---
slug: /zh/sql-reference/statements/alter/row-policy
sidebar_position: 47
sidebar_label: 行策略
---

# 操作行策略 {#alter-row-policy-statement}

修改行策略.

语法:

``` sql
ALTER [ROW] POLICY [IF EXISTS] name1 [ON CLUSTER cluster_name1] ON [database1.]table1 [RENAME TO new_name1]
        [, name2 [ON CLUSTER cluster_name2] ON [database2.]table2 [RENAME TO new_name2] ...]
    [AS {PERMISSIVE | RESTRICTIVE}]
    [FOR SELECT]
    [USING {condition | NONE}][,...]
    [TO {role [,...] | ALL | ALL EXCEPT role [,...]}]
```