从补丁 198 开始，Amazon Redshift 将不再支持创建新的 Python UDF。现有的 Python UDF 将继续正常运行至 2026 年 6 月 30 日。有关更多信息，请参阅[博客文章](https://aws.amazon.com/blogs/big-data/amazon-redshift-python-user-defined-functions-will-reach-end-of-support-after-june-30-2026/)。

# SVV\$1RLS\$1POLICY
<a name="r_SVV_RLS_POLICY"></a>

使用 SVV\$1RLS\$1POLICY 以查看在 Amazon Redshift 集群上创建的所有行级别安全性策略的列表。

SVV\$1RLS\$1POLICY 对所有用户可见。超级用户可以查看所有行；普通用户只能查看其自己的数据。有关更多信息，请参阅 [系统表和视图中的数据可见性](cm_chap_system-tables.md#c_visibility-of-data)。

## 表列
<a name="r_SVV_RLS_POLICY-table-columns"></a>

[\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/zh_cn/redshift/latest/dg/r_SVV_RLS_POLICY.html)

## 示例查询
<a name="r_SVV_RLS_POLICY-sample-query"></a>

以下示例显示了 SVV\$1RLS\$1POLICY 的结果。

```
-- Create some policies.
CREATE RLS POLICY pol1 WITH (a int) AS t USING ( t.a IS NOT NULL );
CREATE RLS POLICY pol2 WITH (c varchar(10)) AS t USING ( c LIKE '%public%');

-- Inspect the policy in SVV_RLS_POLICY
SELECT * FROM svv_rls_policy;

 poldb | polname | polalias |                     polatts                      |                polqual                | polenabled | polmodifiedby |   polmodifiedtime   
-------+---------+----------+--------------------------------------------------+---------------------------------------+------------+---------------+---------------------
 my_db | pol1    | t        | [{"colname":"a","type":"integer"}]               | "t"."a" IS NOT NULL                   | t          | policy_admin  | 2022-02-11 14:40:49
 my_db | pol2    | t        | [{"colname":"c","type":"character varying(10)"}] | "t"."c" LIKE CAST('%public%' AS TEXT) | t          | policy_admin  | 2022-02-11 14:41:28
```