Postgresql 中文操作指南

DROP FOREIGN TABLE

DROP FOREIGN TABLE - 删除外部表

DROP FOREIGN TABLE — remove a foreign table

Synopsis

DROP FOREIGN TABLE [ IF EXISTS ] name [, ...] [ CASCADE | RESTRICT ]

Description

DROP FOREIGN TABLE 删除一个外部表。只有是外部表的拥有者能够删除它。

DROP FOREIGN TABLE removes a foreign table. Only the owner of a foreign table can remove it.

Parameters

IF EXISTS
- Do not throw an error if the foreign table does not exist. A notice is issued in this case.
name
- The name (optionally schema-qualified) of the foreign table to drop.
CASCADE
- Automatically drop objects that depend on the foreign table (such as views), and in turn all objects that depend on those objects (see Section 5.14).
RESTRICT
- Refuse to drop the foreign table if any objects depend on it. This is the default.

Examples

要销毁两个外部表 films 和 distributors ：

To destroy two foreign tables, films and distributors:

DROP FOREIGN TABLE films, distributors;

Compatibility

此命令符合 ISO/IEC 9075-9 (SQL/MED)，除了标准只允许每个命令删除一个外部表之外，以及 IF EXISTS 选项是一个 PostgreSQL 扩展。

This command conforms to ISO/IEC 9075-9 (SQL/MED), except that the standard only allows one foreign table to be dropped per command, and apart from the IF EXISTS option, which is a PostgreSQL extension.