> 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-dropserver.md).

# DROP SERVER

### DROP SERVER

DROP SERVER — remove a foreign server descriptor

### Synopsis

```

DROP SERVER [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]
```

### Description

`DROP SERVER` removes an existing foreign server descriptor. To execute this command, the current user must be the owner of the server.

### Parameters

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

*`name`* : The name of an existing server.

`CASCADE` : Automatically drop objects that depend on the server (such as user mappings), 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 server if any objects depend on it. This is the default.

### Examples

Drop a server `foo` if it exists:

```

DROP SERVER IF EXISTS foo;
```

### Compatibility

`DROP SERVER` conforms to ISO/IEC 9075-9 (SQL/MED). The `IF EXISTS` clause is a PostgreSQL extension.

### See Also

[CREATE SERVER](/reference/sql-commands/sql-createserver.md), [ALTER SERVER](/reference/sql-commands/sql-alterserver.md)

***

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


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