | TABLE | INSERT | 100 | alice | user | f | TABLE public | t4 | TABLE | UPDATE | 100 | alice | user | f | TABLE public | t4 | TABLE | DELETE | 100 | alice | user | f | TABLE public | t4 | TABLE | REFERENCES | 100 | alice | user | f | TABLE (8 rows)
