# DROP VIEW

DROP VIEW — 移除檢視表

### 語法

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

### 說明

DROP VIEW 移除現有檢視表。要執行此命令，您必須是檢視表的擁有者。

### 參數

`IF EXISTS`

如果檢視表不存在，請不要拋出錯誤。在這種情況下發出 NOTICE。

*`name`*

要移除的檢視表名稱（可選擇性加上綱要名稱）。

`CASCADE`

自動移除相依於檢視表的物件（例如其他檢視表），以及相依於這些物件的所有物件（參閱[第 5.13 節](/15/the-sql-language/ddl/dependency-tracking.md)）。

`RESTRICT`

如果任何物件相依於它，則拒絕移除檢視表。這是預設行為。

### 範例

此指令將移除名稱為 kinds 的檢視表：

```
DROP VIEW kinds;
```

### 相容性

此命令符合 SQL 標準，但標準僅允許每個指令移除一個檢視表，並且除了 IF EXISTS 選項（PostgreSQL 延伸功能）之外。

### 參閱

[ALTER VIEW](/15/reference/sql-commands/alter-view.md), [CREATE VIEW](/15/reference/sql-commands/create-view.md)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.postgresql.tw/15/reference/sql-commands/drop-view.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.