> For the complete documentation index, see [llms.txt](https://docs.postgresql.tw/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.postgresql.tw/reference/sql-commands/sql-droprule.md).

# DROP RULE

### DROP RULE

DROP RULE — remove a rewrite rule

### Synopsis

```

DROP RULE [ IF EXISTS ] name ON table_name [ CASCADE | RESTRICT ]
```

### Description

`DROP RULE` drops a rewrite rule.

### Parameters

`IF EXISTS` : Do not throw an error if the rule does not exist. A notice is issued in this case.

*`name`* : The name of the rule to drop.

*`table_name`* : The name (optionally schema-qualified) of the table or view that the rule applies to.

`CASCADE` : Automatically drop objects that depend on the rule, and in turn all objects that depend on those objects (see [Section 5.15](/the-sql-language/ddl/ddl-depend.md)).

`RESTRICT` : Refuse to drop the rule if any objects depend on it. This is the default.

### Examples

To drop the rewrite rule `newrule`:

```

DROP RULE newrule ON mytable;
```

### Compatibility

`DROP RULE` is a PostgreSQL language extension, as is the entire query rewrite system.

### See Also

[CREATE RULE](/reference/sql-commands/sql-createrule.md), [ALTER RULE](/reference/sql-commands/sql-alterrule.md)

***

原文：[PostgreSQL 18.6 Documentation](https://www.postgresql.org/docs/18/sql-droprule.html)（英文原文，待翻譯）


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